table inet x { secmark ssh_server { "system_u:object_r:ssh_server_packet_t:s0" } chain y { type filter hook input priority -225; policy accept; tcp dport 2222 ct state new meta secmark set "ssh_server" ct state new ct secmark set meta secmark ct state established,related meta secmark set ct secmark } chain z { type filter hook output priority 225; policy accept; ct state new ct secmark set meta secmark ct state established,related meta secmark set ct secmark } }