l7-filter is an application layer packet classifier that can differentiate types of network traffic by protocol; for example it can identify bittorrent, IRC, SIP and many other types of traffic. In turn, these classifiers can be used to block or shape traffic according to a defined network policy.
The last maintainers of the project created a replacement tool with deep packet inspection - Netify. https://www.openhub.net/p/netify-daemon
There are no reported vulnerabilities