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Fixed firewall (iptables) and added ip6tables for ipv6

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This commit is contained in:
Quentin McGaw
2018-09-21 09:33:37 +02:00
parent 41d7ca9824
commit de981c3566
2 changed files with 22 additions and 11 deletions
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31
entrypoint.sh
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@@ -26,28 +26,39 @@ done
printf "\n * Deleting all iptables rules..."
iptables --flush
iptables --delete-chain
iptables -t nat --flush
iptables -t nat --delete-chain
iptables -P OUTPUT DROP
ip6tables --flush
ip6tables --delete-chain
printf "DONE"
iptables -F OUTPUT
iptables -P OUTPUT DROP
ip6tables -F OUTPUT 2>/dev/null
ip6tables -P OUTPUT DROP 2>/dev/null
printf "\n * Adding rules to accept local loopback traffic..."
iptables -A INPUT -j ACCEPT -i lo
iptables -A OUTPUT -j ACCEPT -o lo
iptables -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT
ip6tables -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT 2>/dev/null
ip6tables -A OUTPUT -o lo -j ACCEPT 2>/dev/null
printf "DONE"
printf "\n * Adding rules to accept traffic of subnet $SUBNET..."
#iptables -A INPUT --src $SUBNET -j ACCEPT -i eth0
iptables -A OUTPUT -d $SUBNET -j ACCEPT -o eth0
iptables -A OUTPUT -d $SUBNET -j ACCEPT
ip6tables -A OUTPUT -d $SUBNET -j ACCEPT 2>/dev/null
printf "DONE"
for ip in $VPNIPS
do
printf "\n * Adding rules to accept traffic with $ip on port $PROTOCOL $PORT..."
iptables -A OUTPUT -j ACCEPT -d $ip -o eth0 -p $PROTOCOL -m $PROTOCOL --dport $PORT
iptables -A INPUT -j ACCEPT -s $ip -i eth0 -p $PROTOCOL -m $PROTOCOL --sport $PORT
ip6tables -A OUTPUT -j ACCEPT -d $ip -o eth0 -p $PROTOCOL -m $PROTOCOL --dport $PORT 2>/dev/null
printf "DONE"
done
printf "\n * Adding rules to accept traffic going through the tun device..."
iptables -A INPUT -j ACCEPT -i tun0
iptables -A OUTPUT -j ACCEPT -o tun0
iptables -A OUTPUT -o tun0 -j ACCEPT
iptables -A OUTPUT -o tap0 -j ACCEPT
ip6tables -A OUTPUT -o tap0 -j ACCEPT 2>/dev/null
ip6tables -A OUTPUT -o tun0 -j ACCEPT 2>/dev/null
printf "DONE"
printf "\n * Allowing outgoing DNS queries on port 53 UDP..."
iptables -A OUTPUT -p udp -m udp --dport 53 -j ACCEPT
ip6tables -A OUTPUT -p udp -m udp --dport 53 -j ACCEPT 2>/dev/null
printf "DONE"
printf "\n * Starting OpenVPN using the following parameters:"
printf "\n * Domain: $PIADOMAIN"