Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
TCPMSS     tcp  --  anywhere             anywhere            tcp flags:SYN,RST/SYN tcpmss match 1400:1536 TCPMSS clamp to PMTU 
TCPMSS     tcp  --  anywhere             anywhere            tcp flags:SYN,RST/SYN tcpmss match 1400:1536 TCPMSS clamp to PMTU 

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination