IE accessing weird port numbers..

[MTXR]

So the other day i got nailed with backdoor.tidserv and trojan.vundo, and a bunch of other ad clicking stuff... i removed all those goodies and no more sign of infection.

so i installed a firewall, and whenever i run internet explorer, its always trying to access the internet by a different port number like 3887 or something in the 3s..

isn't it just supposed to run on port 80? firefox does this too....

are my browsers somehow affected still?

 

[QHalo]

http://www.iana.org/assignments/port-numbers

 

[eagleknight]

Outgoing requests are randomly chosen from 1024-65535. This is to initiate the connection. When the server responds only the incoming port 80. Unless you have a proxy server setup.

http://en.wikipedia.org/wiki/Ephemeral_port

 

[MTXR]

ahh.. thanks for the info