Incoming and outgoing connections of the IPFire are displayed here. Some examples as explanation:
In the following diagram, a client from the LAN with IP 192.168.40.1 accesses IPFires webinterface. The TCP protocol with port 444 is used. The connection was established.
The Microsoft Messenger, which runs on the client with IP 192.168.49.1 via WLAN, contacts a Microsoft server with destination port 1863. TCP protocol is used with source port 3607 on the WLAN-client.
In this diagram, two P2P-clients connect with each other. This connection is also established via TCP.