- stunnel-users - stunnel.org

Re: stunnel-users Digest, Vol 14, Issue 7
by mxrtmxd72＠att.net 22 Sep '05

22 Sep '05

Thanks Michael. -------------- Original message ---------------------- From: stunnel-users-request(a)mirt.net > Send stunnel-users mailing list submissions to > stunnel-users(a)mirt.net > > To subscribe or unsubscribe via the World Wide Web, visit > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > or, via email, send a message with subject or body 'help' to > stunnel-users-request(a)mirt.net > > You can reach the person managing the list at > stunnel-users-owner(a)mirt.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of stunnel-users digest..." > > > Today's Topics: > > 1. Help Installing Stunnel After Reformat Drive (mxrtmxd72(a)att.net) > 2. Re: Help Installing Stunnel After Reformat Drive (Michal Trojnara) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 21 Sep 2005 20:21:03 +0000 > From: mxrtmxd72(a)att.net > Subject: [stunnel-users] Help Installing Stunnel After Reformat Drive > To: stunnel-users(a)mirt.net (stunnel-users) > Message-ID: > > <092120052021.21511.4331C0AE000BE230000054072160376316CDC90B98039B9D9803(a)att.net > > > > > I have been using Stunnel with Agent versioin 3. My system recently crashed and > I had to re-format the hard drive, reinstall Windows XP, and reinstall my apps. > I have followed the directions at wurd.com/cl_ssl_stunnel.php#Windows. > Fortunately, I had backups of the required files. > > I placed libeay32.dll, libssl32.dll, stunnel-4.10.exe, and stunnel.conf in > C:\Stunnel. > > I placed a shortcut on the desktop which points to C:\Batch\runagent.bat. > > C:\Batch\runagent.bat consists of the following line: > c:\batch\runagent.cmd > > c:\batch\runagent.cmd consists of the following lines: > net start stunnel > "C:\Program Files\Agent\agent.exe" > net stop stunnel > > There is also a desktop shortcut which points to C:\Stunnel\stunnel-4.10.exe. > > When I place a pause command following the net start stunnel line in > runagent.cmd a message appears: The service name is invalid. > > The WURD document seems to imply that it is not necessary to run stunnel-410.exe > -install unless you want Stunnel to run all the time. Am I missing something? > I don't remember exactly how I made this work when I first installed it before > my system crashed. > > Any assistance would be gratefully appreciated. Thanks. > > Mort Middleman > > > > > > > Print. > Move to folder: > > > > ------------------------------ > > Message: 2 > Date: Thu, 22 Sep 2005 10:05:51 +0200 > From: "Michal Trojnara" <Michal.Trojnara(a)mobi-com.net> > Subject: Re: [stunnel-users] Help Installing Stunnel After Reformat > Drive > To: "stunnel-users" <stunnel-users(a)mirt.net> > Message-ID: <001401c5bf4c$823b6f00$df66a8c0@DT1518000186> > Content-Type: text/plain; format=flowed; charset="iso-8859-2"; > reply-type=original > > Mort Middleman <mxrtmxd72(a)att.net> wrote: > > net start stunnel > [cut] > > The WURD document seems to imply that it is not necessary to run > > stunnel-410.exe > > -install unless you want Stunnel to run all the time. Am I missing > > something? > > Yes. You need to install a service in order to start it. 8-) > You can change Startup Type in your Control Panel/Services so stunnel > service is not started automatically. > > BTW: Stunnel 4.12 is going to be released with a Windows installer, so users > won't have to maually copy the dlls. 8-) > You could try a prerelease here: > ftp://ftp.mirt.net/stunnel/stunnel-4.12rc1-installer.exe > > Best regards, > Mike > > > > ------------------------------ > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)mirt.net > http://stunnel.mirt.net/mailman/listinfo/stunnel-users > > > End of stunnel-users Digest, Vol 14, Issue 7 > ********************************************

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Help Installing Stunnel After Reformat Drive
by mxrtmxd72＠att.net 22 Sep '05

22 Sep '05

I have been using Stunnel with Agent versioin 3. My system recently crashed and I had to re-format the hard drive, reinstall Windows XP, and reinstall my apps. I have followed the directions at wurd.com/cl_ssl_stunnel.php#Windows. Fortunately, I had backups of the required files. I placed libeay32.dll, libssl32.dll, stunnel-4.10.exe, and stunnel.conf in C:\Stunnel. I placed a shortcut on the desktop which points to C:\Batch\runagent.bat. C:\Batch\runagent.bat consists of the following line: c:\batch\runagent.cmd c:\batch\runagent.cmd consists of the following lines: net start stunnel "C:\Program Files\Agent\agent.exe" net stop stunnel There is also a desktop shortcut which points to C:\Stunnel\stunnel-4.10.exe. When I place a pause command following the net start stunnel line in runagent.cmd a message appears: The service name is invalid. The WURD document seems to imply that it is not necessary to run stunnel-410.exe -install unless you want Stunnel to run all the time. Am I missing something? I don't remember exactly how I made this work when I first installed it before my system crashed. Any assistance would be gratefully appreciated. Thanks. Mort Middleman Print. Move to folder:

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RE: [stunnel-users] Access to a daemon that has SSL abilities
by Amiram Oren 15 Sep '05

15 Sep '05

10x for the quick reply Alaric! Just want to see if I fully understand your note.. You set the stunnel daemon (/application) on a certain client machine. (let's say you have an IMAP client on it) Then, you configure your Argosoft server, which is set on another machine, to listen to SSL communication (i.e. IMAPS). Is this correct? Cheers, Oren. -----Original Message----- From: Alaric Dailey [mailto:[email protected]] Sent: Wednesday, September 14, 2005 7:44 PM To: Amiram Oren; stunnel-users(a)mirt.net Subject: Re: [stunnel-users] Access to a daemon that has SSL abilities Amiram Oren wrote: > Hi. > > Can I use stunnel only on a client side, in case on the other side, > the server already supports SSL? > > Will this work for SPOP3 and SMTP\S? > > 10X! > > Oren Amiram > >ilman/listinfo/stunnel-users > > I use it on my Argosoft email server to support IMAP, pop3 and HTTP with SSL onWindows 2003 yet :) - ______________________________________________________________________ This email message has been scanned by PineApp Mail-Secure and has been found clean.

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Failed to initialize remote connection
by stunnel-users＠tinfoil.cotse.net 15 Sep '05

15 Sep '05

Hello I am running the Win32 binaries, v4.11, and up to now, they were working fine, as had all the 4.x versions before. But now my http connection will not work; it says "Failed to initialize remote connection". 2005.09.14 22:50:04 LOG3[2500:1492]: Failed to initialize remote connection 2005.09.14 22:50:06 LOG3[2500:1608]: Failed to initialize remote connection Please can anyone advice me what is wrong and how to put this right? Thanks.

