====== How to enable telnet on DNS-300 ======
  - Store your current config to XML file by **Backup config** menu
  - Open XML file by simple text editor
  - find tag <telnet>0</telnet> and replace 0 with 1
  - don't touch anything else, otherwise DNS-300 don't allow to restore config back
  - save XML file
  - restore config from XML file by **Restore config** menu
  - reboot DNS-300

Now you can use **PuTTY** to telnet to your DNS-300. Use your username and password to login.
You can use command **su** and [[get root access|default root password]] to get root access.