Doesn't just about everything tunnel over 443 these days? If you give them 443, 
then can send and receive email via online services, Exchange etc...

Cheers
Ken

From: Oliver Marshall [mailto:[EMAIL PROTECTED]
Sent: Thursday, 2 October 2008 6:23 PM
To: NT System Admin Issues
Subject: Standard Ports

Hi chaps,

We are looking at setting up a DMZ based wifi AP at a remote site where they 
have lots of freelancers coming and going. This would be used for the 
freelancers and would stop them accessing internal resources while allowing 
them external access. There would be another wifi AP for the internal staff to 
use.

I want to also block certain outgoing ports on the DMZ based Wifi AP so that 
traffic use is limited. Essentially I want to limit access to just the basics. 
Now, my 'basics' and someone else's 'basics' are two different things I'm sure. 
I thought I might asked the list whether anyone has looked at the kind of 
traffic internal staff legitimately use/create and what ports other people are 
blocking.

The list so far is;

To Allow:
HTTP (80)
HTTPS (443)
FTP (21)
RDP (3389)
RWW (4415)

To Block (ideally all but at least):
SMTP (25)
IRC (6666 - 6669)

Any others?

Olly

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