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Display Name (?):

NT LM Security Support Provider

Short Name (?):

NtLmSsp

Executable (?):

lsass.exe

Library (?):

None.

Depends On (?):

None.

Supports (?):

DNS Server, Message Queuing, Telnet, Windows Internet Name Service (WINS), Windows Media Unicast Service

Description (?):

Provides security to remote procedure call (RPC) programs that use transports other than named pipes.

OS (?):

NT4 Workstation, 2000 Professional, XP Home/Professional, Vista Home/Business, NT4 Server, 2000 Server, Server 2003, Vista Server

Startup (?):

Default	Home	Workstation	Server	Minimal	Tweaked	Automatic
Manual	Manual	Manual	Manual	Manual	Disabled	Disabled

Explanation (?):

This NT LM Security Support Provider service provides support to optional components such as the telnet server, an SQL database server or message queuing. This service uses communication methods other than named pipes. If you are not familar with named pipes then they are a first-in first-out (FIFO) communication system that allows unrelated programs to communicate in unique ways. This service handles other forms of communication though, such as predefined systems. Since this is the NT LAN manager security support provider it uses Windows based communication systems such as LM, NTLM, NTLMv2 and Kerberos to communicate. This service should be left to manual as it only runs when it is needed.