the option in iptables was named “mss clamp”, you can see what it does: linux - How iptables "--clamp-mss-to-pmtu" calculates PMTU? - Super User and TCP MSS Clamping in Firewalld | firewalld
IMO it’s better than lowering the MTU.
the option in iptables was named “mss clamp”, you can see what it does: linux - How iptables "--clamp-mss-to-pmtu" calculates PMTU? - Super User and TCP MSS Clamping in Firewalld | firewalld
IMO it’s better than lowering the MTU.