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![Zyxel USG 20 SSL VPN Firewall - unboxing, review and basic configuration [HD] - YouTube](https://i.ytimg.com/vi/pYHK8CGId3c/maxresdefault.jpg "Zyxel USG 20 SSL VPN Firewall - unboxing, review and basic configuration [HD] - YouTube")
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Next Generation USG 20 VPN
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USG 20W-VPN (Device only) VPN firewall - USG20W-VPN-EU0101F - Tech Trade Center
User manual ZyXEL USG 20 (English - 959 pages)
