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iptables, nft: add masquerade example (#6979)

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Richard Mörbitz 2021-11-05 00:36:44 +01:00 • committed by GitHub
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4
pages/linux/iptables.md
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@ -19,6 +19,10 @@
`sudo iptables -A {{chain}} -s {{ip}} -p {{protocol}} --dport {{port}} -j {{rule}}`
- Add a NAT rule to translate all traffic from the `192.168.0.0/24` subnet to the host's public IP:
`sudo iptables -t {{nat}} -A {{POSTROUTING}} -s {{192.168.0.0/24}} -j {{MASQUERADE}}`
- Delete chain rule:
`sudo iptables -D {{chain}} {{rule_line_number}}`

4
pages/linux/nft.md
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@ -20,6 +20,10 @@
`sudo nft add rule {{inet}} {{filter}} {{input}} {{tcp}} {{dport \{ telnet, ssh, http, https \} accept}}`
- Add a NAT rule to translate all traffic from the `192.168.0.0/24` subnet to the host's public IP:
`sudo nft add rule {{nat}} {{postrouting}} ip saddr {{192.168.0.0/24}} {{masquerade}}`
- Show rule handles:
`sudo nft --handle --numeric list chain {{family}} {{table}} {{chain}}`