1 This module, when combined with connection tracking, allows access to 2 the connection tracking state for this packet. 3 .TP 4 [\fB!\fP] \fB\-\-state\fP \fIstate\fP 5 Where state is a comma separated list of the connection states to 6 match. Possible states are 7 .B INVALID 8 meaning that the packet could not be identified for some reason which 9 includes running out of memory and ICMP errors which don't correspond to any 10 known connection, 11 .B ESTABLISHED 12 meaning that the packet is associated with a connection which has seen 13 packets in both directions, 14 .B NEW 15 meaning that the packet has started a new connection, or otherwise 16 associated with a connection which has not seen packets in both 17 directions, and 18 .B RELATED 19 meaning that the packet is starting a new connection, but is 20 associated with an existing connection, such as an FTP data transfer, 21 or an ICMP error. 22 .B UNTRACKED 23 meaning that the packet is not tracked at all, which happens if you use 24 the NOTRACK target in raw table. 25
