One event will be generated when a connection is established. This event will include information about protocol, receiving interface, source IP address, source port, destination interface, destination IP address and destination port.
Open Example:
Oct 20 2003 09:47:56 gateway EFW: CONN: prio=1 rule=Rule_8 conn=open connipproto=TCP connrecvif=lan connsrcip=192.168.0.10 connsrcport=3179 conndestif=wan conndestip=64.7.210.132 conndestport=80
In this line, traffic from 192.168.0.10 on the LAN interface is connecting to 64.7.210.132 on port 80 on the WAN side of the firewall (internet).
Another event is generated when the connection is closed. The information included in the event is the same as in the event sent when the connection was opened, with the exception that statistics regarding sent and received traffic is also included.
Close Example:
Oct 20 2003 09:48:05 gateway EFW: CONN: prio=1 rule=Rule_8 conn=close connipproto=TCP connrecvif=lan connsrcip=192.168.0.10 connsrcport=3179 conndestif=wan conndestip=64.7.210.132 conndestport=80 origsent=62 termsent=60
In this line, the connection in the other example is closed.