Anyone know what ports to Block Hotmail?

[Pilot1]

I need to block Hotmail logins. Anyone know the ports. I found 4309 and 4310 by using my sniffer software, but suspect there is more to this than just 2 ports?


TIA
Keith

 

[d3vNull]

One problem is that Hotmail is a WEB based service, so you would have to block access to these specific websites/IP addresses, not ports...

That said...

Hotmail has a LARGE number of servers, that seem to be everchanging and the MSN Messanger client can use just about any open port for communication to the server (default = messenger.hotmail.com on port 1630 if I recall)...

better bet is to create acceptable use policies that say Hotmail is not permitted to be accessed and XYZ will happen if you are caught... then catch someone and make an example... Technology can fix alot, but security is worthless without good policies

--d3vNull

 

[PcLinuxGuru]

MSN Messenger is easy to block. I blocked access to messenger.msn.com then applied my FAQ:

faq83-3390

 

[segment]

Name: hotmail.com
Addresses: 64.4.33.7, 64.4.32.7

No matter how many servers they have that's all you need to be concerned with blocking via firewall are those addresses. Will do you little if someone decided to use a proxy server. You could try creating some form of listening regex based script to block something on the fly but it would likely be a resource hog.

 

[buraglio]

You can also block it using a squid proxy w/o much effort. Something like Dan's Guardian (content filter) or squidguard may also be useful.

nb


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Nicholas D. Buraglio

http://www.buraglio.com/nick/gpg-pub-key.txt