From the Manufacturer:
Small businesses need big security, too, and the newest WatchGuard® XTM 2 Series firewall/VPN appliances deliver that strong protection – but without the hefty price tag. Enterprise-grade security includes full HTTPS content inspection, VoIP support, and optional security subscriptions like Application Control and Intrusion Prevention Service. The XTM 25 and XTM 26 also provide the fastest throughput of any 2 Series models to date. Wireless models feature dual-band 802.11n for Wi-Fi with enhanced speed and responsiveness. Flexible, centralized management tools allow administrators to work from an intuitive console, scriptable CLI, and web UI. Any XTM 2 Series appliance makes an ideal stand-alone security solution or VPN endpoint on a WatchGuard protected network.