pointers for using CentOS box as filter for children

[rodrigob at suespammers.org (Rodrigo Barbosa)]

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On Tue, Oct 11, 2005 at 11:07:16AM -0700, Steven Vishoot wrote:
> Rob,
> 
> I thought IM uses a specific port and you would be
> able to block that port. I know certain ones like mirc
> uses port 6667 if i am remembering correctly. Anyone
> can correct me if i am totally wrong. 

Steven,
	you are "not exactly correct". Yes, 6667 is usually the port IRC
Servers use, but not always. I have seem plenty of servers using other ports,
including 6668, 6669, 6670, 31337 and even 194.

	That is the same for IM softwares. Not to mention the fact that many
simply use http-based protocols, with port 80.

	Blocking IMs is not as simple as it may seem.

[]s

- -- 
Rodrigo Barbosa <rodrigob@xxxxxxxxxxxxxxx>
"Quid quid Latine dictum sit, altum viditur"
"Be excellent to each other ..." - Bill & Ted (Wyld Stallyns)

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