-1
votes
0answers
14 views

Server allows users to log in with any random password but not correct password

I just realized that any valid user can ssh into my 12.04 server with any random password, but they cannot log in with a correct password ("Permission denied, please try again."). Accounts are from ...
0
votes
1answer
99 views

How to make sshd create non-existing user when using kerberos?

I am setting my sshd to use kerberos auth. Everything was fine until I actually login via ssh. I got invalid user. If I added the account to the server running sshd, then I could login using password ...
1
vote
0answers
90 views

pam radius module access-reject

I am trying to set up an Ubuntu server that my users will connect to. I already have a Radius server running on a Windows box, and I would like for connections to this Ubuntu box to authenticate to ...
46
votes
2answers
5k views

How can I use a passcode generator for authentication for remote logins?

I would like to strengthen the authentication of my SSH logins by adding another factor: a passcode generator device, or a passcode generation application on my mobile phone. The only obvious options ...
1
vote
1answer
227 views

What are the common pitfalls that would stop Authorised Key SSH access, and how do I find and correct for them?

EDIT: This question was reworked to make it more useful to the community and less specific to me. Questions seem to come up reasonably often regarding ssh and problems with authorised keys access, ...