31 lines
887 B
Bash
31 lines
887 B
Bash
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#!/bin/bash
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# Function to add port forwarding rule
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add_port_forwarding() {
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local protocol=$1
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local src_port=$2
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local dest_ip=$3
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local dest_port=$4
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# Add the port forwarding rule
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iptables -t nat -A PREROUTING -p tcp --dport $src_port -j DNAT --to-destination $dest_ip:$dest_port
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iptables -t nat -A POSTROUTING -p tcp -d $dest_ip --dport $dest_port -j MASQUERADE
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echo "Port forwarding added: $src_port -> $dest_ip:$dest_port"
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}
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# Function to list port forwarding rules
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list_port_forwarding() {
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echo "Current port forwarding rules:"
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iptables -t nat -L PREROUTING -n -v --line-numbers
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}
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# Main script logic
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if [ "$1" == "add" ] && [ "$2" == "ipv4" ]; then
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add_port_forwarding "tcp" $3 $4 $5
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elif [ "$1" == "list" ]; then
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list_port_forwarding
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else
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echo "Usage: $0 add ipv4 <src_port> <dest_ip> <dest_port>"
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echo " $0 list"
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fi
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