https://github.com/simon816/mcfirewall

Adds a firewall to your Minecraft server in case you can't use a system firewall
https://github.com/simon816/mcfirewall

Last synced: about 2 months ago
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Adds a firewall to your Minecraft server in case you can't use a system firewall

• Host: GitHub
• URL: https://github.com/simon816/mcfirewall
• Owner: simon816
• License: mit
• Created: 2019-03-06T22:00:51.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2019-03-06T22:01:37.000Z (over 7 years ago)
• Last Synced: 2025-03-02T13:50:35.436Z (over 1 year ago)
• Language: Java
• Size: 6.84 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# MCFirewall

Adds a firewall to your server in case you can't use a system firewall. Using a system firewall is still recommended.

Supports:

 - Forge

 - Sponge Forge

 - Sponge Vanilla

On loading, a `firewall.txt` file is created in the root directory (where `server.properties` is).

The format is a list of rules. Rules are processed in the order listed, first match wins.

Rules are given as an IP address range in [CIDR](https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing) notation. If a rule matches, the action is either to accept or reject.

Example firewall.txt:

```

# Allow loopback IP range

127.0.0.0/8 ALLOW

# Block everything else

0.0.0.0/0 BLOCK

```

ACCEPT and REJECT are also valid words.

Use `/firewall reload` from server console or an opped player to reload the rules from the file.

Every connection attempt is logged in the server console (and log file).  

In the event of a flood, the logger is rate limited:  

If more than 5 messages are logged each less than 2 seconds apart, then no messages are logged for the next 10 seconds.