NAS Technology Consulting

IPSEC error 10048

October 12th, 2010

“Could not start the IPSEC Services service on Local Computer.

Error 10048: only one usage of each socket address (protocol/network adress/port) is normally permitted.”

http://blogs.technet.com/b/sbs/archive/2008/07/17/some-services-may-fail-to-start-or-may-not-work-properly-after-installing-ms08-037-951746-and-951748.aspx

1645-1646 – Used by IAS
1701-1701 – Used by L2TP
1812-1813 – Used by IAS
2883-2883 – Used by AUTD
4500-4500 – Used by IPSEC

Modify the following registry key:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParametersReservedPorts

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