Agree with you neel.


This is my profile intro,hope this gives you a bit of an answer?



NAT Firewall Protection

The firewall protection provided by the Broadband Router is an intrinsic side effect of NAT (Network Address Translation). All users on the LAN share a single external IP address. From the external viewpoint, there is no network, only a single device.
For internal users, the Broadband Router acts as a "transparent proxy server", translating the multiple internal IP addresses into a single external IP address.
For external requests, any attempt to connect to local resources are blocked. The Broadband Router will not "reverse translate" from a global IP address to a local IP address.
This type of "natural" firewall provides an impregnable barrier against malicious attacks

You still need a software firewall against form html code and trojans(the verry new ones who slip through the anti virus)since they aren t stopped by NAT!