I think MSN Messenger will use port 80 if all other port (such as 1863) 
failed. To really block it, there should be application level blocking 
the MSN protocol. But I don't know how to. ;)

Cheers
Raylund

J o h n W o r t h wrote:

> *Hi guys!*
>
> * *
>
> *After trying m0n0 in-house (still really impressed), I am now using 
> 1.11 on a Lex Light mini PC at one of my sites…*
>
> * *
>
> * I have tried a few times to get a rule that blocks MSN Messenger 
> with no success and Google comes up with loads of info and ports/hosts 
> to block but the little bugger still manages to sign in! Does anyone 
> out there have a working rule I could beg/steal/borrow?*
>
> * *
>
> *Many thanks*
>
> * *
>
> *John*
>