Update your Symantec/Norton Security Products

Some serious flaws have been revealed to exist in the following firewall and anti-spam products:

Symantec Norton Internet Security and Professional 2002, 2003, 2004
Symantec Norton Personal Firewall 2002, 2003, 2004
Symantec Norton AntiSpam 2004
Symantec Client Firewall 5.01, 5.1.1
Symantec Client Security 1.0, 1.1, 2.0(SCF 7.1)

The likehood that a worm will be developed to exploit this is high given the populatiry of the Symantec software. The fix is to download and apply the update for your package.
Firewall Updates

Related ATSNN article
Internet Threat

Symantec and Norton are resource hogs....there are much better free versions of firewall and anti virus programs out there.