full-disclosure - Re: IDS logs showing outgoing packets on port 80

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Message-ID: <e024ccca0711031838y57ec986wd583cbf80e39ae82@mail.gmail.com>
Date: Sat, 3 Nov 2007 21:38:52 -0400
From: "Dude VanWinkle" <dudevanwinkle@...il.com>
To: "Kelly Robinson" <caliana1989@...il.com>
Cc: Full-Disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: IDS logs showing outgoing packets on port 80

On 11/3/07, Kelly Robinson <caliana1989@...il.com> wrote:
>
>
> In our IDS logs, I notice many outgoing packets coming from port 80 (HTTP).
> These packets are coming from client PCs. What may be happening?

If they are replies to an incoming packet, then they are running a web server.

If they are not replies to an incoming packet, they are most likely
infected and trying to evade IDS detection by using a standard port
(80) for C&C

-JP

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