ConfigServer Firewall (CSF) is a firewall and security tool for Linux servers. It provides a number of features for protecting servers from malicious activity, including IP address blocking, port blocking, and rate limiting.

IP Abuse is a database of IP addresses that have been reported for abusive behavior, such as spamming, hacking, or DDoS attacks. Integration with IP Abuse allows CSF to automatically block or rate limit IP addresses that are listed in the IP Abuse database.

To configure CSF and IP Abuse integration in Ubuntu, you will need to follow these steps:

Register an account with AbuseIPDB, and create an API key. The API is free to use, but you do have to create an account.

Install CSF:

To install CSF, you will need to download the installation script and run it as root:

Copy codewget https://download.configserver.com/csf.tgz
tar -xzf csf.tgz
cd csf
./install.sh

This will install CSF and its dependencies.

Configure CSF:

Once CSF is installed, you will need to configure it. This includes setting up firewall rules and defining the ports and protocols that should be allowed or denied. You can use the csf -c command to open the CSF configuration file in a text editor.

Enable IP Abuse integration:

You will need to add the following line to the /etc/csf/csf.blocklists configuration file:

Append at the end of configuration file using your AbuseIPDB account and API key.

# AbuseIPDB blacklist
# Details: https://docs.abuseipdb.com/#blacklist-endpoint
ABUSEIPDB|86400|10000|https://api.abuseipdb.com/api/v2/blacklist?key=YOUR_API_KEY&plaintext

This will tell CSF to use the IP Abuse database for IP address blocking and rate limiting.

Restart CSF:

After you have configured CSF and enabled IP Abuse integration, you will need to restart CSF to apply the new configuration. You can use the csf -r command to restart CSF.

Keep in mind that CSF and IP Abuse are complex tools with many features and configuration options. It is important to carefully read the documentation and understand the security implications of your configuration. You should also test your configuration carefully before deploying it

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