Packet-o-matic is a modular real time packet processor under the GPL license. It reads the packet from an input module, match the packet using rules and connection tracking information and then send it to a target module. The modular nature of packet-o-matic allows it to work for any protocol as long as its corresponding module is found. The built in management console allows you to telnet in packet-o-matic and change the configuration in real time. Main features of Packet-o-matic are :