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UNIX for Dummies Questions & Answers
Remote Login (Unix)
Post 3797 by Andy Hibbins on Wednesday 11th of July 2001 03:34:50 PM
07-11-2001
Yes, it is possible to disable remote logins.
What type of remote logins do you want to disable, ssh,telnet,rsh etc?
With ssh you can allow/disallow user logins vi the sshd_config file, telnet and rsh can be controlled via tcpwrappers or xinetd.
Andy Hibbins
What type of remote logins do you want to disable, ssh,telnet,rsh etc?
With ssh you can allow/disallow user logins vi the sshd_config file, telnet and rsh can be controlled via tcpwrappers or xinetd.
Andy Hibbins
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LEARN ABOUT FREEBSD
nologin
NOLOGIN(5) BSD File Formats Manual NOLOGIN(5) NAME
nologin -- disallow logins DESCRIPTION
Programs such as login(1) disallow logins if the nologin file exists. The programs display the contents of nologin to the user if possible and interrupt the login sequence. This makes it simple to temporarily prevent incoming logins systemwide. To disable logins on a per-account basis, investigate nologin(8). SECURITY
The nologin file is ignored for user root by default. IMPLEMENTATION NOTES
The nologin feature is implemented through login.conf(5), which allows to change the pathname of the file and to extend the list of users exempt from temporary login restriction. PAM-aware programs can be selectively configured to respect nologin using the pam_nologin(8) module via pam.conf(5). The nologin file will be removed at system boot if it resides in /var/run and cleanvar_enable is set to ``YES'' in rc.conf(5), which is default. Therefore system reboot can effectively re-enable logins. FILES
/var/run/nologin default location of nologin SEE ALSO
login(1), login.conf(5), pam.conf(5), rc.conf(5), nologin(8), pam_nologin(8), shutdown(8) BSD
May 10, 2007 BSD