2026-09-25 03:01:45 +00:00
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#!/bin/bash
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2026-09-25 12:36:04 +00:00
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clear
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2026-09-25 03:01:45 +00:00
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iprt=$1
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oprt=$2
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oipa=$3
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2026-09-25 23:24:59 +00:00
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## IPTABLES
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2026-09-25 03:01:45 +00:00
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#echo 1 > /proc/sys/net/ipv4/ip_forward
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#iptables -F
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#iptables -t nat -F
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2026-09-25 11:40:03 +00:00
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#iptables -t nat -A PREROUTING -p tcp --dport $iprt -j DNAT --to-destination $oipa:$oprt
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2026-09-25 03:01:45 +00:00
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#sudo iptables -t nat -A POSTROUTING -j MASQUERADE
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#sudo iptables -t nat -L -n -v
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#sudo iptables-persistent
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2026-09-25 23:24:59 +00:00
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## NFTABLES
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#sudo nft -f /etc/nftables.conf
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#sudo sysctl -w net.ipv4.ip_forward=1
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#sudo sed -i 's/DEFAULT_FORWARD_POLICY="DROP"/DEFAULT_FORWARD_POLICY="ACCEPT"/g' /etc/default/ufw
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#sudo ufw reload
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#sudo nft add table ip nat
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#sudo nft add chain ip nat prerouting { type nat hook prerouting priority -100 \; }
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#sudo nft add chain ip nat postrouting { type nat hook postrouting priority 100 \; }
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2026-09-25 03:01:45 +00:00
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sudo nft add rule ip nat prerouting tcp dport $iprt dnat to $oipa:$oprt
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sudo nft add rule ip nat postrouting ip daddr $oipa masquerade
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2026-09-25 12:01:49 +00:00
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#sudo mkdir /etc/nftables/
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2026-09-26 00:03:35 +00:00
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#sudo ufw status
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2026-09-26 01:37:16 +00:00
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sudo nft list table ip nat #| sudo tee /etc/nftables/port-forwarding.nft
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