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3 changes: 3 additions & 0 deletions content/en/admin/prerequisites.md
Original file line number Diff line number Diff line change
Expand Up @@ -99,8 +99,10 @@ Edit `/etc/iptables/rules.v4` and put this inside:
-A FORWARD -j REJECT

COMMIT

```

Please note there must to be a new line after COMMIT, or you will receive the error message `Bad argument COMMIT`.
With iptables-persistent, that configuration will be loaded at boot time. But since we are not rebooting right now, we need to load it manually for the first time:

```bash
Expand Down Expand Up @@ -140,6 +142,7 @@ If your server is also reachable over IPv6, edit `/etc/iptables/rules.v6` and ad
-A FORWARD -j REJECT

COMMIT

```
Similar to the IPv4 rules, you can load it manually like this:
```bash
Expand Down