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add firewall rules

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ed 2018-01-31 20:40:27 +01:00 committed by GitHub
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@ -42,6 +42,19 @@ most to least recommended
you can even `exec 147<>/dev/tcp/r0c.int/531;cat<&147 &while read -rN1 x;do printf '%s' "$x">&147;done` (disconnect using `exec 147<&-; killall cat #sorry`)
## firewall rules
you'll want to port-forward `23` to `2323` for telnet and `531` to `1531` for plaintext:
```bash
iptables -A INPUT -p tcp --dport 23 -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 531 -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 2323 -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 1531 -m state --state NEW -j ACCEPT
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 23 -j REDIRECT --to-port 2323
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 531 -j REDIRECT --to-port 1531
```
## documentation
not really but there is a [list of commands](doc/help-commands.md) and a [list of hotkeys](doc/help-hotkeys.md)