Archive for the tag 'Logins'

SBDavid
Jul 10th, 2009

Limit SSH User Logins

Limit SSH User Logins

SSH logins can be limited to only certain users who need remote access. If you have many user accounts on the system then it makes sense to limit remote access to only those that really need it thus limiting the impact of a casual user having a weak password. Add an AllowUsers line followed by a space separated list of usernames to /etc/ssh/sshd_config. For example:

AllowUsers alice bob

and restart the sshd service.

SBDavid
Jul 10th, 2009

Disable Root Logins

Disable Root Logins

SSH server settings are stored in the /etc/ssh/sshd_config file. To disable root logins, make sure you have the following entry:

# Prevent root logins:
PermitRootLogin no

and restart the sshd service:

service sshd restart

If you need root access, login as a normal user and use the su command.