Software FW resource usage behind router FW

If one is behind a router, all incoming packets are filtered before it ever gets a chance to reach the software firewall. Does this really mean that the software firewall is less taxing on usage like CPU, I/O, RAM, etc vs without a router?

 

Considering some business level routers are running at around 200Mhz, you can see that a firewall should not be using that much CPU.

It also depends on which software firewall you choose, some just suck, some are over bloated and try to do too much, some focus only on the job they should do and do it right, a la Windows Firewall. Probably why most people behind a router will settle for Windows Firewall.

 

if you use utm like astaro or untangle....etc you hardly require any.

Firewall router does 90 % of your job rest is done by your software applacations antivirus/firewall sandbox......etc

if you use utm its does 100% although software put some additional security

to built astaro or untangle all your need is a spare computer converted it to router/utm

http://www.untangle.com/

http://www.astaro.com

http://demo01.astaro.com/

 

As great as UTM is for business, I personally believe it's overkill for the home.