root@OpenWrt:~# iptables -t filter -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            ctstate RELATED,ESTABLISHED 
ACCEPT     all  --  anywhere             anywhere            
syn_flood  tcp  --  anywhere             anywhere            tcp flags:FIN,SYN,RST,ACK/SYN 
input_rule  all  --  anywhere             anywhere            
input      all  --  anywhere             anywhere            

Chain FORWARD (policy DROP)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            ctstate RELATED,ESTABLISHED 
forwarding_rule  all  --  anywhere             anywhere            
forward    all  --  anywhere             anywhere            
reject     all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            ctstate RELATED,ESTABLISHED 
ACCEPT     all  --  anywhere             anywhere            
output_rule  all  --  anywhere             anywhere            
output     all  --  anywhere             anywhere            

Chain forward (1 references)
target     prot opt source               destination         
zone_lan_forward  all  --  anywhere             anywhere            
zone_wan_forward  all  --  anywhere             anywhere            

Chain forwarding_lan (1 references)
target     prot opt source               destination         

Chain forwarding_rule (1 references)
target     prot opt source               destination         

Chain forwarding_wan (1 references)
target     prot opt source               destination         

Chain input (1 references)
target     prot opt source               destination         
zone_lan   all  --  anywhere             anywhere            
zone_wan   all  --  anywhere             anywhere            

Chain input_lan (1 references)
target     prot opt source               destination         

Chain input_rule (1 references)
target     prot opt source               destination         

Chain input_wan (1 references)
target     prot opt source               destination         

Chain output (1 references)
target     prot opt source               destination         
zone_lan_ACCEPT  all  --  anywhere             anywhere            
zone_wan_ACCEPT  all  --  anywhere             anywhere            

Chain output_rule (1 references)
target     prot opt source               destination         

Chain reject (5 references)
target     prot opt source               destination         
REJECT     tcp  --  anywhere             anywhere            reject-with tcp-reset 
REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable 

Chain syn_flood (1 references)
target     prot opt source               destination         
RETURN     tcp  --  anywhere             anywhere            tcp flags:FIN,SYN,RST,ACK/SYN limit: avg 25/sec burst 50 
DROP       all  --  anywhere             anywhere            

Chain zone_lan (1 references)
target     prot opt source               destination         
input_lan  all  --  anywhere             anywhere            
zone_lan_ACCEPT  all  --  anywhere             anywhere            

Chain zone_lan_ACCEPT (2 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            

Chain zone_lan_DROP (0 references)
target     prot opt source               destination         
DROP       all  --  anywhere             anywhere            
DROP       all  --  anywhere             anywhere            

Chain zone_lan_REJECT (1 references)
target     prot opt source               destination         
reject     all  --  anywhere             anywhere            
reject     all  --  anywhere             anywhere            

Chain zone_lan_forward (1 references)
target     prot opt source               destination         
zone_wan_ACCEPT  all  --  anywhere             anywhere            
forwarding_lan  all  --  anywhere             anywhere            
zone_lan_REJECT  all  --  anywhere             anywhere            

Chain zone_wan (1 references)
target     prot opt source               destination         
ACCEPT     udp  --  anywhere             anywhere            udp dpt:bootpc 
ACCEPT     icmp --  anywhere             anywhere            icmp echo-request 
input_wan  all  --  anywhere             anywhere            
zone_wan_REJECT  all  --  anywhere             anywhere            

Chain zone_wan_ACCEPT (2 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            

Chain zone_wan_DROP (0 references)
target     prot opt source               destination         
DROP       all  --  anywhere             anywhere            
DROP       all  --  anywhere             anywhere            

Chain zone_wan_REJECT (2 references)
target     prot opt source               destination         
reject     all  --  anywhere             anywhere            
reject     all  --  anywhere             anywhere            

Chain zone_wan_forward (1 references)
target     prot opt source               destination         
forwarding_wan  all  --  anywhere             anywhere            
zone_wan_REJECT  all  --  anywhere             anywhere