security functions of routers?

Can the security functions provided by firewalls also be performed by routers?
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rsivanandanConnect With a Mentor Commented:
To some extent yes.

Read this;

Don JohnstonConnect With a Mentor InstructorCommented:
If it's a basic router (like a Linksys SOHO model), not quite.
If it's an enterprise class Cisco router, more so.
If it's a Cisco router with an IOS that has the firewall feature set then for the most part, yes.

Generally speaking, if you need a firewall, buy a firewall. Otherwise you're pushing the limits of what a router is. Kind of like using a car to haul 4x8 sheets of plywood. You can do it, but it's a pain and it's not pretty.
SysExpertConnect With a Mentor Commented:
In addition, it depends on how complex your needs are on the Firewall.

If they are very simple, then a router can handle it, the more complex, then the more the need for a dedicated firewall.

Planty of free ones under GPL/ Linux.

I hope this helps !

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