Discard Forged ICMP Packets and Do Not Record Logs

Setting icmpignoreboguserrorresponses to 1 prevents the kernel from recording responses to duplicate broadcast packets, which prevents useless log information from filling in the file system. Some attackers send ICMP packets that violate RFC-1122 and attempt to fill the log file system with a lar...

CVE-2004-1060

Multiple TCP/IP and ICMP implementations, when using Path MTU PMTU discovery PMTUD, allow remote attackers to cause a denial of service network throughput reduction for TCP connections via forged ICMP "Fragmentation Needed and Don't Fragment was Set" packets with a low next-hop MTU value, aka the...