product description zyxel usg20w vpn firewall device type firewall form factor external localisation europe data link protocol ethernet fast ethernet gigabit ethernet frequency band 24 ghz 5 ghz performance firewall throughput350 mbps brvbar vpn throughput90 mbps capacity user licencesunlimited brvbar concurrent ipsec vpn tunnels10 brvbar concurrent sessions20000 brvbar concurrent ssl vpn users1 brvbar ssl vpn users5 brvbar maximum number of confi