nfq - NetFilter queue for Rust

nfq is Rust library for performing userspace handling of packets queued by the kernel packet packet filter chains.

License

In contrast to libnetfilter_queue which is licensed under GPL 2.0, which will require all binaries using that library to be bound by GPL, nfq is dual-licensed under MIT/Apache-2.0. To achieve this, nfq does not use libnetfilter_queue. Instead, nfq communicates using libmnl directly, which is licensed under LGPL.

Example

Here is an example which accepts all packets. ```rust use libc; use nfq::{Queue, Verdict};

fn main() -> std::io::Result<()> { let mut queue = Queue::open()?; queue.bind(libc::AF_INET, 0)?; loop { let msg = queue.recv()?; queue.verdict(msg, Verdict::Accept)?; } Ok(()) } ```