The primary purpose of a ping request is to identify hosts that are currently active. As such, it is often used as part of reconnaissance activity preceding a larger, more coordinated attack. By removing a remote
Note that this does not actually protect you from an attack, but will make you far less likely to become a target.
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.
This was first published in January 2007