probe::netfilter.ip.pre_routing — Called before an IP packet is routed
netfilter.ip.pre_routing
ipproto_tcpConstant used to signify that the packet protocol is TCP
nf_stopConstant used to signify a 'stop' verdict
data_hexA hexadecimal string representing the packet buffer contents
nf_dropConstant used to signify a 'drop' verdict
ackTCP ACK flag (if protocol is TCP; ipv4 only)
synTCP SYN flag (if protocol is TCP; ipv4 only)
nf_repeatConstant used to signify a 'repeat' verdict
urgTCP URG flag (if protocol is TCP; ipv4 only)
daddrA string representing the destination IP address
familyIP address family
ipproto_udpConstant used to signify that the packet protocol is UDP
lengthThe length of the packet buffer contents, in bytes
dportTCP or UDP destination port (ipv4 only)
pshTCP PSH flag (if protocol is TCP; ipv4 only)
nf_queueConstant used to signify a 'queue' verdict
pfProtocol family - either 'ipv4' or 'ipv6'
nf_stolenConstant used to signify a 'stolen' verdict
nf_acceptConstant used to signify an 'accept' verdict
saddrA string representing the source IP address
sportTCP or UDP source port (ipv4 only)
indevAddress of net_device representing input device, 0 if unknown
data_strA string representing the packet buffer contents
rstTCP RST flag (if protocol is TCP; ipv4 only)
indev_nameName of network device packet was received on (if known)
outdev_nameName of network device packet will be routed to (if known)
finTCP FIN flag (if protocol is TCP; ipv4 only)
protocolPacket protocol from driver (ipv4 only)
iphdrAddress of IP header
outdevAddress of net_device representing output device, 0 if unknown