TCP ports used for http with proxy

[marcjone]

Hi all

I am using an RMON probe with Traffic Director for some analysis on our LAN

I have observed some unexpected results when using a proxy server. If a proxy server is used, then I do not see any http traffic coming from my host workstation - all I see is IP traffic. However, if I disable the proxy server setting through my browser then I am able to see http traffic (this is not what I would expect)

I would have thought that my host would communicate with the proxy server on port 80, but this doesn't appear to be the case

Has anyone seen this phenomenon before ?

Many thanks in advance for any help

Marcus

[marcjone]

Sniffed and found that all traffic to the proxy server used port 8080, so the traffic from the proxy to the internet must be using port 80 instead - I should have know this !

Cheers