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Re: stunnel-4.11 stable?
by Serge Marigold 14 Sep '05

14 Sep '05

FYI, I'm trying to make a case so that my employer will feel some degree of comfort if we deploy it. Is there any other commercial entity that uses this version (4.11) of stunnel. Thanks

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stunnel-4.11 patch for multiple certificates
by Nick Tolomiczenko 14 Sep '05

14 Sep '05

Hi stunnel users, I placed a patch to stunnel-4.11 that will enable it to handle multiple certificates. It is currently awaiting moderator approval. For those who can't wait, please contact myself, Nick Tolomiczenko, or Shem Ali below. Here's the description of what it does: This patch addresses the need for service-level ssl contexts. In particular, the following options which were only available as global options may now be used at the service level: cert, key, CApath, CAfile, ciphers, CRLpath, CRLfile, options, client and verify. If any of these options are used in a service section, stunnel will override its global setting -- if it exists -- and initialize a separate ssl context for the service. On the other hand, for those services that do not specify any of these options, stunnel will fall back on what was specified in the global section of the configuration file and intialize a "common" ssl context for those services. Note: If all services each specified at least one the the above ssl options, then the no "common" ssl context will be initialized since each service will have its own. In this case, it's still a good idea to put common default ssl options in the global section as each service will inherit these settings even if the service initializes its own ssl context. Brought to you by: Nick Tolomiczenko: nick(a)renderquest.com or nick(a)neikos.com Shem Ali: shem(a)renderquest.com

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stunnel-4.11 patch for multiple certificates
by Nick Tolomiczenko 14 Sep '05

14 Sep '05

This patch addresses the need for service-level ssl contexts. In particular, the following options which were only available as global options may now be used at the service level: cert, key, CApath, CAfile, ciphers, CRLpath, CRLfile, options, client and verify. If any of these options are used in a service section, stunnel will override its global setting -- if it exists -- and initialize a separate ssl context for the service. On the other hand, for those services that do not specify any of these options, stunnel will fall back on what was specified in the global section of the configuration file and intialize a "common" ssl context for those services. Note: If all services each specified at least one the the above ssl options, then the no "common" ssl context will be initialized since each service will have its own. In this case, it's still a good idea to put common default ssl options in the global section as each service will inherit these settings even if the service initializes its own ssl context. Brought to you by: Nick Tolomiczenko: nick(a)renderquest.com or nick(a)neikos.com Shem Ali: shem(a)renderquest.com

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Access to a daemon that has SSL abilities
by Amiram Oren 14 Sep '05

14 Sep '05

Hi. Can I use stunnel only on a client side, in case on the other side, the server already supports SSL? Will this work for SPOP3 and SMTP\S? 10X! Oren Amiram

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stunnel-4.11 stable?
by Serge Marigold 13 Sep '05

13 Sep '05

Hi, Is anyone using stunnel-4.11 in a heavily trafficed production environment?

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4.10 stable?
by conover＠rahul.net 09 Sep '05

09 Sep '05

Stunnel 4.10 has gzip compression, right? Is it stable? Thanks, John -- John Conover, conover(a)rahul.net, http://www.johncon.com/

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[BUG] Stunnel 4.10 + xinetd : Connection reset by peer
by Eric Piel 02 Sep '05

02 Sep '05

Hello, I've upgraded to stunnel 4.10 yesterday and since this time I can't managed to get stunnel working with xinetd. I try to access a CVS server with ssl encryption. If stunnel is started as stand-alone, it works as before, but when it's started by xinetd all I get is: cvs [update aborted]: reading from server: Connection reset by peer I've attached the connection logs with 4.09 and 4.10 as well as my configuration file (which used to work for more than a year). My xinetd is version 2.3.13 (and I haven't changed it for several months). Please, let me know if I'm overlooking at something or if I can try anything to debug more in depth... Thanks in advance, Eric PS: actually the CVS is accesible from outside, so you might want to try yourself! # Sample stunnel configuration file # Copyright by Michal Trojnara 2002 setuid = root setgid = root # Authentication stuff verify = 2 CAfile = /etc/ssl/stunnel/lifl-cvs.pem # Use it for client mode client = yes #debug = 7 #output = /home/eric/busy/stunnel.log connect = cvs.lifl.fr:2405

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Re: Flyspray task #7 - CRLfile is never refreshed
by Kartik Subbarao 27 Aug '05

27 Aug '05

I wanted to follow up on this. Flyspray did not let me add a comment since the bug is closed, so I'm posting to the mailing list. 1. I tried using CRLpath (and setting up the symbolic link properly to the hashed value), but that had the same behavior as CRLfile. It only reads the actual CRL once. If I update the file on disk, it never re-reads the file. So I don't see how this is a workaround. Am I missing something? 2. As I mentioned in my initial report, it is a significant disruption for existing stunnel processes to be killed. If it were possible just to kill the main daemon without also killing the child processes (i.e. like sshd), that could be a workaround. But currently, killing the main stunnel process also kills all child stunnel processes. I guess I don't understand what else one could do in this situation, apart from having the application properly reread the CRL on a regular basis. (OCSP is not yet available). When you say that "that's how openssl works", are you saying that the API does not allow you to reread/reload the CRL file? That seems rather odd. It seems like there should be some kind of way to refresh the OpenSSL data structures that store the CRL. Any thoughts/suggestions would be appreciated. Thanks, -Kartik Michal.Trojnara(a)mirt.net wrote: > Notice from stunnel > > Michal Trojnara (mtrojnar) has closed the following task. You are > receiving this because you are on the notification list. > > Task #7: CRLfile is never refreshed > The reason for closing is: Not a bug > That's how OpenSSL work. There are two workarounds: > 1. Use CRLpath instead of CRLfile (I recommend it). > 2. Restart stunnel after the CRL file modification. > > You can get more information about this task at the following URL: > http://stunnel.mirt.net/flyspray/index.php?do=details&id=7 > >

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[stunnel patch] updated transparent proxy on linux 2.6 using cttproxy patch
by MAtteo HCE Valsasna 26 Aug '05

