If you want to restrict or allow particular user to do a ssh you need to take following steps. Based on your configuration it will allow or restrict to do a ssh to particular user/s.
1. Open a sshd.config file
" vi /etc/ssh/sshd_config "
2. if you want to allow to do a ssh for a particular user/users. you need to add below config to sshd_config file
"AllowUsers user1 user2"
Ex : "AllowUsers chamara menul sandya"
3. if you want to deny to do a ssh for a particular user/users. you need to add below config to sshd_config file
DenyUsers user1 user2"
Ex : "DenyUsers chamara menul sandya"
4. Finally save the "sshd_config" file and restart the ssh service
Ex : /sbin/service sshd restart (only for a red hat servers)
1. Open a sshd.config file
" vi /etc/ssh/sshd_config "
2. if you want to allow to do a ssh for a particular user/users. you need to add below config to sshd_config file
"AllowUsers user1 user2"
3. if you want to deny to do a ssh for a particular user/users. you need to add below config to sshd_config file
DenyUsers user1 user2"
Ex : "DenyUsers chamara menul sandya"
4. Finally save the "sshd_config" file and restart the ssh service
Ex : /sbin/service sshd restart (only for a red hat servers)