Step-by-Step Guide

Change the default password!

According to CERT/CC at Carnegie Mellon University, 80% of security incidents are caused by weak passwords. Extensive lists of default passwords are available online for most routers, and you can be sure that someone, somewhere knows your birthday. SecurityStats.com

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maintains a thorough do/don't list for passwords, as well as a password strength test.


Fortifying router security

 Introduction
 Step 1: Change the default password!
 Step 2: Disable IP directed broadcasts
 Step 3: Disable HTTP configuration for the router, if possible
 Step 4: Block ICMP ping requests
 Step 5: Disable IP source routing
 Step 6: Determine your packet filtering needs
 Step 7: Establish Ingress and Egress address filtering policies
 Step 8: Maintain physical security of the router
 Step 9: Take the time to review the security logs

About the author
Chris Cox is a network administrator for the United States Army, based in Fort Irwin, California.

This tip originally appeared on SearchNetworking.com.

This was first published in January 2007

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