TCP/IP Troubleshooting

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Troubleshooting TCP/IP Database Files

Table 3.13 lists the UNIX-style database files that are stored in the %SystemRoot%\System32\Drivers\Etc directory when you install Microsoft TCP/IP:

Table 3.13 TCP/IP Database Files

File Name Use
Hosts Provides host name-to-IP-address resolution for Windows Sockets applications
LMHOSTS Provides remote NetBIOS name-to-IP-address resolution for NetBIOS applications such as Windows-based networking
Networks Provides network name-to-network ID resolution for TCP/IP management
Protocols Provides protocol name-to-protocol ID resolution for Windows Sockets applications
Services Provides service name-to-port ID resolution for Windows Sockets applications

To troubleshoot any of these files on a local computer, make sure the entry format in each file matches the format defined in the sample file originally installed with Microsoft TCP/IP. Check for spelling errors, invalid IP addresses, and identifiers.

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