26 Aug '05

hello folks, here comes an improved version of the transparent proxy patch, basically solving the previous TODO issues. please try it if you are interested in transparent stunnel. any feedback il welcome. the code is heavly based on the examples distributed along with the cttproxy patch, many thanks to Balzs Scheidler for its great work and to Lennert Buytenhek for the skaidrus example program. this code is (re)distributed under the GPL version 2 MAtteo ---README--- cttproxy patch to stunnel MAtteo HCE Valsasna (matteo dot valsasna at uninsubria dot it) based on example code in cttproxy patch ports stunnel transparent proxy to cttproxy kernel patch allow stunnel server to connect to the application server faking the stunnel client's IP source address. the server sees connections coming from the stunnel client's IP address instead of that of the stunnel server, and thus can apply admission control, bandwidth control, logging policies as if the client connected directly. should work 2.4 and 2.6 kernels and 2.0.x cttproxy patch tested with kernel 2.6.12.5 and cttproxy-2.6.12-2.0.2 patch setup: * application server(s): here run the application(s) you want to access trough stunnel must route all traffic, or at least all traffic for transproxyed connections, trough the stunnel server * stunnel server: must not be the same host as the application server grab recent kernel source patch your kernel source with the appropriate cttproxy patch (from http://www.balabit.com/products/oss/tproxy/) configure kernel with: CONFIG_IP_NF_TPROXY=m CONFIG_IP_NF_MATCH_TPROXY=m CONFIG_IP_NF_TARGET_TPROXY=m make and install kernel reboot and choose patched kernel load tproxy kernel modules # modprobe iptable_tproxy # modprobe ipt_tproxy enable ip forwarding (this must act as a router) # echo 1 > /proc/sys/net/ipv4/ip_forward grab stunnel source and extract it $ tar xzf stunnel-4.11.tar.gz patch it $ patch -p0 < cttproxy.patch configure selecting tproxy support $ ./configure --enable-tproxy make and install $ make # make install run stunnel in server mode with transparent = yes remote = <application server>:<port> in conf file * stunnel client run plain stunnel, client = yes remote = stunnel server * application client may or may not be the same host as the stunnel client connect to stunnel client to talk securely to application server ---PATCH---diff -crb /tmp/stunnel-4.11/configure stunnel-4.11/configure *** /tmp/stunnel-4.11/configure 2005-07-09 23:00:44.000000000 +0200 --- stunnel-4.11/configure 2005-08-25 16:59:57.000000000 +0200 *************** *** 463,469 **** # include <unistd.h> #endif" ! ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar build build_cpu build_vendor build_os host host_cpu host_vendor host_os CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE EGREP LN_S ECHO AR ac_ct_AR RANLIB ac_ct_RANLIB CPP CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL ssldir RANDOM_FILE USE_DH USE_IPv6 LIBOBJS LTLIBOBJS' ac_subst_files='' # Initialize some variables set by options. --- 463,469 ---- # include <unistd.h> #endif" ! ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar build build_cpu build_vendor build_os host host_cpu host_vendor host_os CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CPP LN_S RANLIB ac_ct_RANLIB EGREP ECHO AR ac_ct_AR CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL ssldir RANDOM_FILE USE_DH USE_IPv6 USE_TPROXY LIBOBJS LTLIBOBJS' ac_subst_files='' # Initialize some variables set by options. *************** *** 1037,1042 **** --- 1037,1043 ---- --disable-rsa Disable RSA support --enable-dh Enable DH support --enable-ipv6 Enable IPv6 support + --enable-tproxy Enable linux 2.6 tproxy patch support --disable-libwrap Disable TCP wrappers library support Optional Packages: *************** *** 23166,23171 **** --- 23344,23367 ---- fi; + # use linux 2.[46] tproxy patch + echo "$as_me:$LINENO: checking whether to enable transparent proxyng using linux 2.46 tproxy patch" >&5 + echo $ECHO_N "checking whether to enable transparent proxyng using linux 2.46 tproxy patch... $ECHO_C" >&6 + # Check whether --enable-tproxy or --disable-tproxy was given. + if test "${enable_tproxy+set}" = set; then + enableval="$enable_tproxy" + echo "$as_me:$LINENO: result: yes" >&5 + echo "${ECHO_T}yes" >&6; cat >>confdefs.h <<\_ACEOF + #define USE_TPROXY 1 + _ACEOF + + else + echo "$as_me:$LINENO: result: no" >&5 + echo "${ECHO_T}no" >&6 + + fi; + + # Disable use of libwrap (TCP wrappers) # it should be the last check! echo "$as_me:$LINENO: checking whether to disable TCP wrappers library support" >&5 *************** *** 23987,23992 **** --- 24184,24190 ---- s,@RANDOM_FILE@,$RANDOM_FILE,;t t s,@USE_DH@,$USE_DH,;t t s,@USE_IPv6@,$USE_IPv6,;t t + s,@USE_TPROXY@,$USE_TPROXY,;t t s,@LIBOBJS@,$LIBOBJS,;t t s,@LTLIBOBJS@,$LTLIBOBJS,;t t CEOF diff -crb /tmp/stunnel-4.11/configure.ac stunnel-4.11/configure.ac *** /tmp/stunnel-4.11/configure.ac 2005-07-09 22:58:05.000000000 +0200 --- stunnel-4.11/configure.ac 2005-08-25 16:56:33.000000000 +0200 *************** *** 14,21 **** --- 14,24 ---- if test "$GCC" = "yes" then CFLAGS="$CFLAGS -Wall -Wshadow -Wcast-align -Wpointer-arith" fi + AC_PROG_CPP AC_PROG_INSTALL + AC_PROG_LN_S AC_PROG_MAKE_SET + AC_PROG_RANLIB # Checks for typedefs, structures, and compiler characteristics # AC_C_CONST *************** *** 254,259 **** --- 257,271 ---- ) AC_SUBST(USE_IPv6) + # use linux 2.[46] tproxy patch + AC_MSG_CHECKING([whether to enable transparent proxyng using linux 2.