- Incluir no iptables (Bloquear)

iptables -I INPUT -s 192.168.0.??? -j DROP

iptables -I OUTPUT -s 192.168.0.??? -j DROP

iptables -I FORWARD -s 192.168.0.??? -j DROP

- Consultar a linha que a regra se encontra na tabela iptables:

iptables -L INPUT -n --line-numbers |grep 192.168.0.???

iptables -L OUTPUT -n --line-numbers |grep 192.168.0.???

iptables -L FORWARD -n --line-numbers |grep 192.168.0.???

- Excluir do iptables (Desbloquear)

iptables -D INPUT 1

iptables -D OUTPUT 1

iptables -D FORWARD 1