Multi protocol/port openvpn

setup.md

Prep conf files

cp server.conf udp.conf
cp udp.conf tcp.conf

Amend udp.conf

proto udp
port 1194
server 10.8.0.0 255.255.255.0
[...]

Amend tcp.conf

proto tcp
port 995
server 10.9.0.0 255.255.255.0
[...]

NAT

iptables -t nat -A POSTROUTING -s 10.9.0.0/24 -j SNAT --to PUBLIC_IP_SERVER
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to PUBLIC_IP_SERVER

TCP 80 > 995 (server)

iptables -t nat -A PREROUTING -p tcp -d PUBLIC_IP_SERVER --dport 80 -j REDIRECT --to-ports 995

UDP 53 > 1194 (serveR)

iptables -t nat -A PREROUTING -p udp -d PUBLIC_IP_SERVER --dport 53 -j REDIRECT --to-ports 1194