Application Layer Firewall and Spyware

[Bret]

I have been finding more and more spyware on computers with names like
trojan.something and backdoor.something. We run the latest anti-virus.
This is all Spyware related. Since many small businesses only run a simple
NAT firewall is it possible for someone to compromise the network starting
with spyware? Could they open up enough of a backdoor to install other hack
tools? NAT firewalls operate on the "you asked for it, you got it" method.
Would Stateful Packet Inspection even stop this?

Does the ISA server in SBS 2003 run a full application layer firewall?
Would it stop an inside-out compromise like this? Could someone elaborate?
Thank you!

 

[Mike Bright MSP]

Bret,

Yes ISA Server does run an application layer firewall, please have a look at
the overview:

http://www.microsoft.com/isaserver/evaluation/overview/

Inregards to your question on possible security issues, I always work with
the idea "Where there is potential, there is possibilty".

Regards

Mike Bright MCP, MSP

e:[email protected]