The use of XAuth is disabled for IPsec connections using IKE version 1.
Topic
Internet Key Exchange Extended Authentication
Applicable to
all
History
Priority
recommended
Mar 2022
Removed
The Internet Key Exchange version 1 (IKEv1) protocol was obsoleted by the IKE version 2 (IKEv2) protocol in December 2005. Since IKEv2 has now been widely adopted, and in doing so addresses various problems with IKEv1, approval for the use of IKEv1 as part of Internet Protocol security implementations has been rescinded.
2015
Agencies should disable the use of XAUTH for IPsec connections using IKEv1.
2010
It is recommended agencies disable the use of XAUTH for IPSec connections.