1811 router firewall

[mohammad-yousef]

Dear All,

I have 1811 router with SDM , I wanted to enable the firewall capabilities using SDM to be in the medium level , in order to deny peer to peer and instant messengers.

but I found the medium and high security levels are disabled.

my IOS version is: c2800nm-advsecurityk9-mz.124-3a.bin

thanks..

[#2]

This document demonstrates how to (attempt to) block the most common peer-to-peer (P2P) file sharing programs with the PIX Firewall. If the application cannot effectively be blocked with the PIX, Cisco IOS? Network-Based Application Recognition (NBAR) configurations are included that can be configured on any Cisco router between the source host and the Internet.

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a00801e419a.shtml