On 2 October 2014 13:05, Jason L Tibbitts III <tibbs@math.uh.edu> wrote:
>>>>> "KF" == Kevin Fenzi <kevin@scrye.com> writes:

KF> Sadly that won't work. The only people who have accounts are those
KF> in cla_done + 1 group. So, the people without that don't even have
KF> an account, so they can't authenticate. ;(

Is it possible to give them accounts that have no permission to do
anything?  I used to change the shell to /usr/local/bin/terminated,
which printed a message about the account being closed.

In this case that would be close to a hundred thousand accounts linked to /bin/noshellforyou for the 3200 that are cla+1. In the past that was a great way to DOS a machine.. just have a sshbot go by and get a bunch of nologins and the amount of cpu for login search/setup/deny was enough to DOS a box

The only solution I have seen in practice is having the ssh banner set, but everywhere I worked at previously was legally required to have messages in banners so my world view is biased.

 - J<
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