How to factory reset a SonicWALL TZ firewall

This procedure will help guide you through factory resetting SonicWALL TZ firewalls and get access back to the configuration page using the default credentials.

Steps to Factory Reset a SonicWALL TZ

  • Hold down the reset button for 10 seconds. The button is located next to the power jack. The device will reboot when you release the reset button.
  • Connect a computer to the firewall LAN port.
  • Set your computers IP address to 192.168.168.167 MASK 255.255.255.0.
  • Connect your computer to the LAN port on the SonicWALL TZ.
  • After the device reboots, it will be in recovery mode. Connect to at at http://192.168.168.168.
  • Click the boot icon next to “Current Firmware with Factory Default Settings.
  • After the device reboots, you can again connect to it at the 192.168.168.168 address. The login is: admin and password.
  • At this point, the device is reset to factory defaults.
SonicWALL TZ series typical front and back port layout TZ300
SonicWALL TZ series typical front and back port layout TZ300

These factory reset instructions apply to the following SonicWALL TZ models and others:

TZ200TZ250TZ270
TZ300TZ350TZ370
TZ400TZ450TZ470
TZ500TZ550TZ570
TZ600TZ650TZ670

If you want to learn more about the SonicWALL TZ series firewalls, visit their website:

SonicWALL TZ Series | Entry-Level Next-Generation Firewalls

Are you interested in more articles? Check out DSCP TOS CoS Precedence Conversion Chart

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