Python module to read from nflog.
This is a basic example, the nf_callback_packet_handler obviously needs to be filld with something that actually does someting with the packet.
def nf_callback_packet_handler( indev, # (int) Inbound network device number outdev, # (int) Outbound network device number ifname, # (str) Network device name proto, # (int) Ethertype, see net/ethernet.h payload_len, # (int) Length of payload payload, # (bytes) Payload hw_hdr_len, # (int) Length of hardware link-layer header hw_hdr, # (bytes) Hardware header ): pass import nflog nflog.setgroup(1) nflog.setcb( nf_callback_packet_handler ) nflog.start() n = nflog.handle()Too make all the above work, you also have to have setup nflog rules in your packetfilter! And use the right group, once started the group can not be changed.
This packet depends on libnetfilter_log, so make sure that it is installed. Building and installing, is just normal procedure:
python setup.py build python setup.py install