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Top Forums UNIX for Advanced & Expert Users Access to particular IP's from the solaris/LINUX server Post 302371728 by jim mcnamara on Monday 16th of November 2009 05:54:21 AM
Old 11-16-2009
One way, I guess:

Create a group in /etc/group on each remote node - icanssh as an example
Assign those users who are allowed to ssh into the machine to that group only on that machine.

Then in /etc/ssh/sshd_config add a line:
Code:
AllowGroups root icanssh


It is just easier and safer to deny all access for those users to a given node - disable their account. Or remove shell access
by defining the shell as /bin/false

As a general, deny all access, then grant access just to those who need it - is a far safer strategy
 

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LOGIN.ACCESS(5) 					      BSD File Formats Manual						   LOGIN.ACCESS(5)

NAME
login.access -- login access control table DESCRIPTION
The login.access file specifies on which ttys or from which hosts certain users are allowed to login. At login, the /etc/login.access file is checked for the first entry that matches a specific user/host or user/tty combination. That entry can either allow or deny login access to that user. Each entry have three fields separated by colon: o The first field indicates the permission given if the entry matches. It can be either ``+'' (allow access) or ``-'' (deny access) . o The second field is a comma separated list of users or groups for which the current entry applies. NIS netgroups can used (if configured) if preceeded by @. The magic string ALL matches all users. A group will match if the user is a member of that group, or it is the user's primary group. o The third field is a list of ttys, or network names. A network name can be either a hostname, a domain (indicated by a starting period), or a netgroup. As with the user list, ALL matches anything. LOCAL matches a string not containing a period. If the string EXCEPT is found in either the user or from list, the rest of the list are exceptions to the list before EXCEPT. BUGS
If there's a user and a group with the same name, there is no way to make the group match if the user also matches. SEE ALSO
login(1) AUTHORS
The login_access() function was written by Wietse Venema. This manual page was written for Heimdal. HEIMDAL
March 21, 2003 HEIMDAL
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