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This keyword can be followed by a list of group name patterns,
separated by spaces. If specified, login is allowed only for
users whose primary group or supplementary group list matches one
of the patterns. `*' and `?' can be used as wildcards in the
patterns. Only group names are valid; a numerical group ID is
not recognized. By default, login is allowed for all groups.
Tho by the looks of it, by default all groups are allowed, theres no mention of AllowGroups in my sshd_config
I have my specific group allowed (let's call it "one") in the sshd_config. I am using webmin by the way, but I checked the file directly to make sure my changes in webmin made it to the file.
If I try to SSH to the server with a user that does NOT belong to the "one" group, that user receives a message that says access denied. As soon as I add that user to the "one" group it attempts the connect (I no longer get access denied) but then it disconnects the user with no other messages. In the auth.log is what I posted above.
It has to be pam or something, but I can not figure it out.
Windows ssh clients probably some of them can be run from the command line, -v is verbose.
If you have a windowing ssh client just check the options/preferences section for a debugging/verbose check box.'
or like I said try to execut the program from the command line.
Thanks for the help everyone. I have found the problem. While setting up the system (this is all still in testing) I somehow changed the access rights on the / root directory to not allow anyone outside the owner user and group to read or execute. This was not allowing the ssh session to write the xauthority file to the user's home directory since it could not make it past the root directory.