Duolinks SW24 Vpn Router Dual Wan Intelligent Load Balancing : Use two WAN ports simultaneously to increase the available bandwidth Multiple Connection Options : Use broadband access from any broadband provider including leased T1 lines. Virtual Private Network (VPN) : Up to 25 simultaneous Remote-to-LAN or LAN-to-LAN IPSec VPN tunnels with VPN failover. Industry standard protection for any network using built-in advancenced Stateful Packet Inspection to prevent malicious attacks.