| Re: Rootkits and Renguard [message #178565 is a reply to message #178549] |
Wed, 09 November 2005 16:46   |
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Blazer
Messages: 3322
Registered: February 2003
Location: Phoenix, AZ
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General (3 Stars)
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| Olaf van der Spek wrote on Wed, 09 November 2005 15:35 |
I didn't say I prefered hardware firewalls. My points is that once a trojan is on your system, it's already too late.
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Not always...if you have a decent firewall like the ones I noted, you can catch them trying to make outbound internet access. There have been cases of trojans though that were coded to specifically disable the users virus scanner and/or firewall as one of their first malicious actions. Fortunately since trojans are by design relatively small, they usually aren't complex enough to know how to disable all of the virus scanners or firewalls one might be using.
Pretty much all one can do is to, along with just using common sense as to what one is downloading and installing, is to have an up to date virus scanner and also a firewall that monitors outgoing connections. Even if you detect a trojan, once it's installed, they can be a real pain to erradicate, or even worse, it may just sit there, being silently blocked by your firewall, but using up your valuable system resources.
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