I would propose the following change, or something similar, to sshd_config.5
It is then more clear which options are accepted and how the directive is used. /Lars Index: src/usr.bin/ssh/sshd_config.5 =================================================================== RCS file: /cvs/src/usr.bin/ssh/sshd_config.5,v retrieving revision 1.252 diff -u -p -u -r1.252 sshd_config.5 --- src/usr.bin/ssh/sshd_config.5 1 Sep 2017 15:41:26 -0000 1.252 +++ src/usr.bin/ssh/sshd_config.5 25 Sep 2017 12:49:21 -0000 @@ -576,11 +576,17 @@ TCP and StreamLocal. This option overrides all other forwarding-related options and may simplify restricted configurations. .It Cm ExposeAuthInfo -Enables writing a file containing a list of authentication methods and +Writes a temporary file containing a list of authentication methods and public credentials (e.g. keys) used to authenticate the user. The location of the file is exposed to the user session through the .Ev SSH_USER_AUTH environment variable. +The value can be set to +.Cm yes +or +.Cm no . +The default is +.Cm no . .It Cm FingerprintHash Specifies the hash algorithm used when logging key fingerprints. Valid options are: