RPZ
Using DNS RPZ to Block Malicious DNS Requests
3 min read
After delivering several presentations at Cisco Live and Cisco Connect this year, I received a few questions regarding DNS Response Policy Zones (RPZ) and how can they be used to block DNS resolution to known malicious hosts and sites. I decided to write this short post to explain what it is and provide several pointers. […]
Error Correction Using Response Policy Zones: Eliminating the Problem of Bitsquatting
3 min read
A memory error is a condition that occurs any time one or more bits being read from memory have changed state from what was previously written. By even the most conservative of estimates Internet devices experience more than 600,000 memory errors per day. Cosmic radiation, operating a device outside its recommended environmental conditions, and defects […]
2