my wireless router has a hardware firewall built in. should i install comodo as well or is the router firewall sufficent on its own
Hi and welcome to the forum!

I have a linksys with NAT and for inbound it's great but if you want to control outbound as well which can be just as big a security hole, keep CFP. I keep both and in my list it would go something like this..
Hardware firewall
Software firewall
I would use both without a doubt. There is a large controversy which is why this is hard to tell someone what to use. This would be , some say they build a false dome over home users in thinking they need to be stealthed. Now I am not the most experienced IT person and mainly into PC repair but know enough that it's getting bad enough that stealth is becoming standard and with good reason as others are trying to exploit every aspect of your pc\connection and I truly believe being stealthed will be the only way to go eventually.
Say if you get a baddie and it's communicating your credit card number>outgoing>the router won't do much good. In this case, CFP would alert you that something is trying to get out and you can control this action. With Router\Nat, you won't have this control.
So in my opinion, I suggest having both. I have used both my Linksys<excellent router and my CFP, <excellent firewall, and feel much safer doing so.
This is my opinion on stealth and why to use both and that I feel safe doing so but others may disagree or agree, there is a whole slew of this on the internet and it will make your eyes roll if you read enough. So, given the info above, do YOU feel safer? This is what matters.
Paul
Hi and welcome to the forum!