Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

TCP MSS clamping

TCP MSS clamping is a process where network devices rewrite the MSS value in TCP handshakes.

Figure 1. TCP MSS clamping example diagram. A 24-byte GRE header added to a packet. In this case, TCP MSS should be clamped to 1436.