Disable multiple ssh logins for an OS user in Solaris


 
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Old 06-13-2019
Disable multiple ssh logins for an OS user in Solaris

Hi folks,
I am fairly a beginner when it comes to Solaris OS administration, but part of my job somehow has scope to provide L1-level of OS administration over a few solaris servers.

Now, we have a requirement to limit the number of simultaneous ssh logins/sessions to the server, sort of similar to a windows server where an OS windows account can only be used one at a time, so if another colleague logged in to that same windows server, my current RDP session will be cut off.

Is there any way to do the same for a solaris server? My servers are on SunOS 5.11 11.3 sun4v sparc.

I've done some googling and I see the files "/etc/limits" and "/etc/security/limits.conf" being mentioned but I don't have those in my server.

Any input from the community will be very much appreciated.
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SSH-LDAP-HELPER(8)					    BSD System Manager's Manual 					SSH-LDAP-HELPER(8)

NAME
ssh-ldap-helper -- sshd helper program for ldap support SYNOPSIS
ssh-ldap-helper [-devw] [-f file] [-s user] DESCRIPTION
ssh-ldap-helper is used by sshd(1) to access keys provided by an LDAP. ssh-ldap-helper is disabled by default and can only be enabled in the sshd configuration file /etc/ssh/sshd_config by setting AuthorizedKeysCommand to ``/usr/libexec/openssh/ssh-ldap-wrapper''. ssh-ldap-helper is not intended to be invoked by the user, but from sshd(8) via ssh-ldap-wrapper. The options are as follows: -d Set the debug mode; ssh-ldap-helper prints all logs to stderr instead of syslog. -e Implies -w; ssh-ldap-helper halts if it encounters an unknown item in the ldap.conf file. -f ssh-ldap-helper uses this file as the ldap configuration file instead of /etc/ssh/ldap.conf (default). -s ssh-ldap-helper prints out the user's keys to stdout and exits. -v Implies -d; increases verbosity. -w ssh-ldap-helper writes warnings about unknown items in the ldap.conf configuration file. SEE ALSO
sshd(8), sshd_config(5), ssh-ldap.conf(5), HISTORY
ssh-ldap-helper first appeared in OpenSSH 5.5 + PKA-LDAP . AUTHORS
Jan F. Chadima <jchadima@redhat.com> BSD
April 29, 2010 BSD