# ipfwadm -B -l -n -e
IP firewall block rules, default policy: accept
 pkts bytes typ prot opt interface    Source     destination  ports
    3   180 den  tcp -y- 20.2.51.105  0.0.0.0/0  20.2.51.105  * -> *
    0     0 den  tcp -y- 20.2.51.105  0.0.0.0/0  192.168.1.1  * -> *
    0     0 rej  udp --- 20.2.51.105  0.0.0.0/0  192.168.1.1  * -> *
    2   220 acc  udp b-- 0.0.0.0      0.0.0.0/0  20.2.51.105  53 -> *
    0     0 rej  udp --- 20.2.51.105  0.0.0.0/0  20.2.51.105  * -> *