Modify ssh port and disable root remote login in linux

In linux, modify the ssh port and disable root remote login settings-Linux Enterprise Application-Linux server application information. For details, refer to the following section. Modify ssh port 22 in linux
Vi/etc/ssh/ssh_config
Vi/etc/ssh/sshd_config

Then, change the value to port 8888.
Service sshd restart (redhat as3) as root)
Use putty, port 8888

In Linux, the default SSH port is 22. For security reasons, modify the SSH port to 1433 as follows:

/Usr/sbin/sshd-p 1433

To enhance security
First, add a user with normal permissions:
# Useradd uploader
# Passwd uploader
// Set the password

The production machine prohibits ROOT remote SSH login:
# Vi/etc/ssh/sshd_config

Set
PermitRootLogin yes
Change
PermitRootLogin no
Restart sshd service
# Service sshd restart

For remote management, use uploader as the common user to log on, and then use su root to switch to the root user to obtain the highest permission.