D-Link DFL-1100 Product Manual - Page 80
Connections
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Connections Click on Status in the menu bar, and then click Connections below it. A window will appear providing information about the content of the state table. The state table shows the last 100 connections opened through the firewall. Connections are created when traffic is permitted to pass via the policies. Each connection has two timeout values, one in each direction. These are updated when the firewall receives packets from each end of the connection. The value shown in the Timeout column is the lower of the two values. Possible values in the State column include: TCP_CLOSE, TCP_OPEN, SYN_RECV, FIN_RECV, and so on. The Proto column can have: TCP - The connection is a TCP connection. PING - The connection is an ICMP ECHO connection. UDP - The connection is a UDP connection. RAWIP - The connection uses an IP protocol other than TCP, UDP, or ICMP. The Source and Destination columns show which IP and port on the source interface the connection is coming from, and which interface and port number the connection is going to. 80