What is SonicWALL? It seems to block facebook.com and stumbleupon.com. It says that "This site has been blocked by the network administrator." Block reason: Forbidden Category "Hacking/Proxy Avoidance Systems". I'm not sure why this is popping up, and I have never seen it before today.
It s a firewall that businesses use to prevent employees from surfing the net.
What is SonicWALL Network Security Appliance?