Honeyports is a Python 3-based active defense script that listens on configurable TCP ports as decoys. When a full connection is made to these ports, the tool interacts with the host OS firewall (iptables on Linux, netsh on Windows, pfctl on macOS) to block all future traffic from the attacker's IP address. It features a web UI for configuration, thread-safe concurrent handling of multiple connections, IP whitelisting to avoid blocking legitimate users, and automatic elevation of privileges to modify firewall rules. The tool is a modern rewrite of a 2013 project, designed to be cross-platform and efficient, replacing the original CPU-intensive loop with threading. It is intended for use by defenders to actively block scanning and attack attempts.

The tool actively blocks IP addresses that connect to decoy ports, reducing the attack surface by preventing repeated scanning or connection attempts from the same source. It does not itself introduce a vulnerability but acts as a defensive mechanism. Misconfiguration or improper whitelisting could potentially block legitimate users or services. There is no indication of exploitation or vulnerability in the tool itself.

This is a defensive security tool rather than a vulnerability. No patch or remediation is required. Users should ensure proper configuration, including IP whitelisting, to avoid accidental blocking of legitimate traffic. Running the tool requires administrative privileges to modify firewall rules. Since this is an open-source tool, users should review the code and test in controlled environments before deployment.