[46] tproxy patch]) + AC_ARG_ENABLE(tproxy, + [ --enable-tproxy Enable linux 2.6 tproxy patch support], + [AC_MSG_RESULT([yes]); AC_DEFINE(USE_TPROXY)], + [AC_MSG_RESULT([no])] + ) + AC_SUBST(USE_TPROXY) + # Disable use of libwrap (TCP wrappers) # it should be the last check! AC_MSG_CHECKING([whether to disable TCP wrappers library support]) diff -crb /tmp/stunnel-4.11/src/client.c stunnel-4.11/src/client.c *** /tmp/stunnel-4.11/src/client.c 2005-07-02 08:55:58.000000000 +0200 --- stunnel-4.11/src/client.c 2005-08-26 16:01:34.000000000 +0200 *************** *** 44,49 **** --- 44,65 ---- #define SHUT_RDWR 2 #endif + #ifdef USE_TPROXY + #define LINUX_NETFILTER + #define LINUX_TPROXY + #define TPROXY_MAJOR_VERSION(x) ((x >> 24) & 0xff) + #define TPROXY_MINOR_VERSION(x) ((x >> 16) & 0xff) + #define TPROXY_PATCH_VERSION(x) (x & 0xffff) + #endif + + /* transparent proxy */ + #ifdef LINUX_NETFILTER + #include <linux/netfilter_ipv4.h> + #endif + #ifdef LINUX_TPROXY + #include <linux/netfilter_ipv4/ip_tproxy.h> + #endif + /* TCP wrapper */ #ifdef USE_LIBWRAP #include <tcpd.h> *************** *** 77,82 **** --- 93,103 ---- static int connect_wait(CLI *, int, int); static void reset(int, char *); + #ifdef USE_TPROXY + static int determine_source_address(struct sockaddr_in *destination, + struct sockaddr_in *source); + #endif + int max_clients; #ifndef USE_WIN32 int max_fds; *************** *** 921,926 **** --- 942,954 ---- int s; /* destination socket */ u16 i; + // struct in_addr *local=NULL; + #ifdef USE_TPROXY + int f; + struct in_tproxy itp; + struct sockaddr_in tproxy_sin; + #endif + /* setup address_list */ if(c->opt->option.delayed_lookup) { resolved_list.num=0; *************** *** 945,959 **** if(alloc_fd(s)) return -1; ! if(c->bind_addr.num) { /* explicit local bind or transparent proxy */ memcpy(&bind_addr, &c->bind_addr.addr[0], sizeof(SOCKADDR_UNION)); if(bind(s, &bind_addr.sa, addr_len(bind_addr))<0) { sockerror("bind transparent"); closesocket(s); return -1; } } /* try to connect for the 1st time */ s_ntop(c->connecting_address, &addr); s_log(LOG_DEBUG, "%s connecting %s", --- 973,1066 ---- if(alloc_fd(s)) return -1; ! if(c->bind_addr.num ! #ifdef USE_TPROXY ! /* if we're using the tproxy patch, transparent proxy is ! handled below */ ! && !c->opt->option.transparent ! #endif ! ) { ! /* explicit local bind, not tproxy transparent mode */ ! memcpy(&bind_addr, &c->bind_addr.addr[0], sizeof(SOCKADDR_UNION)); if(bind(s, &bind_addr.sa, addr_len(bind_addr))<0) { sockerror("bind transparent"); closesocket(s); return -1; } + sockerror("local bind succeeded"); } + #ifdef USE_TPROXY + if (c->opt->option.transparent){ + /* transparent proxy support on 2.[46] linux kernels */ + /* added by MAtteo HCE Valsasna (matteo.valsasna(a)uninsubria.it) 20050826 */ + /* requires tproxy kernel patch (http://www.balabit.com/products/oss/tproxy */ + /* based on examples in cttproxy patch */ + /* this patch is released under the GNU General Public Licence, Version 2 */ + + memcpy(&bind_addr, &c->bind_addr.addr[0], sizeof(SOCKADDR_UNION)); + + /* check tproxy version */ + itp.op = TPROXY_VERSION; + itp.v.version = 0x00000000; + + getsockopt(s, SOL_IP, IP_TPROXY, &itp, &f); + s_log(LOG_NOTICE, "TPROXY_VERSION: %d.%d.%d", + TPROXY_MAJOR_VERSION(itp.v.version), + TPROXY_MINOR_VERSION(itp.v.version), + TPROXY_PATCH_VERSION(itp.v.version)); + + /* conservative: accepting only tproxy version 2.0.x */ + if (TPROXY_MAJOR_VERSION(itp.v.version) != 2 || + TPROXY_MINOR_VERSION(itp.v.version) != 0) + { + s_log(LOG_ERR, "unsupported tproxy version: %x (2.0.x required)", itp.v.version); + return -1; + } + + tproxy_sin.sin_family = AF_INET; + if (determine_source_address(&addr.in, &tproxy_sin) < 0){ + sockerror("determine_source_address"); + return -1; + } + + /* do not request a specific source port */ + tproxy_sin.sin_port = htons(0); + + /* bind to local source address */ + /* needed for tproxy magic */ + if (bind(s, (struct sockaddr *) &tproxy_sin, sizeof(tproxy_sin)) == -1) + { + sockerror("bind"); + return -1; + } + s_log(LOG_NOTICE, "bound to local: %s", inet_ntoa(tproxy_sin.sin_addr)); + + /* assign foreign address */ + itp.op = TPROXY_ASSIGN; + itp.v.addr.faddr = bind_addr.in.sin_addr; + itp.v.addr.fport = 0; + + if (setsockopt(s, SOL_IP, IP_TPROXY, &itp, sizeof(itp)) == -1) + { + s_log(LOG_NOTICE, "error assigning foreign address: %s", inet_ntoa(bind_addr.in.sin_addr)); + sockerror("setsockopt(SOL_IP, IP_TPROXY, TPROXY_ASSIGN)"); + return -1; + } + s_log(LOG_NOTICE, "assigned foreign address: %s", inet_ntoa(bind_addr.in.sin_addr)); + + /* set connect flag on socket */ + itp.op = TPROXY_FLAGS; + itp.v.flags = ITP_CONNECT|ITP_ONCE; + if (setsockopt(s, SOL_IP, IP_TPROXY, &itp, sizeof(itp)) == -1) + { + sockerror("setsockopt(SOL_IP, IP_TPROXY, TPROXY_FLAGS)"); + return -1; + } + } + #endif + /* try to connect for the 1st time */ s_ntop(c->connecting_address, &addr); s_log(LOG_DEBUG, "%s connecting %s", *************** *** 1020,1023 **** --- 1127,1175 ---- log_error(LOG_DEBUG, get_last_socket_error(), txt); } + + #ifdef USE_TPROXY + + /* from skaidrus */ + static int determine_source_address(struct sockaddr_in *destination, + struct sockaddr_in *source) + { + struct sockaddr_in addr; + socklen_t addrlen; + char textaddr[32]; + int sock; + + sock = socket(AF_INET, SOCK_DGRAM, 0); + if (sock < 0) { + syslog(LOG_CRIT, "determine_source_address: error " + "%d while creating socket", errno); + abort(); + } + + addr = *destination; + addr.sin_port = htons(80); + if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) { + syslog(LOG_ALERT, "determine_source_address: error %d " + "while looking up route for %d", errno, + inet_aton(textaddr, &(addr.sin_addr))); + close(sock); + return -1; + } + + addrlen = sizeof(*source); + if (getsockname(sock, (struct sockaddr *)source, &addrlen) < 0) { + syslog(LOG_CRIT, "determine_source_address: error %d " + "while retrieving source address", errno); + abort(); + } + source->sin_port = 0; + + close(sock); + + return 0; + } + + #endif + + /* End of client.c */

