ports
ports - a brief overview
2010-01-08 02:41:49
Windows uses several ports for the implementation of their network functions. In earlier versions, Windows Me / NT ports were 137, 138 and 139 From the Windows 2000 Server lock message is sent over port 445 Of course, versions of Windows since 2000 is downward compatible, so the two procedures may operate in parallel.
Port 137
It supports so-called. NetBIOS Name Service. With its help Windows assigns each - as in the DNS - the computer names and IP addresses. In certain cases this can cause the following situation - if a user surfing the Web server using Windows, the latter sends a query to port 137 user's computer. This happens because the server on Windows uses winsock function gethostbyaddr () to read the name of a remote computer. This feature is, however, as implemented in Windows, the first is that if you read over NetBIOS, and only in case of failure is used to read by the DNS.
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