The SonicWALL 2400 is a network security, firewall and wireless-networking appliance, according to the company's product description. When used properly, it can increase your network security without compromising your connection speed. If your SonicWALL 2400 system is malfunctioning or frozen, consider resetting the device to see if you can fix the problem on your own. No special tools or skills are required to reset the device; anyone can do it in a matter of seconds.
Examine the SonicWALL 2400s front panel. Look next to the USB and Ethernet ports to find the Reset button. It is not labelled, but the small button is easily visible.
Touch the tip of a pen or similar object against the Reset button. Hold the button down for five to 10 seconds.
Release the Reset button. The SonicWALL 2400 resets itself.