Penetration Testing mailing list archives
Re: bypassing employer's proxy to surf anonymously
From: "" <gimeshell () web de>
Date: Tue, 13 Jun 2006 23:57:16 +0200
On Tue, 13 Jun 2006 10:47:52 +0100 Hubert Seiwert <hubert () westpoint ltd uk> wrote: Hi,
When using SSH through the local proxy, it might be an idea to run the outside sshd on port 443, so it's harder to distinguish from an https server.
Local proxy listens on port 3128, 2121, 1080. I use Putty's proxy option to get ssh tunnel passed through proxy. I have to use proxy to make connection outside at all. If sshd listens on port 22, local proxy's log calls this type of traffic 'HTTPS' eg 'xxx.xxx.xxx.xxx HTTPS'. I guess, using port 443 wouldn't make any difference, because that's really HTTPS port and thus would be correctly remarked 'HTTPS traffic' (dumb proxy server). But i don't know of it, i'll try it out with port 53.
Also, in case you're not aware, a proxy server on the other side (Privoxy in your example) is not really necessary - You can use the ssh -D option (or 'Dynamic' in the PuTTY port forwarding options) to get a SOCKS server on localhost which makes outside connections through the remote sshd.
Thanks for the hint! :)
Another method of tunneling would be through DNS. You say that dns traffic is blocked
References: http://www.doxpara.com/slides/BH_EU_05-Kaminsky.pdf http://dnstunnel.de/
Sounds very interesting, i'll take a look. regards, gimeshell ------------------------------------------------------------------------------ This List Sponsored by: Cenzic Concerned about Web Application Security? Why not go with the #1 solution - Cenzic, the only one to win the Analyst's Choice Award from eWeek. As attacks through web applications continue to rise, you need to proactively protect your applications from hackers. Cenzic has the most comprehensive solutions to meet your application security penetration testing and vulnerability management needs. You have an option to go with a managed service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm). Download FREE whitepaper on how a managed service can help you: http://www.cenzic.com/news_events/wpappsec.php And, now for a limited time we can do a FREE audit for you to confirm your results from other product. Contact us at request () cenzic com for details. ------------------------------------------------------------------------------
Current thread:
- bypassing employer's proxy to surf anonymously (Jun 12)
- Re: bypassing employer's proxy to surf anonymously Hubert Seiwert (Jun 13)
- Re: bypassing employer's proxy to surf anonymously alan (Jun 13)
- Re: bypassing employer's proxy to surf anonymously (Jun 13)
- Re: bypassing employer's proxy to surf anonymously dajackman (Jun 13)
- Re: bypassing employer's proxy to surf anonymously (Jun 14)
- Re: bypassing employer's proxy to surf anonymously Karyn Pichnarczyk (Jun 13)
- Re: bypassing employer's proxy to surf anonymously (Jun 13)
- RE: bypassing employer's proxy to surf anonymously Erin Carroll (Jun 13)
- Re: bypassing employer's proxy to surf anonymously Ivan Arce (Jun 13)
- Re: bypassing employer's proxy to surf anonymously (Jun 13)
- Re: bypassing employer's proxy to surf anonymously Hubert Seiwert (Jun 13)
- Re: bypassing employer s proxy to surf anonymously misiu (Jun 13)
- Re: bypassing employer s proxy to surf anonymously Mario Platt (Jun 13)