Quote:
Originally Posted by iommi
Hi Folks
I am just wondering if anyone know what ports i need to block to stop people using MSN, Yahoo etc on my home network.
Is it even possible??
I am using a netgear WGT624.
What i was planning to do was block the services.
Cheers 
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According to
http://support.microsoft.com/kb/240063, you need to block ports 1863 and 443 on your firewall for MSN. As for Yahoo messenger, well, that isn't affected by port blocking (MSN is specifically designed like it is so it is easy to block), as Yahoo just works on the first available port. You might try installing a software firewall (such as the free Kerio) and blocking access to the Yahoo Messenger EXE file.