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The MSEVEN protocol uses port 445. The NETBIOS ports (137 - 139) can be used for host name resolution. When the WinCollect agent polls a remote event log by using MSEVEN6, the initial communication with the remote machine occurs on port 135 (dynamic port mapper), which assigns the connection to a dynamic port. The default port range for dynamic ports is between port 49152 and port 65535, but might be different dependent on the server type. For example, Exchange servers are configured for a port range of 6005 – 58321 by default.