1 0

RE: stunnel and OpenSSL v0.9.8 - tunneling the UDP. Possible?
by rz1a＠mail.ru 22 Aug '05

22 Aug '05

Hello Michal, Just one thought: - if the stunnel on LAN1 joins a group to receive a multicasted stream does it really depend on DTLS's [in]ability to handle the multicasting? I see it this way - on LAN1 a machine running the (first instance of) stunnel joins a group, i.e. stunnel is told to open a socket with all the relevant socket options. Then, another machine on LAN2 (behind NAT + firewall + internet + firewall + NAT) connects to the first stunnel and tells it's own instance of stunnel to open a socket with all the relevant socket options to emit the (apparently) multicasted stream. Please comment. -- Best regards, Tony

2 2

[stunnel patch] transparent proxy on linux 2.6 using cttproxy patch
by MAtteo HCE Valsasna 22 Aug '05

22 Aug '05

hi folks: as suggested in http://www.stunnel.org/faq/transparent.html#ToC3, I modified the stunnel code to use the transparent proxy funcionality on 2.6 (and possibly 2.4) linux kernels with the cttproxy patch (http://www.balabit.com/products/oss/tproxy/, I used )cttproxy-2.6.12-2.0.2. on a clean 2.6.12.5 kernel) the patch is higly incomplete, but it works (see TODO). please try it if you are interested in transparent stunnel. any feedback il welcome. MAtteo the code is heavly based on the examples distributed along with the cttproxy patch, many thanks to Balázs Scheidler for its great work and for making it GPL. with this patch, I was able to run a stunnel in server mode with the transparent option, and the application server I connected to saw the IP address of the stunnel client. of course, this code il also redistributed under the GPL. conditions for running stunnel in transparent mode: if you want to try this patch, you MUST modify the hardcoded IP address in client.c to the IP address of the stunnel server (look for DOIT! in the source code). any improvements wellcome. the stunnel server must run a linux kernel patched with the cttproxy patch the stunnel server and the application server cannot be the same host the application server must believe that it has to route all packets of transparently tunneled connections via the stunnel server. thus the two server should be on the same subnet. I was also able to use linux policy routing to avoid modifying the general routing on the application server: transparently tunneled connections are directed to a different IP on the application server, where a policy rule applies a specific routing table to packets with that source address (see at the end of this message). TODO: stunnel must explicitly bind to an *existing* local address (not loopback) before calling setsockopt(SOL_IP, IP_TPROXY, TPROXY_ASSIGN)"). now the address is hardcoded in the patch, it should automatically find a local address to bind to (or get it from the config file) now the code will only run with tproxy patch version 2.0.2 it should be less strict about tproxy version (make it a configurable option in stunnel?). which tproxy version will it run with? auto detect or configure kernel version (2.2 vs 2.4 or 2.6 with cttproxy), or better add it in .configure ----begin patch----- *** /tmp/stunnel-4.11/src/client.c 2005-07-02 08:55:58.000000000 +0200 --- stunnel-4.11/src/client.c 2005-08-22 12:19:57.000000000 +0200 *************** *** 44,49 **** --- 44,60 ---- #define SHUT_RDWR 2 #endif + #define LINUX_NETFILTER + #define LINUX_TPROXY + + /* transparent proxy */ + #ifdef LINUX_NETFILTER + #include <linux/netfilter_ipv4.h> + #endif + #ifdef LINUX_TPROXY + #include <linux/netfilter_ipv4/ip_tproxy.h> + #endif + /* TCP wrapper */ #ifdef USE_LIBWRAP #include <tcpd.h> *************** *** 921,926 **** --- 932,944 ---- int s; /* destination socket */ u16 i; + // struct in_addr *local=NULL; + #ifdef LINUX_TPROXY + int f; + struct in_tproxy itp; + struct sockaddr_in tproxy_sin; + #endif + /* setup address_list */ if(c->opt->option.delayed_lookup) { resolved_list.num=0; *************** *** 945,960 **** if(alloc_fd(s)) return -1; ! if(c->bind_addr.num) { /* explicit local bind or transparent proxy */ ! memcpy(&bind_addr, &c->bind_addr.addr[0], sizeof(SOCKADDR_UNION)); ! if(bind(s, &bind_addr.sa, addr_len(bind_addr))<0) { ! sockerror("bind transparent"); ! closesocket(s); ! return -1; ! } ! } ! ! /* try to connect for the 1st time */ s_ntop(c->connecting_address, &addr); s_log(LOG_DEBUG, "%s connecting %s", c->opt->servname, c->connecting_address); --- 963,1053 ---- if(alloc_fd(s)) return -1; ! if(c->bind_addr.num && !c->opt->option.transparent) { ! /* explicit local bind, not transparent mode */ ! ! memcpy(&bind_addr, &c->bind_addr.addr[0], sizeof(SOCKADDR_UNION)); ! if(bind(s, &bind_addr.sa, addr_len(bind_addr))<0) { ! sockerror("bind transparent"); ! closesocket(s); ! return -1; ! } ! sockerror("local bind succeeded"); ! } ! ! if (c->opt->option.transparent){ ! ! /* transparent proxy support on 2.[46] linux kernels */ ! /* added by MAtteo HCE Valsasna (matteo.valsasna(a)uninsubria.it) 20050822 */ ! /* requires tproxy kernel patch (http://www.balabit.com/products/oss/tproxy */ ! /* based on examples in cttproxy patch */ ! ! /* FIXME: should detect 2.2 kernel or 2.[46] + cttproxy patch and use appropriate code */ ! ! memcpy(&bind_addr, &c->bind_addr.addr[0], sizeof(SOCKADDR_UNION)); ! ! /* check tproxy version */ ! itp.op = TPROXY_VERSION; ! itp.v.version = 0x00000000; ! ! getsockopt(s, SOL_IP, IP_TPROXY, &itp, &f); ! s_log(LOG_NOTICE, "pre getsockopt(s, SOL_IP, IP_TPROXY): %x", itp.v.version); ! ! /* FIXME: should accept a range of tproxy versions - which? */ ! ! if (itp.v.version != 0x02000002) { ! itp.v.version = 0x02000002; ! if (setsockopt(s, SOL_IP, IP_TPROXY, &itp, sizeof(itp)) == -1) ! { ! sockerror("setsockopt(SOL_IP, IP_TPROXY, TPROXY_VERSION)"); ! getsockopt(s, SOL_IP, IP_TPROXY, &itp, &f); ! s_log(LOG_NOTICE, "err getsockopt(s, SOL_IP, IP_TPROXY): %x", itp.v.version); ! return -1; ! } ! } ! else{ ! s_log(LOG_NOTICE, "getsockopt(SOL_IP, IP_TPROXY, TPROXY_VERSION) returned right version"); ! } ! ! /* bind to local address */ ! /* FIXME: must become dynamic */ ! tproxy_sin.sin_family = AF_INET; ! /* DOIT! add a local IP address here */ ! inet_aton("192.168.179.71", &tproxy_sin.sin_addr); ! /* do not request a specific source port */ ! tproxy_sin.sin_port = htons(0); ! ! if (bind(s, (struct sockaddr *) &tproxy_sin, sizeof(tproxy_sin)) == -1) ! { ! sockerror("bind"); ! return -1; ! } ! s_log(LOG_NOTICE, "bound to local: %s", inet_ntoa(tproxy_sin.sin_addr)); ! ! /* assign foreign address */ ! itp.op = TPROXY_ASSIGN; ! itp.v.addr.faddr = bind_addr.in.sin_addr; ! itp.v.addr.fport = 0; ! ! if (setsockopt(s, SOL_IP, IP_TPROXY, &itp, sizeof(itp)) == -1) ! { ! s_log(LOG_NOTICE, "error assigning foreign address: %s", inet_ntoa(bind_addr.in.sin_addr)); ! sockerror("setsockopt(SOL_IP, IP_TPROXY, TPROXY_ASSIGN)"); ! return -1; ! } ! s_log(LOG_NOTICE, "assigned foreign address: %s", inet_ntoa(bind_addr.in.sin_addr)); ! ! /* set connect flag on socket */ ! itp.op = TPROXY_FLAGS; ! itp.v.flags = ITP_CONNECT|ITP_ONCE; ! if (setsockopt(s, SOL_IP, IP_TPROXY, &itp, sizeof(itp)) == -1) ! { ! sockerror("setsockopt(SOL_IP, IP_TPROXY, TPROXY_FLAGS)"); ! return -1; ! } ! } ! ! /* try to connect for the 1st time */ s_ntop(c->connecting_address, &addr); s_log(LOG_DEBUG, "%s connecting %s", c->opt->servname, c->connecting_address); ----end patch----- EXTRAS source routing on the application server intended usage: the application server is a squid proxy with pubblic adresses. its default gw is an HW-based router (not the transparent stunnel server). we want normal traffic (i.e. not handled by transparent stunnel) to continue to use normal routing. only traffic handled by stunnel should be routed back to the stunnel server. a new IP address (10.0.0.1) is added on the application server specifically for this purpose. stunnel server will forward connections to this address, normal clients will use another address. then, only traffic originating from this address needs to be routed back to the stunnel server. the stunnel server has IP 10.0.0.254 (but it can have more, of course) in /etc/iproute2/rt_tables add a line defining a new routing table: 10 inr.tproxy # add a rule to the new routing table ip r a table inr.tproxy default via 10.0.0.254 # create ip policy routing rule: packets with source address = # 10.0.0.1 should be routed according to the inr.tproxy table ip rule add type unicast from 10.0.0.1 table inr.tproxy priority 220 # apply policy routing changes ip route flush cache

