telnet 192.168.1.1 23
Once the port is open, use a client like (Windows) or the Terminal (macOS/Linux). telnet zte f6640
| Command | Description | | --------------------- | ----------------------------------------------- | | sysinfo | Displays system information. | | getver | Displays firmware version. | | backup-config | Backs up the current configuration. | | reboot | Reboots the router. | | ifconfig | Displays network interface configurations. | | route | Displays routing table. | | ping | Performs a ping test. | telnet 192
Not easily, and likely not at all on newer firmware versions. | | backup-config | Backs up the current configuration
For the average user, however, it is a security liability. Only enable Telnet during a controlled maintenance window, use a wired connection, and disable it as soon as your configuration changes are complete.