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Re: [Openvpn-users] Openvpn over a http-proxy


  • Subject: Re: [Openvpn-users] Openvpn over a http-proxy
  • From: "James Yonan" <jim@xxxxxxxxx>
  • Date: Tue, 3 Feb 2004 17:00:33 -0000

Mike,

There is a bug in --http-proxy in 1.5.0 that causes this error when connecting
through certain proxies.

Try 1.6-beta5 -- it should be fixed there.

James

Mike <lord@xxxxxxxxx> said:

> Hi,
> 
> 
> 
> just tried to make a tunnel connection over a http-proxy, but as soon as i 
> 
> start openvpn on the windows client (with the proxy config) i get an error in 
> 
> the log, that the mtu is not ok:
> 
> Mon Feb 02 20:38:37 2004 830: Attempting to establish TCP connection with 
> 
> 10.2.1.15:3128
> 
> Mon Feb 02 20:38:37 2004 831: TCP connection established with 10.2.1.15:3128
> 
> Mon Feb 02 20:38:37 2004 832: Send to HTTP proxy: 'CONNECT 
> 
> shazbot.laoshi.de:80 HTTP/1.0'
> 
> Mon Feb 02 20:38:37 2004 833: HTTP proxy returned: 'HTTP/1.0 200 Connection 
> 
> established'
> 
> Mon Feb 02 20:38:37 2004 834: TCPv4_CLIENT link local: [undef]
> 
> Mon Feb 02 20:38:37 2004 835: TCPv4_CLIENT link remote: 10.2.1.15:3128
> 
> Mon Feb 02 20:38:37 2004 836: WARNING: Bad encapsulated packet length from 
> 
> peer (3338), which must be > 0 and <= 1502 -- please ensure that --tun-mtu or -
> 
> -link-mtu is equal on both peers -- this condition could also indicate a 
> 
> possible active attack on the TCP link -- [Attemping restart...]
> 
> Mon Feb 02 20:38:37 2004 837: Connection reset, restarting [0]
> 
> Mon Feb 02 20:38:37 2004 838: Closing TCP/UDP socket
> 
> Mon Feb 02 20:38:37 2004 839: Closing TUN/TAP device
> 
> 
> 
> config on client:
> 
> proto tcp-client
> 
> tun-mtu 1500
> 
> 
> 
> config on server:
> 
> proto tcp-server
> 
> tun-mtu 1500
> 
> 
> 
> any ideas what could be wrong?
> 
> maybe because of the http-proxy?
> 
> 
> 
> I cant try without the proxy, because the person on the client can only access 
> 
> the internet trough a http proxy :-(
> 
> 
> 
> mike
> 
> 
> 
> 
> 
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