Advanced rp_filter: Challenges and Pitfalls in IP Source Address Validation

Explore the intricacies of IP source address validation and Reverse Path Forwarding (RPF) techniques in this 33-minute conference talk from DevConf.CZ 2023. Delve into the IETF's efforts to prevent IP spoofing and mitigate DoS attacks, focusing on the Linux kernel's rp_filter implementations. Gain insights into the challenges and pitfalls of rp_filter beyond asymmetric routing issues. Learn about considerations for implementing RPF in advanced networking scenarios and understand why it's more complex than simply setting a sysctl or loading a generic firewall rule. Speaker Guillaume Nault provides a comprehensive primer on rp_filter, equipping you with valuable knowledge for enhancing network security and performance.