Block port 25 lan to wan

[Bohlendach]

Hi,

i have some problems with one of my computers and my internetprovider. I am told that I have a computer sending spammails.

I assume the mails are being send though port 25. I have looked at the lan to wan filter, but I do not know how to configure it.

Can anyone help me blocking port 25 on my router (firmware 1.9.2.7-rtn)

[wpte]

That doesn't sound like the proper solution to fix this problem to me:p

Instead you should clean your pc from the spy and malware it has;)
The spammers might very well use a proxy to prevent the firewall rule from doing anything at all...

assuming you have windows?
if you don't have an anti-virus, get the basic (free) microsoft one: http://windows.microsoft.com/da-DK/windows/products/security-essentials
if you have avg... get rid of it, the quality isn't wat is has used to be:p

For spyware I could recommend the free version of super anti spyware: http://superantispyware.com/

if you have a unix system... well you have clamav: http://www.clamav.net/ :p

see if that's able to get rid of that nasty spambot;)