AuthIP

AuthIP is a Microsoft proprietary extension of the IKE cryptographic protocol.^[1][2] AuthIP is supported in Windows Vista and later on the client and Windows Server 2008 and later on the server. AuthIP adds a second authentication to the standard IKE authentication which, according to Microsoft, increases security and deployability of IPsec VPNs. AuthIP adds support for user-based authentication by using Kerberos v5 or SSL certificates.

AuthIP is not compatible with IKEv2,^[3] an IETF standard with similar characteristics;^[4] however Windows 7 and Windows Server 2008 R2 also support IKEv2.^[5]

See also

• SSTP

External links

• AuthIP in Windows Vista - The Cable Guy column at the Microsoft website
• The Authenticated Internet Protocol - The Cable Guy column at the Microsoft website