So I've configured my stunnel to only use TLS1.2 and usually works ok. However when client gets some bad L7 response it send a TCP RST, after which all subsequent stunnel TLS Client Hellos are some hybrid of TLS1.0/TLS1.2, as can be seen in tshark output below. Once I restart the whole stunnel process subsequent TLS handshakes work fine using TLS1.2, until the next client RST is received.
$ stunnel -version stunnel 4.56 on x86_64-redhat-linux-gnu platform
$ cat /etc/centos-release CentOS Linux release 7.8.2003 (Core)
$cat /etc/stunnel/dsr2rtcg-stunnel.conf output = /var/log/stunnel pid = /etc/stunnel/stunnel.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1
[poc] cert = /etc/pki/tls/certs/stunnel/aaa.crt key = /etc/pki/tls/private/stunnel/aaa.key CAfile = /etc/pki/tls/certs/stunnel/bbb.crt client = yes sslVersion = TLSv1.2 options = NO_TLSv1 accept = 172.18.180.78:45154 connect = 10.74.0.196:45154 ciphers = TLSv1.2+HIGH:!aNULL
$ tshark -nn -V -d tcp.port==45154,ssl -r 20200729_09:42:44-port45154.pcap -2R "ssl.handshake" -c 1 | grep -i tls -B3 Secure Sockets Layer SSL Record Layer: Handshake Protocol: Client Hello Content Type: Handshake (22) Version: TLS 1.0 (0x0301) -- Handshake Protocol: Client Hello Handshake Type: Client Hello (1) Length: 1610 Version: TLS 1.2 (0x0303)
Howdy,
I've been trying to configure stunnel to provide only TLS 1.2 and 1.3, but no sucess. I have the configuration bellow, what could i be doing wrong?
Thanks in advanced,
sslVersion = all options = NO_SSLv2 options = NO_SSLv3 options = NO_TLSv1 options = NO_TLSv1.1
Check out sslVersionMin = TLSv1.2 in the Stunnel manual.
On 7/29/2020 5:20 PM, Jorge Bastos wrote:
Howdy,
I've been trying to configure stunnel to provide only TLS 1.2 and 1.3, but no sucess. I have the configuration bellow, what could i be doing wrong?
Thanks in advanced,
sslVersion = all options = NO_SSLv2 options = NO_SSLv3 options = NO_TLSv1 options = NO_TLSv1.1
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
P.S.
There's also an sslVersionMax if you feel you need it.
On 7/29/2020 5:20 PM, Jorge Bastos wrote:
Howdy,
I've been trying to configure stunnel to provide only TLS 1.2 and 1.3, but no sucess. I have the configuration bellow, what could i be doing wrong?
Thanks in advanced,
sslVersion = all options = NO_SSLv2 options = NO_SSLv3 options = NO_TLSv1 options = NO_TLSv1.1
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
Howdy,
; Use sslVersionMax or sslVersionMin option instead of disabling specific TLS protocol versions when compiled ; with OpenSSL 1.1.0 or later.
sslVersionMin = TLSv1.2
Produced no efect, openssl is 1.1.1g
any idea?
On 2020-07-30 0:54, Thomas Eifert wrote:
P.S.
There's also an sslVersionMax if you feel you need it.
On 7/29/2020 5:20 PM, Jorge Bastos wrote:
Howdy,
I've been trying to configure stunnel to provide only TLS 1.2 and 1.3, but no sucess. I have the configuration bellow, what could i be doing wrong?
Thanks in advanced,
sslVersion = all options = NO_SSLv2 options = NO_SSLv3 options = NO_TLSv1 options = NO_TLSv1.1
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
-- Attention: This message and all attachments are private and may contain information that is confidential and privileged. If you received this message in error, please notify the sender by reply email and delete the message immediately.
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Hello all,
I currently use the following parameters to achieve exactly the same objective:
sslVersionMin = TLSv1.2
sslVersionMax = TLSv1.3
In fact, here is my full tls.conf file:
; TLS Configuration file
sslVersionMin = TLSv1.2
sslVersionMax = TLSv1.3
ciphersuites = TLS_AES_128_GCM_SHA256:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_256_GCM_SHA384
ciphers = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384
curves = X25519:P-256:X448:P-521:P-384
options = NO_COMPRESSION
options = NO_TICKET
Nothing fancy, and it works as expected. Maybe you are overriding your parameters somewhere else ?
