It's a long time ago where I quit using the products Norton offers.
Reason was that their Anti Virus could be remotely crashed and even allowed the remote attacker to bypass the firewall and infect the target system.
That's when I started to look for another solution, since I couldn't allow such a security leak on my game servers .
After all, security is to protect you, not to be the target of the attack.
So I used Zone Alarm together with Avast for a while.
When I then changed to XPx64, I like a lot of other ZA users asked for the 64bit version, which still isn't released.
So again I had to look for a new solution.
Here is where I stumbled over Comodo Firewall (thanks to the guys over at Neowin).
So why do I prefer Comodo over other solutions?
Because it has the best interface when it comes to adjust settings by hand.
And it's easy to look over and find what you want.
Take Bullguard Firewall (because thats the latest I checked out for a project) as example, it might be a good firewall, but adjusting things by hand in it is hell.
Since they don't have the same structure for parting up the OSI layers in the interface.
Comodo has a way more logical way to make this visual.
Another thing I noticed with Comodo compared to other products is the implementation of a service directly on the Windows TCP/IP stack.
Which means that Comodo offers direct layer 3 protection. (I still like to know if Comodo does it's ARP Frame detection at layer 2, since the term "Frame" is used) ^^
So for me Comodo Firewall is a winner compared to what others offer, both free and not free.
I don't know about Comodo Anti Virus, since I still go with Avast on that part.
Oracle: "You're going to have to make a choice. In one hand, you'll have Default Allow... And in the other hand, you'll have Default Deny. One of them is going to die... Which one... Will be up to you..."
According to MS: Deny will always overrule Allow by default.