1 0

RE: stunnel and OpenSSL v0.9.8 - tunneling the UDP. Possible?
by rz1a＠mail.ru 20 Aug '05

20 Aug '05

Hello Michal, OK. Securing a plain UDP will suffice at first! Are there any plans to use DTLS? Thank you in advance. -- Best regards, Tony

1 0

stunnel and OpenSSL v0.9.8 - tunneling the UDP. Possible?
by rz1a＠mail.ru 19 Aug '05

19 Aug '05

Hello stunnel-users, OpenSSL from v0.9.8 onwards (I'm told) supports a thing called DTLS. On the OpenSSL's list I was told that it's the tool one needs to use for UDP tunneling. Are there any plans to use this OpenSSL's functionality in the stunnel? I need to securely tunnel the UDP traffic, namely multicasted datagramms. -- Best regards, Tony.

2 1

stunnel on windows
by Paul Cottingham 19 Aug '05

19 Aug '05

Folks, I'm in need of some help in setting up stunnel on windows, I get either Error reading certificate file: {path}/stunnel.pem {path}/stunnel.pem: No such process (3) So I am assuming the second error {path}/stunnel.pem: No such process (3) the path statement is correct and therefore something else is not correct but I have no idea where and what Regards Paul

1 0

Stunnel HTTPS Client Issue
by Salar Madadi 19 Aug '05

19 Aug '05

Hello, We are having a problem with our application using STUNNEL and are stuck. I have detailed the issue below with more detailed info about our setup. I am not very familiar with the SSL protocol so I am having trouble identifying the differences between the log samples I posted to determine what the issue may be. Any help would be greatly appreciated. Thanks, Salar Madadi - Latest Developments Inc. Problem Description ************************************ We are using Stunnel to provide an HTTPS client for use with the UPS ShipXML service. Our application is an xBase++ 1.82 service using the XB2.NET library, running on a windows 2003 server. The application opens a connection to stunnel, which then connects to the UPS https server to send and retrieve an xml response with shipping data. UPS made a change to their service last week related to load balancing and our application has not worked since then. When we send an XML document to UPS we receive the exact same XML document back as if it has been bounced instead of the proper response. Our setup was working until they made the change and they have no idea what is going on. Stunnel Version ***************************************** The problem initially happened with stunnel v. 4.05 and openSSL v. 0.9.7c. I have also tried it with stunnel v. 4.11 and openSSL v. 0.9.7f and the same result occurs. Stunnel.conf settings *********************************** #Stunnel server configuration file key=stunnel.pem #up this number to 7 to get full log details #leave it at 3 to just get critical error messages debug=7 output=test.log client=yes verify=0 [psuedo-https] accept = 8080 connect = www.ups.com:443 TIMEOUTclose = 0 Stunnel log samples ************************************** Here are some log samples. The first is a log sample of when it was working. The second is one when it stopped working and the third is from when it was still not working using the latest version of stunnel/openssl. LOG 1 - Working 2005.05.24 23:37:39 LOG7[184:2796]: psuedo-https accepted FD=216 from 127.0.0.1:3349 2005.05.24 23:37:39 LOG7[184:2796]: FD 216 in non-blocking mode 2005.05.24 23:37:39 LOG7[184:2796]: Creating a new thread 2005.05.24 23:37:39 LOG7[184:2796]: New thread created 2005.05.24 23:37:39 LOG7[184:1840]: psuedo-https started 2005.05.24 23:37:39 LOG5[184:1840]: psuedo-https connected from 127.0.0.1:3349 2005.05.24 23:37:39 LOG7[184:1840]: FD 208 in non-blocking mode 2005.05.24 23:37:39 LOG7[184:1840]: psuedo-https connecting 153.2.228.50:443 2005.05.24 23:37:39 LOG7[184:1840]: remote connect #1: EWOULDBLOCK: retrying 2005.05.24 23:37:39 LOG7[184:1840]: waitforsocket: FD=208, DIR=write 2005.05.24 23:37:39 LOG7[184:1840]: waitforsocket: ok 2005.05.24 23:37:39 LOG7[184:1840]: Remote FD=208 initialized 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): before/connect initialization 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 write client hello A 2005.05.24 23:37:39 LOG7[184:1840]: waitforsocket: FD=208, DIR=read 2005.05.24 23:37:39 LOG7[184:1840]: waitforsocket: ok 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 read server hello A 2005.05.24 23:37:39 LOG5[184:1840]: VERIFY IGNORE: depth=1, /C=US/O=RSA Data Security, Inc./OU=Secure Server Certification Authority 2005.05.24 23:37:39 LOG5[184:1840]: VERIFY IGNORE: depth=1, /C=US/O=RSA Data Security, Inc./OU=Secure Server Certification Authority 2005.05.24 23:37:39 LOG5[184:1840]: VERIFY IGNORE: depth=0, /C=US/ST=New Jersey/L=Mahwah/O=United Parcel Service/OU=Internet Systems/CN=www.ups.com 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 read server certificate A 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 read server done A 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 write client key exchange A 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 write change cipher spec A 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 write finished A 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 flush data 2005.05.24 23:37:39 LOG7[184:1840]: waitforsocket: FD=208, DIR=read 2005.05.24 23:37:39 LOG7[184:1840]: waitforsocket: ok 2005.05.24 23:37:39 LOG7[184:1840]: SSL state (connect): SSLv3 read finished A 2005.05.24 23:37:39 LOG7[184:1840]: 3 items in the session cache 2005.05.24 23:37:39 LOG7[184:1840]: 3 client connects (SSL_connect()) 2005.05.24 23:37:39 LOG7[184:1840]: 3 client connects that finished 2005.05.24 23:37:39 LOG7[184:1840]: 0 client renegotiatations requested 2005.05.24 23:37:39 LOG7[184:1840]: 0 server connects (SSL_accept()) 2005.05.24 23:37:39 LOG7[184:1840]: 0 server connects that finished 2005.05.24 23:37:39 LOG7[184:1840]: 0 server renegotiatiations requested 2005.05.24 23:37:39 LOG7[184:1840]: 0 session cache hits 2005.05.24 23:37:39 LOG7[184:1840]: 0 session cache misses 2005.05.24 23:37:39 LOG7[184:1840]: 0 session cache timeouts 2005.05.24 23:37:39 LOG6[184:1840]: Negotiated ciphers: RC4-SHA SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=SHA1 2005.05.24 23:37:40 LOG7[184:1840]: SSL alert (read): warning: close notify 2005.05.24 23:37:40 LOG7[184:1840]: