Web authentication with a proxy configured in browser

Unanswered Question
Jun 23rd, 2008


We encounter a problem with web AUthentication fallback in a catalyst 3750.

We configured 802.1x on the 3750. This works great but the pb is with the fallback Webauth. When the client has no proxy configured there is no pb; I mean the client is prompted with the authentication webpage. But if the client has a proxy he doesn't. The client can browse internet throught the proxy but the switch port remain in the INIT state of ip admission and is never prompted:

Authentication Proxy Cache

Total Sessions: 1 Init Sessions: 1

Client IP Port 0, timeout 1, state INIT

So he can't do anything else that browsing internet...

Any idea about how to access the authentication webpage if there is a proxy configured in the browser ?

Thanks for your answer

I have this problem too.
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Jagdeep Gambhir Mon, 06/23/2008 - 06:32

It seems that local authentication for auth-proxy is not supported (not 100% sure. Please provide IOS ver and aaa config for the switch in question.



fbroussey Mon, 06/23/2008 - 11:17

Thanks for your answer.

You'll find attached part of the config with IOS version.

NOte that we work only on port g1/0/3 for now...



ryancolson Sat, 06/28/2008 - 19:08

at least on my 1721 local proxy auth does work, however, I cannot figure out how to configure any more granular control then simple pass/fail


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