The root user logs on to the linux system via telnet.

The root user logs on to the linux system via telnet-general Linux technology-Linux technology and application information. The following is a detailed description. By default, the root user cannot connect to the linux operating system through telnet, which is also insecure. However, technically speaking, this can be achieved.

There are two methods:
(1) # mv/etc/securetty. bak

Or
(2) # vi/etc/pam. d/login
Comment out the line auth required pam_securetty.so.
Change:
# Auth required pam_securetty.so
Save and exit.
You can use the root user to log on to the linux system via telnet.