How to configure password for VTY (Virtual teletype) line access for Telnet and SSH in CISCO devices

 

VTY lines enable remote access using Telnet or SSH to the device. Many Cisco switches support up to 16 VTY lines that are numbered 0 to 15. 

If you want to secure Telnet and SSH sessions for CISCO devices with password "cisco", the configurations are following

Sw-Floor-1>en
Sw-Floor-1#
Sw-Floor-1#config t
Enter configuration commands, one per line.  End with CNTL/Z.
Sw-Floor-1(config)#line vty 0 15
Sw-Floor-1(config-line)#password cisco
Sw-Floor-1(config-line)#login
Sw-Floor-1(config-line)#end
Sw-Floor-1#