find2deny

---

find2deny

---

Tools to build Firewall Command for UFW from List of (Apache)-Log-files.

It creates a file block-ip.sh which contains Linux UWF-Command to block IP-network, but it does not change any Firewall-rules on your computer.

Installation

To install the latest release on PyPI <https://pypi.org/project/find2deny/>_, simply run:

::

pip install find2deny

Or to install the latest development version, run:

::

git clone [TODO] cd find2deny python setup.py install

Quick Tutorial

For example, you have a set of Apache Log-files in a directory apache2 like

• access.log
• access.log.1,
• access.log.2.gz,
• ...

The python script find2deny-cli can create a shell-Script block-ip.sh which contains commands like

::

#!/bin/bash
ufw deny from 1.2.3.4/0 to any
ufw deny from 1.2.3.4/1 to any
...

1. Make a Configuration-File: Simple copy this configuration to a file, say config.toml::

    verbosity = "INFO"
    # Path to apache log files in system
    log_files = ["apache2/access.log.*"]
    # Log Pattern
    log_pattern = '%h %l %u %t "%r" %>s %O "%{Referer}i" "%{User-Agent}i"'
    # temporary sqlite database
    database_path="./blocked-ip.sqlite"
   
   
    [[judgment]]
        name = "path-based-judgment"
        [judgment.rules]
            bot_request = [
                "/?XDEBUG_SESSION_START=phpstorm",
                "/phpMyAdmin/",
                "/pma/",
                "/myadmin/",
                "/MyAdmin/",
                "/mahua/",
                "/wp-login",
                "/webdav/",
                "/help.php",
                "/java.php",
                "/db_pma.php",
                "/logon.php",
                "/help-e.php",
                "/hell.php",
                "/defect.php",
                "/webslee.php",
                "http://www.123cha.com/",
                "http://www.wujieliulan.com/",
                "http://www.epochtimes.com/",
                "http://www.ip.cn/",
                "www.baidu.com:443"
            ]
   
    [[judgment]]
        name = "time-based-judgment"
        [judgment.rules]
            max_request = 501
            interval_seconds = 10
   
   
    [[execution]]
        name = "ufw_cmd_script"
        [execution.rules]
            script = "./block-ip.sh"
   

2. Run script::

    find2deny-init-db blocked-ip.sqlite
   

   to create a Sqlite-Database in file blocked-ip.sqlite. The filename must match the configuration database_path in the file config.toml.

3. Run::

    find2deny-cli config.toml
   

   to create file block-ip.sh. Then you can examinate the file block-ip.sh and run it from your shell to update your firewall.

Configuration

The syntax used in configuration file ist Toml <https://github.com/toml-lang/toml>_. There are three sections in a configuration files, as you see above

Common Configuration

This section defines common configurations, such as how much infos should be printed onto console, ect.

Judgment

This section defines a list of Judgments. They are identified by name. At this time there are only two judments: path-based-judgment and time-based-judgment. Each judgment has its owns configuration.

Judgments are classes, which use rules defined in configuration to decide which IPs should be blocked. They extend the class AbstractIpJudgment.

Execution

This section defines a list of executions. At this time there is only one execution. Executions are classes which create firewall-rules or execute something, which nessesary to block an IP, or , in this implementation, block the network, to which the ip belongs.