What Is IP Blocking?

IP blocking means that the firewall maintains an IP blacklist. Once a request packet is sent to an address in the blacklist, it is directly discarded. This will cause the source host to fail to respond in time to the target host and cause a timeout. Purpose of blocking access to the target host.

IP blocking is one way of Internet censorship. IP blocking means

This kind of filtering mechanism that uses blacklists for banned websites instead of whitelists for websites that are allowed to access will inevitably have the existence of a fish that misses the net.

Block IP-When a computer or system is under external attack, the administrator can defend the attack by blocking the IP address of the attack source. by

• Netfilter

• iptables

• nftables