Re: cannot access www via a proxy while in a VPN

On Tue, Oct 21, 2008 at 11:37:50PM +0200, Steve S wrote:
Hi

I'm starting a VPN with the network of my university via vpnc. The VPN itself
seems OK. I can ssh directly into machines at the university and ifconfig
says

[...]
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:139.20.208.209 P-t-P:139.20.208.209 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1412 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
[...]

Now, while in the VPN, to go from my machine to the net (I need a
university IP to access certain services), I need to go over their www
proxy. I entered the proxy in iceweasel, but it's just "Waiting for
www.google.com ...". No connection either with lynx/w3m

HTTP_PROXY="http://www.example.com:80"; w3m www.google.com
-> www.google.com contacted. Waiting for reply...
http_proxy="http://www.example.com:80"; lynx www.google.com
-> HTTP request sent; waiting for response.

I know that it worked with an older system (lenny) and it works now with
Window$, the Cisco VPN client and Firefox 3, so I figure that it's
definitely my current installation. I'm using Gnome, so I also tried
with the (new) NetworkManager deactivated, but to no avail. My machine
is connected to a hardware router, but with no special firewall settings
there. Also, I didn't change the router's config for a long time, so
it's setup is identical to the one I used with my older install.

I'm running testing, 2.6.24-1-486 (Debian 2.6.24-7),
vpnc 0.5.1r334-1 .

I'll appreciate any tips on how to test this setup further.

try telnet to test, for example if the uni's proxy is bla.uni.com:3128
try

telnet bla.uni.com 3128

and then type
GET /

you should get a response back from the proxy which should help

or try

http_proxy=http://bla.uni.com:3128/ wget -v -d google.com

it should show you debugging info






TIA!

best,
steve


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