Prohibit root users from accessing through SSH remote logon and restrict some users from logging on remotely.

Prohibit root users from accessing through SSH remote logon and restrict some users from remote logon-Linux Enterprise Application-Linux server application information. The following is a detailed description. 1. Prohibit ROOT users from accessing through SSH remotely.

Modify the/etc/ssh/sshd_config file. Find the following sentence:

# PermitRootLogin
Yes
As follows;
PermitRootLogin
No

Note: remove the # above.

Restart sshd server
[Root @ linuxsir001 root] # service
Sshd restart

2. Restrict Remote logon for some users

This account is currently not available.

Sometimes users in the same group can log on, some cannot log on remotely, and vipw can be used to view account information (/etc/passwd ), if the account information shell is/sbin/nologin, remote logon is prohibited. If you want to allow remote logon, change it to a shell that can be logged on, such as/bin/bash.