Zyxel Remote Access Security Router VPN Firewall w SFP (USG20-VPN)
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ZyWALL VPN300 VPN Firewall | Zyxel
ZyXEL Next Generation Wireless 11AC VPN Firewall with SFP port - Walmart.com
ZyXEL Next Generation VPN Firewall with 1 WAN, 1 SFP, 4 LAN/DMZ Gigabit Ports and 802.11ac/n WiFi [USG20W-VPN] - Newegg.com