Forward a port using iptables to a client
reddit / selfhosted

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albertoZurini · 2023-11-09 16:05

I have a Proxmox server with a public IP and I've created a bridge
`vmbr1` for the virtual machines (since I only have one public IP).
I'd like to expose some ports, but I don't know how.

I tried this command with no success: `iptables -t nat -A PREROUTING
-i enp3s0\] -p tcp --sport 10122 --dport 22 -j DNAT --to-destination
[10.0.1.11](https://10.0.1.11)`

I was able to set up the NAT with the following entries on
\`/etc/network/interfaces\`:

```

post-up   echo 1 > /proc/sys/net/ipv4/ip\_forward

post-up   iptables -t nat -A POSTROUTING -s
'[10.0.0.0/8](https://10.0.0.0/8)' -o enp3s0 -j MASQUERADE

post-down iptables -t nat -D POSTROUTING -s
'[10.0.0.0/8](https://10.0.0.0/8)' -o enp3s0 -j MASQUERADE

```

Do you have any recommendation?

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thekrautboy · 2023-11-09 16:10

/r/LinuxQuestions /r/Linux4Noobs /r/HomeNetworking

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selfhosted-ModTeam · 2023-11-09 18:50

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