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MSS: (KeepAliveTime) Configure TCP keep-alive interval

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Determines how often TCP sends keep-alive packets to verify that an idle connection is still active. Shorter intervals detect disconnections faster but increase network traffic. The Windows default value is 2 hours (7,200,000 ms). A value of 5 minutes (300,000 ms) is a common recommendation for a balance between responsiveness and traffic.

Policy Details

Policy Name
Pol_MSS_KeepAliveTime
Registry Key
System\CurrentControlSet\Services\Tcpip\Parameters
Supported On
At least Windows Vista
Available Languages
en-usfr-fr

Configuration Elements

KeepAliveTime

Type: enum

Allowed Values
  • 150000 150,000 ms (2.5 minutes)
  • 300000 300,000 ms (5 minutes) - Recommended
  • 600000 600,000 ms (10 minutes)
  • 1200000 1,200,000 ms (20 minutes)
  • 2400000 2,400,000 ms (40 minutes)
  • 3600000 3,600,000 ms (1 hour)
  • 7200000 7,200,000 ms (2 hours) - Windows Default