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Little init file to set nat redirection with iptables
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#!/bin/sh | |
#network param | |
IP=94.23.251.96 | |
elastic=10.0.0.1 | |
test=10.0.0.2 | |
#nat param 'VMip,source_port,destination_port' | |
rules_nat+=("$elastic,1021,22") | |
rules_nat+=("$elastic,9200,9200") | |
rules_nat+=("$test,1022,22") | |
rules_nat+=("$test,80,80") | |
rules_nat+=("$elastic,81,80") | |
#iptables param | |
chain_name=proxmox | |
function add_chain() | |
{ | |
iptables -t nat -N $chain_name | |
iptables -t nat -A PREROUTING -i vmbr0 -p tcp -j $chain_name | |
} | |
function drop_chain() | |
{ | |
iptables -t nat -D PREROUTING -i vmbr0 -p tcp -j $chain_name | |
iptables -t nat -F $chain_name | |
} | |
function add_nat_rules() | |
{ | |
for rule in ${rules_nat[@]} | |
do | |
A_rule=(${rule//,/ }) | |
ip=${A_rule[0]} | |
source=${A_rule[1]} | |
dest=${A_rule[2]} | |
/sbin/iptables -t nat -A $chain_name -i vmbr0 -p tcp --dport $source -j DNAT --to $ip:$dest | |
done | |
} | |
case "$1" in | |
start) echo "Starting iptables NAT for openvz" | |
#remplacer ip.de.votre_serveur.hote par l'ip de sortie | |
/sbin/iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -o vmbr0 -j SNAT --to $IP | |
drop_chain 2>/dev/null | |
add_chain | |
add_nat_rules | |
;; | |
stop) echo "Stopping iptables NAT for openvz" | |
/sbin/iptables -t nat -D POSTROUTING -s 10.0.0.0/24 -o vmbr0 -j SNAT --to $IP | |
drop_chain | |
;; | |
reload) echo "Reload chain" | |
drop_chain 2>/dev/null | |
add_chain | |
add_nat_rules | |
;; | |
*) echo "Usage: /etc/init.d/$(basename $0) {start|stop|reload}" | |
exit 2 | |
;; | |
esac | |
exit 0 |
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