SSL closed on SSL_read 2005.05.24 23:37:40 LOG7[184:1840]: SSL write shutdown (output buffer empty) 2005.05.24 23:37:40 LOG7[184:1840]: Socket write shutdown (output buffer empty) 2005.05.24 23:37:40 LOG7[184:1840]: SSL alert (write): warning: close notify 2005.05.24 23:37:40 LOG6[184:1840]: SSL_shutdown successfully sent close_notify 2005.05.24 23:37:40 LOG7[184:1840]: Socket closed on read 2005.05.24 23:37:40 LOG5[184:1840]: Connection closed: 726 bytes sent to SSL, 648 bytes sent to socket 2005.05.24 23:37:40 LOG7[184:1840]: psuedo-https finished (0 left) LOG 2 - NOT WORKING 2005.08.15 15:46:07 LOG7[2636:3432]: psuedo-https accepted FD=180 from 127.0.0.1:3141 2005.08.15 15:46:07 LOG7[2636:3432]: FD 180 in non-blocking mode 2005.08.15 15:46:07 LOG7[2636:3432]: Creating a new thread 2005.08.15 15:46:07 LOG7[2636:3432]: New thread created 2005.08.15 15:46:07 LOG7[2636:1316]: psuedo-https started 2005.08.15 15:46:07 LOG5[2636:1316]: psuedo-https connected from 127.0.0.1:3141 2005.08.15 15:46:07 LOG7[2636:1316]: FD 172 in non-blocking mode 2005.08.15 15:46:07 LOG7[2636:1316]: psuedo-https connecting 65.171.127.243:443 2005.08.15 15:46:07 LOG7[2636:1316]: remote connect #1: EWOULDBLOCK: retrying 2005.08.15 15:46:07 LOG7[2636:1316]: waitforsocket: FD=172, DIR=write 2005.08.15 15:46:07 LOG7[2636:1316]: waitforsocket: ok 2005.08.15 15:46:07 LOG7[2636:1316]: remote connect #2: EINVAL: ok 2005.08.15 15:46:07 LOG7[2636:1316]: Remote FD=172 initialized 2005.08.15 15:46:07 LOG7[2636:1316]: SSL state (connect): before/connect initialization 2005.08.15 15:46:07 LOG7[2636:1316]: SSL state (connect): SSLv3 write client hello A 2005.08.15 15:46:07 LOG7[2636:1316]: waitforsocket: FD=172, DIR=read 2005.08.15 15:46:12 LOG7[2636:1316]: waitforsocket: ok 2005.08.15 15:46:12 LOG7[2636:1316]: SSL state (connect): SSLv3 read server hello A 2005.08.15 15:46:12 LOG7[2636:1316]: SSL state (connect): SSLv3 read finished A 2005.08.15 15:46:12 LOG7[2636:1316]: SSL state (connect): SSLv3 write change cipher spec A 2005.08.15 15:46:12 LOG7[2636:1316]: SSL state (connect): SSLv3 write finished A 2005.08.15 15:46:12 LOG7[2636:1316]: SSL state (connect): SSLv3 flush data 2005.08.15 15:46:12 LOG7[2636:1316]: 17 items in the session cache 2005.08.15 15:46:12 LOG7[2636:1316]: 230 client connects (SSL_connect()) 2005.08.15 15:46:12 LOG7[2636:1316]: 230 client connects that finished 2005.08.15 15:46:12 LOG7[2636:1316]: 0 client renegotiatations requested 2005.08.15 15:46:12 LOG7[2636:1316]: 0 server connects (SSL_accept()) 2005.08.15 15:46:12 LOG7[2636:1316]: 0 server connects that finished 2005.08.15 15:46:12 LOG7[2636:1316]: 0 server renegotiatiations requested 2005.08.15 15:46:12 LOG7[2636:1316]: 213 session cache hits 2005.08.15 15:46:12 LOG7[2636:1316]: 0 session cache misses 2005.08.15 15:46:12 LOG7[2636:1316]: 0 session cache timeouts 2005.08.15 15:46:12 LOG6[2636:1316]: Negotiated ciphers: AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 2005.08.15 15:46:14 LOG7[2636:1316]: SSL_read returned WANT_: retrying 2005.08.15 15:46:14 LOG7[2636:1316]: SSL_read returned WANT_: retrying 2005.08.15 15:46:14 LOG7[2636:1316]: SSL alert (read): warning: close notify 2005.08.15 15:46:14 LOG7[2636:1316]: SSL closed on SSL_read 2005.08.15 15:46:14 LOG7[2636:1316]: SSL write shutdown (output buffer empty) 2005.08.15 15:46:14 LOG7[2636:1316]: Socket write shutdown (output buffer empty) 2005.08.15 15:46:14 LOG7[2636:1316]: SSL alert (write): warning: close notify 2005.08.15 15:46:14 LOG6[2636:1316]: SSL_shutdown successfully sent close_notify 2005.08.15 15:46:14 LOG5[2636:1316]: Connection closed: 738 bytes sent to SSL, 5754 bytes sent to socket 2005.08.15 15:46:14 LOG7[2636:1316]: psuedo-https finished (0 left) LOG 3 - NOT WORKING WITH LATEST VERSION OF STUNNEL/OPENSSL 2005.08.18 20:45:13 LOG7[2212:3324]: psuedo-https accepted FD=164 from 127.0.0.1:1076 2005.08.18 20:45:13 LOG7[2212:3324]: Creating a new thread 2005.08.18 20:45:13 LOG7[2212:3324]: New thread created 2005.08.18 20:45:13 LOG7[2212:3388]: psuedo-https started 2005.08.18 20:45:13 LOG7[2212:3388]: FD 164 in non-blocking mode 2005.08.18 20:45:13 LOG5[2212:3388]: psuedo-https connected from 127.0.0.1:1076 2005.08.18 20:45:13 LOG7[2212:3388]: FD 188 in non-blocking mode 2005.08.18 20:45:13 LOG7[2212:3388]: psuedo-https connecting 153.2.228.50:443 2005.08.18 20:45:13 LOG7[2212:3388]: connect_wait: waiting 10 seconds 2005.08.18 20:45:13 LOG7[2212:3388]: connect_wait: connected 2005.08.18 20:45:13 LOG7[2212:3388]: Remote FD=188 initialized 2005.08.18 20:45:16 LOG5[2212:3388]: VERIFY IGNORE: depth=1, /C=US/O=RSA Data Security, Inc./OU=Secure Server Certification Authority 2005.08.18 20:45:16 LOG5[2212:3388]: VERIFY IGNORE: depth=1, /C=US/O=RSA Data Security, Inc./OU=Secure Server Certification Authority 2005.08.18 20:45:16 LOG5[2212:3388]: VERIFY IGNORE: depth=0, /C=US/ST=New Jersey/L=Mahwah/O=United Parcel Service/OU=Internet System/OU=Terms of use at www.verisign.com/rpa (c)05/CN=www.ups.com 2005.08.18 20:45:17 LOG6[2212:3388]: SSL connected: new session negotiated 2005.08.18 20:45:17 LOG6[2212:3388]: Negotiated ciphers: RC4-SHA SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=SHA1 2005.08.18 20:45:20 LOG7[2212:3388]: SSL_read returned WANT_READ: retrying 2005.08.18 20:45:20 LOG7[2212:3388]: SSL_read returned WANT_READ: retrying 2005.08.18 20:45:20 LOG7[2212:3388]: SSL closed on SSL_read 2005.08.18 20:45:20 LOG7[2212:3388]: Socket write shutdown 2005.08.18 20:45:20 LOG7[2212:3388]: SSL write shutdown 2005.08.18 20:45:20 LOG6[2212:3388]: SSL_shutdown successfully sent close_notify 2005.08.18 20:45:20 LOG5[2212:3388]: Connection closed: 738 bytes sent to SSL, 8248 bytes sent to socket 2005.08.18 20:45:20 LOG7[2212:3388]: psuedo-https finished (0 left) Output of stunnel.exe -version ************************************* stunnel 4.11 on x86-pc-mingw32-gnu WIN32+IPv6 with OpenSSL 0.9.7f 22 Mar 2005 Global options cert = stunnel.pem ciphers = ALL:!ADH:+RC4:@STRENGTH debug = 5 key = stunnel.pem RNDbytes = 64 RNDoverwrite = yes service = stunnel session = 300 seconds taskbar = yes verify = none Service-level options TIMEOUTbusy = 300 seconds TIMEOUTclose = 60 seconds TIMEOUTconnect = 10 seconds TIMEOUTidle = 43200 seconds 2005.08.18 21:06:04 LOG3[2508:3100]: Server is down

