Keep high-value branch traffic under control with the SonicWall TZ670 Secure Upgrade Plus Advanced Edition 3-year package. This model is aimed at sites that have outgrown entry-level firewalls and need stronger interface density, faster uplinks, and a security platform that can keep pace with heavier traffic patterns. The 10 Gigabit Ethernet foundation and SFP/SFP+ expansion support cleaner integration into modern switching and WAN designs. For infrastructure teams, the value is in matching appliance size to site demand. The TZ670 is well suited to larger branch offices, regional hubs, and distributed environments where policy enforcement, threat inspection, and segmentation must stay consistent as traffic grows. Its 8-port design gives you room to separate WAN, LAN, and dedicated segments without immediately adding external hardware. The Secure Upgrade Plus Advanced Edition term also helps procurement and operations stay aligned. Instead of treating the firewall as a one-off purchase, you get a defined refresh path that supports lifecycle planning and reduces the risk of running older edge hardware past its useful window. For teams that want a serious branch firewall without stepping into a full enterprise chassis, this model lands in the right place.