. TZ600 Network Security Firewall - Expand control and protect your network. A fast connection to your business school remote office or retail site is only half the story; you also need to be able to securely manage it.The TZ500 and TZ600 give you enterprise-grade protection to stop cyberattacks as you expand and control your network.The TZ600 offers enterprise-class features and uncompromising performance. For distributed enterprises with remote offices all TZ products can be managed by the central office using a SonicWALL NSA or SuperMassive firewall and GMS..