iptables -F
iptables -X
iptables -Z

iptables -P INPUT ACCEPT
iptables -P OUTPUT DROP

iptables -A OUTPUT -p tcp --dport 22 -j ACCEPT
iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
iptables -A OUTPUT -p udp --dport 1194 -j ACCEPT
iptables -A OUTPUT -s 193.167.32.0/24 -j ACCEPT
iptables -A OUTPUT -s 193.167.33.0/24 -j ACCEPT
iptables -A OUTPUT -s 193.167.34.0/24 -j ACCEPT
iptables -A OUTPUT -s 193.167.35.0/24 -j ACCEPT
iptables -A OUTPUT -s 193.167.36.0/24 -j ACCEPT
iptables -A OUTPUT -s 193.167.37.0/24 -j ACCEPT
iptables -A OUTPUT -s 127.0.0.1 -j ACCEPT