2 1

Win32 Local Privilege Escalation when Stunnel installed as a System service
by Ian 18 Aug '05

18 Aug '05

Hi, There is a trivial to exploit Local Privilege Escalation when stunnel is installed as a system service on windows. Who should I inform of this so a fix can be made? Thanks Ian --

5 4

stunnel Bug Tracking System
by Michal Trojnara 10 Aug '05

10 Aug '05

Dear Users, I've installed a Bug Tracking System for stunnel. You can enter bugs and feature requests here: http://stunnel.mirt.net/flyspray/ Best regards, Mike

1 0

stunnel for postgresql in windows
by babu 10 Aug '05

10 Aug '05

Hi all, I have seen stunnel example for mysql. how to use stunnel for postgresql in windows.. Thanks babu --------------------------------- To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre.

2 2

nonblocking: Operation not supported by this device (19)
by Tuc＠T-B-O-H 09 Aug '05

09 Aug '05

Hi, This morning I stopped using the splash screen on boot on my FreeBSD 4.11 system, using stunnel 4.11 and now when I use stunnel I get: "stunnel[PID]: nonblocking: Operation not supported by device (19)" Why would changing if I use a splash screen or not make this difference?! Thanks, Tuc

1 0

Any examples of Stunnel usage in "enterprise environments"?
by Claus Lund 06 Aug '05

06 Aug '05

Hi everybody, I was just wondering if there are any public examples of widespread Stunnel usage in an enterprise environments? I'm a UNIX admin where I work and we are currently working on trying to find a solution for encrypting all network traffic to and from the UNIX machines (all the clients are using Windows boxes). We are running a variety of services on the boxes including Samba, homegrown services for our 3-tier app, Oracle, DB2 etc... I already have proof of concept setups for every network service that we offer but I think some "real-world examples" would go a long to convince my boss (and the Windows admins) that Stunnel is a viable option for us. Thank you in advance, Claus

2 1

Re: [stunnel-users] Stunnel dumping core
by Andrew Gay 05 Aug '05

05 Aug '05

> Envelope-to: gay@localhost > Delivery-date: Thu, 04 Aug 2005 16:49:55 +0100 Michael Tronjara wrote: > Politeness is required on this list. *plonk* > > Mike Michael, might I suggest your understanding of that word differs from the majority of us on this list. Many times people have written in pointing out problems with stunnel crashing, dumping core, locking up, yet all you can offer is 'never report problems with older versions', 'you have no right to complain', etc etc, and now you have the arrogance to tell us all we have no clue how to report bugs. I get the feeling you are upset because so many of us discover problems with this software. Andrew

4 6