Best regards,
Florian Stosse
Information security engineer
Safran Electronics & Defense | Safran Data Systems | Space & Communication
Phone: +33 1 69 82 79 43 • Mobile : +33 6 48 11 16 12
Safran Data Systems
5, avenue des Andes - CS 90101
91978 Courtaboeuf Cedex, France
www.safran-electronics-defense.com
De : stunnel-users [mailto:[email protected]] De la part de Jorge Bastos Envoyé : jeudi 30 juillet 2020 10:17 À : Thomas Eifert Cc : [email protected] Objet : Re: [stunnel-users] Allowing only TLS 1.2 and 1.3
Howdy,
; Use sslVersionMax or sslVersionMin option instead of disabling specific TLS protocol versions when compiled ; with OpenSSL 1.1.0 or later.
sslVersionMin = TLSv1.2
Produced no efect, openssl is 1.1.1g
any idea?
On 2020-07-30 0:54, Thomas Eifert wrote:
P.S.
There's also an sslVersionMax if you feel you need it.
On 7/29/2020 5:20 PM, Jorge Bastos wrote:
Howdy,
I've been trying to configure stunnel to provide only TLS 1.2 and 1.3, but no sucess. I have the configuration bellow, what could i be doing wrong?
Thanks in advanced,
sslVersion = all options = NO_SSLv2 options = NO_SSLv3 options = NO_TLSv1 options = NO_TLSv1.1
_______________________________________________ stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
Hi,
Thank you, In fact it works. the diagnostic tool i was using has an error, confirmed instead with nmap,
Thanks!
On 2020-07-30 10:32, STOSSE Florian (SAFRAN AEROSYSTEMS) wrote:
Hello all,
I currently use the following parameters to achieve exactly the same objective:
sslVersionMin = TLSv1.2
sslVersionMax = TLSv1.3
In fact, here is my full tls.conf file:
; TLS Configuration file
sslVersionMin = TLSv1.2
sslVersionMax = TLSv1.3
ciphersuites = TLS_AES_128_GCM_SHA256:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_256_GCM_SHA384
ciphers = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384
curves = X25519:P-256:X448:P-521:P-384
options = NO_COMPRESSION
options = NO_TICKET
Nothing fancy, and it works as expected. Maybe you are overriding your parameters somewhere else ?
Best regards,
Florian Stosse
Information security engineer
Safran Electronics & Defense | Safran Data Systems | Space & Communication
Phone: +33 1 69 82 79 43 * Mobile : +33 6 48 11 16 12
Safran Data Systems
5, avenue des Andes - CS 90101
91978 Courtaboeuf Cedex, France
www.safran-electronics-defense.com
De : stunnel-users [mailto:[email protected]] De la part de Jorge Bastos Envoyé : jeudi 30 juillet 2020 10:17 À : Thomas Eifert Cc : [email protected] Objet : Re: [stunnel-users] Allowing only TLS 1.2 and 1.3
Howdy,
; Use sslVersionMax or sslVersionMin option instead of disabling specific TLS protocol versions when compiled ; with OpenSSL 1.1.0 or later.
sslVersionMin = TLSv1.2
Produced no efect, openssl is 1.1.1g
any idea?
On 2020-07-30 0:54, Thomas Eifert wrote:
P.S.
There's also an sslVersionMax if you feel you need it.
On 7/29/2020 5:20 PM, Jorge Bastos wrote:
Howdy,
I've been trying to configure stunnel to provide only TLS 1.2 and 1.3, but no sucess. I have the configuration bellow, what could i be doing wrong?
Thanks in advanced,
sslVersion = all options = NO_SSLv2 options = NO_SSLv3 options = NO_TLSv1 options = NO_TLSv1.1
stunnel-users mailing list
https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
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Howdy,
I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something?
Thanks in advanced,
Hi,
Use
sslVersion = TLSv1.3
in config file.
Am 02.08.20 um 12:38 schrieb Jorge Bastos:
Howdy,
I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something?
Thanks in advanced,
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
Hi,
Thanks, but wont that make it only 1.3? I'd like to have from 1.1 to 1.3
On 2020-08-02 13:18, Olaf Brandt wrote:
Hi,
Use
sslVersion = TLSv1.3
in config file.
Am 02.08.20 um 12:38 schrieb Jorge Bastos:
Howdy,
I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something?
