Should you block ICMP responses on your server?

The article 'Should I Block ICMP?' discusses key issues related to network security and the Internet Control Message Protocol (ICMP). ICMP plays a crucial role in network communication, as it is responsible for transmitting error messages, confirmations, and diagnostic information. The author points out that while ICMP can be useful, it also poses certain risks, especially in the context of DDoS attacks and network scanning by potential intruders. There are many scenarios where blocking ICMP can enhance network security, but there are also situations where complete blocking is not recommended. Therefore, the author advises that the decision to block ICMP should be well-considered and tailored to the specific needs of the particular network and its users. It's essential to analyze which elements of this technology are necessary for proper network operation and which ones may constitute a risk.