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how to evade a filtered vpn?

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mohsengh
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PostPosted: Wed Nov 11, 2009 9:49 pm    Post subject: how to evade a filtered vpn? Reply with quote

as you might have heard in our country (iran) we have a heavy state led filtering of internet.recently we've noticed that we cant use vpn to evade this filtering anymore.first i would like to know the mechanism of this filtering.do they filter ports 500 or 1723?or protocol 50,51? and second i was wondering if there is anyway to tackle this problem.
thx
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netman4ttm
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PostPosted: Sun Mar 14, 2010 4:45 am    Post subject: Reply with quote

Switch the VPN. PPTP is stuck at port 1723 but OpenVPN can be run through a wide variety of ports.
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eladl
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PostPosted: Thu Mar 25, 2010 10:10 pm    Post subject: Reply with quote

you can get a cheap VPS outside your country and try the following
- configuring SOCKS
or
- configuring SSH tunneling
or
- configuring VPN through PPTP or IPSEC (ESP protocol 50, isakmp UDP 500)
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p.hall
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PostPosted: Tue Apr 20, 2010 8:48 am    Post subject: Reply with quote

OpenVPN is your best bet - you can set it up to use TCP port 443 (HTTPS) and it will go through the firewall. Even if you guys have a transparent proxy configured by your ISP, OpenVPN will still go through, because the content filtering proxy will not be able to see what is inside the HTTPS packets. Finally, you could just setup OpenVPN to use one of the thousands open proxies out there - in this case you will not need to hire a server somewhere outside your country.
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