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Dear Users,

Please take a look at the latest stunnel-5.08b4 available for download on https://www.stunnel.org/downloads.html

It adds support for SOCKS4 and SOCKS4a protocols. The SOCKS protocol itself is encapsulated within SSL/TLS encryption layer to protect the final destination address. http://www.openssh.com/txt/socks4.protocol http://www.openssh.com/txt/socks4a.protocol

The BIND command of the SOCKS protocol is not supported. The USERID parameter is ignored.

To setup SOCKS4 VPN configure the following client service:

[socks_client] client = yes accept = 127.0.0.1:1080 connect = vpn_server:9080 verify = 4 CAfile = stunnel.pem

The corresponding configuration on the vpn_server host:

[socks_server] protocol = socks accept = 9080 cert = stunnel.pem key = stunnel.key

Now test your configuration on the client machine with:

curl --socks4a localhost http://www.example.com/

Mike