iptables -F

root@android:/system/bin # iptables -L -n

iptables -L -n

Chain INPUT (policy ACCEPT)

target     prot opt source               destination

Chain FORWARD (policy ACCEPT)

target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)

target     prot opt source               destination

root@android:/system/bin # iptables -A INPUT -p tcp --sport 80 -s 61.0.0.0/8 -j

DROP
-sport  -s 61.0.0.0/ -j DROP                                               <

protoent* getprotobyname(char const*)() is not implemented on Android

root@android:/system/bin # iptables -L -n

iptables -L -n

Chain INPUT (policy ACCEPT)

target     prot opt source               destination

DROP       tcp  --  61.0.0.0/           0.0.0.0/            tcp spt:

Chain FORWARD (policy ACCEPT)

target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)

target     prot opt source               destination

root@android:/system/bin # iptables -A OUTPUT -p tcp --dport 80 -s 61.0.0.0/8 -j

 DROP
--dport  -s 61.0.0.0/ -j DROP                                              <

protoent* getprotobyname(char const*)() is not implemented on Android

root@android:/system/bin # iptables -L -n

iptables -L -n

Chain INPUT (policy ACCEPT)

target     prot opt source               destination

DROP       tcp  --  61.0.0.0/           0.0.0.0/            tcp spt:

Chain FORWARD (policy ACCEPT)

target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)

target     prot opt source               destination

DROP       tcp  --  61.0.0.0/           0.0.0.0/            tcp dpt:

root@android:/system/bin #