How u do a monitoring traffic?

[iamthed]

guys i wanna know how u do monitoring ??
especially for virus..
how u do a monitoring to stop virus spread from other network?
like IP "123.231.123.2" from port "135" is a virus..
how u know the IP and the port that is a virus??

[Cry Havok]

You've got a range of options, including searching the forum ;)

Try taking a look at snort.  With the appropriate ruleset it may do what you're after, if your system can cope with the load it will create.