Messenger pop-ups behind a firewall

[Longhorn]

This morning I had a messenger service pop-up sitting on my screen
advertising some low rate loans. I'm behind a firewall blocking ports
135-139 and 445 (the firewall really blocks those ports - I just checked).
How is that possible?

 

[Jason]

This morning I had a messenger service pop-up sitting on my screen
advertising some low rate loans. I'm behind a firewall blocking ports
135-139 and 445 (the firewall really blocks those ports - I just checked).
How is that possible?

As I recall you need to block several others but I can't recall at this
time what they are.

Jason

 

[cato]

I do not know how to block a port directly without listing all permitted
ports as the only stupid inverse possibility in XP, but good generic advices
from MPVs led to activate XP's built in firewall and stop unwanted services
like Messenger. (This Messenger is a service not the one in the next
paragraph which is MSN Messenger.

An other very good advice in closing ports: Delete MS Messenger, it is
running as msmngs.exe process, if you do not use this very harmful program
to security. Better to get read of it totally. Unfortunately I do not know
how. What I surely know is that after killing the MSN messenger process, all
my important ports revert to stealth state. Run MSN and you will be wide
open to attacks, lol.