Thanks in advanced,
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
Hi,
Then you could use
sslVersionMin = TLSv1.1 sslVersionMax = TLSv1.3
Am 02.08.20 um 14:43 schrieb Jorge Bastos:
Hi,
Thanks, but wont that make it only 1.3? I'd like to have from 1.1 to 1.3
On 2020-08-02 13:18, Olaf Brandt wrote:
Hi,
Use
sslVersion = TLSv1.3
in config file.
Am 02.08.20 um 12:38 schrieb Jorge Bastos:
Howdy,
I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something?
Thanks in advanced,
stunnel-users mailing list [email protected] mailto:[email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
stunnel-users mailing list [email protected] mailto:[email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
Tried that, but it's not present,
On 2020-08-02 16:45, Olaf Brandt wrote:
Hi,
Then you could use
sslVersionMin = TLSv1.1 sslVersionMax = TLSv1.3 Am 02.08.20 um 14:43 schrieb Jorge Bastos:
Hi,
Thanks, but wont that make it only 1.3? I'd like to have from 1.1 to 1.3
On 2020-08-02 13:18, Olaf Brandt wrote:
Hi,
Use
sslVersion = TLSv1.3
in config file.
Am 02.08.20 um 12:38 schrieb Jorge Bastos:
Howdy,
I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something?
Thanks in advanced,
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
Can you explain your usecase?
What is in the logs?
Am 02.08.20 um 18:03 schrieb Jorge Bastos:
Tried that, but it's not present,
On 2020-08-02 16:45, Olaf Brandt wrote:
Hi,
Then you could use
sslVersionMin = TLSv1.1 sslVersionMax = TLSv1.3
Am 02.08.20 um 14:43 schrieb Jorge Bastos:
Hi,
Thanks, but wont that make it only 1.3? I'd like to have from 1.1 to 1.3
On 2020-08-02 13:18, Olaf Brandt wrote:
Hi, Use sslVersion = TLSv1.3 in config file. Am 02.08.20 um 12:38 schrieb Jorge Bastos: Howdy, I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something? Thanks in advanced, _______________________________________________ stunnel-users mailing list [email protected] <mailto:[email protected]> https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users <https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users> _______________________________________________ stunnel-users mailing list [email protected] <mailto:[email protected]> https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users <https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users>
Jorge, Perhaps you are trying to connect to a server that does not support TLS v1.3... You need to provide more context information for us to help.
Regards, Jose
On Aug 2, 2020, at 11:03 AM, Jorge Bastos [email protected] wrote:
Tried that, but it's not present,
On 2020-08-02 16:45, Olaf Brandt wrote:
Hi,
Then you could use
sslVersionMin = TLSv1.1 sslVersionMax = TLSv1.3
Am 02.08.20 um 14:43 schrieb Jorge Bastos: Hi,
Thanks, but wont that make it only 1.3? I'd like to have from 1.1 to 1.3
On 2020-08-02 13:18, Olaf Brandt wrote:
Hi,
Use
sslVersion = TLSv1.3
in config file.
Am 02.08.20 um 12:38 schrieb Jorge Bastos: Howdy,
I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something?
Thanks in advanced,
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
Jose,
I have the latest libssl/openssl installed, aswell stunnel last ver.
any idea?
On 2020-08-02 19:49, Josealf.rm wrote:
Jorge, Perhaps you are trying to connect to a server that does not support TLS v1.3... You need to provide more context information for us to help.
Regards, Jose On Aug 2, 2020, at 11:03 AM, Jorge Bastos [email protected] wrote:
Tried that, but it's not present,
On 2020-08-02 16:45, Olaf Brandt wrote:
Hi,
Then you could use
sslVersionMin = TLSv1.1 sslVersionMax = TLSv1.3 Am 02.08.20 um 14:43 schrieb Jorge Bastos:
Hi,
Thanks, but wont that make it only 1.3? I'd like to have from 1.1 to 1.3
On 2020-08-02 13:18, Olaf Brandt wrote:
Hi,
Use
sslVersion = TLSv1.3
in config file.
Am 02.08.20 um 12:38 schrieb Jorge Bastos:
Howdy,
I have Stunnel 5.6, and openssl 1.1.1g, and it's not providing TLS 1.3. Is there any parameter that is needed for stunnel to activate it, or am i missing something?
Thanks in advanced,
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
stunnel-users mailing list [email protected] https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
-
Jorge Bastos -
Josealf.rm -
Olaf Brandt -
STOSSE Florian (SAFRAN AEROSYSTEMS) -
Thomas Eifert -
Wojciech Machula