4-port Cisco 520 Secure Router, ADSL over IDSN (Annex B) WAN WAN Interface: ADSL over ISDN (Annex B) Wifi: Ne Product Overview The Cisco 500 Series Secure Routers deliver: • High performance broadband access for small offices and teleworkers • Highly secure remote access and site-to-site connectivity with IP Security (IPsec) VPN, Secure Sockets Layer (SSL) VPN, and dynamic multipoint VPN (DMVPN) • Built-in threat defense, including: – Stateful packet inspection (SPI) firewall to help minimize web and email threats – Intrusion prevention system (IPS), providing protection from attacks, worms, and viruses by detecting and stopping these threats before they can affect the network – Cisco IOS® Content Filtering to restrict access to undesirable websites and help guard against malware and phishing attacks • Highly secure 802.11b/g wireless networking option to connect mobile employees in the workplace • Support for static routing and dynamic routing protocols to easily adapt to diverse network environments • Quality of service (QoS) for crisp voice and video communications • 4-port 10/100 managed switch with VLAN support to interconnect workplace devices such as computers, servers, and printers • Simple deployment, management, and troubleshooting with Cisco Configuration Assistant