According to CERT/CC at Carnegie Mellon University, 80% of security incidents are caused by weak passwords. Extensive...
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lists of default passwords are available online for most routers, and you can be sure that someone, somewhere knows your birthday. SecurityStats.com maintains a thorough do/don't list for passwords, as well as a password strength test.
Fortifying router security
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.