vpsfree kvm ports

qemu

#!/bin/bash
# used some from advanced script to have multiple ports: use an equal number of guest and host ports
# /etc/libvirt/hooks/qemu
 
# Update the following variables to fit your setup
Guest_name='kvm'
Guest_ipaddr='' //MODIFY
Host_ipaddr='' //MODIFY

Guest_port=( '80' '443' '22'   )
Host_port=(  '80' '443' '2222' )
 
length=$(( ${#Host_port[@]} - 1 ))
if [ "${1}" = "${Guest_name}" ]; then
   if [ "${2}" = "stopped" ] || [ "${2}" = "reconnect" ]; then
       for i in `seq 0 $length`; do
               iptables -t nat -D PREROUTING -d ${Host_ipaddr} -p tcp --dport ${Host_port[$i]} -j DNAT --to ${Guest_ipaddr}:${Guest_port[$i]}
               iptables -D FORWARD -d ${Guest_ipaddr}/32 -p tcp -m state --state NEW -m tcp --dport ${Guest_port[$i]} -j ACCEPT
               iptables -t nat -D PREROUTING -d ${Host_ipaddr} -p udp --dport ${Host_port[$i]} -j DNAT --to ${Guest_ipaddr}:${Guest_port[$i]}
               iptables -D FORWARD -d ${Guest_ipaddr}/32 -p udp -m state --state NEW -m udp --dport ${Guest_port[$i]} -j ACCEPT
       done
   fi
   if [ "${2}" = "start" ] || [ "${2}" = "reconnect" ]; then
       for i in `seq 0 $length`; do
               iptables -t nat -A PREROUTING -d ${Host_ipaddr} -p tcp --dport ${Host_port[$i]} -j DNAT --to ${Guest_ipaddr}:${Guest_port[$i]}
               iptables -I FORWARD -d ${Guest_ipaddr}/32 -p tcp -m state --state NEW -m tcp --dport ${Guest_port[$i]} -j ACCEPT
               iptables -t nat -A PREROUTING -d ${Host_ipaddr} -p udp --dport ${Host_port[$i]} -j DNAT --to ${Guest_ipaddr}:${Guest_port[$i]}
               iptables -I FORWARD -d ${Guest_ipaddr}/32 -p udp -m state --state NEW -m udp --dport ${Guest_port[$i]} -j ACCEPT
       done
   fi
fi