RE: How to tell if a Linux machine is a zombie?
James Stevenson wrote:
>> If I understand the matter correctly, a firewall can protect only
>> against incoming messages, and is useless against spyware which
>> "phones home" or zombie-ware which spews email spam.
> Not totally correct. A firewall is only as good as the traffic that is
> permitted to flow across it. If you want to block something from phoning
> home then yes you can block outbound traffic as well.
Blocking outbound traffic on specific ports is the advisable method.
Wholesale blocking outbound traffic might make it interesting to get