ufw-cidr-autoblock

README

ufw-cidr-autoblock

This tool automatically creates and applies, in conjunction with ufw, firewall block rules based CIDR lists (GEO-IP block)

Currently only IPv4 CIDR blocks are implemented.

The tool also fetches IP's from GitHub meta endpoint and stores those in a SQLite database.

The SQLite database is also used for storing explicit exclusions/inclusions of CIDR zones that one would like to allow/block.

ToDo

• Implement version ---> Reports the applications version
• Implement apply ---------> Apply the rules to the firewall
• Implement revert --------> Revert to previous ruleset
• Implement block/unblock -> Block/unblock individual zones/countries on the fly
• Implement reset ---------> Reset all the rules
• Implement report --------> Report about all the blocked countries/zones
• Implement IPv6 ----------> Currently only IPv4 supported

Credits

Thanks go out to http://ipverse.net who provide address block lists aggregated by country.

JSON file layout

{
    "_comment": "This is how a json file could look with exclusions/inclusions",
    "manual_entries": {
        "bad": [
                "192.168.200.0/22",
                "192.168.0.0/22",
                "10.0.1.0/22",
                "192.168.5.0/22"
        ]

    },
    "automatic_entries": {
        "example": {
            "foo": [
                "192.168.252.0/22",
                "192.168.10.0/22"
            ],
            "bar": [
                "10.0.0.0/22",
                "192.168.1.0/22"
            ]
        }
    }
}

Documentation

Overview

Copyright © 2021 Koen Kumps

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.