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Cisco Systems has released a new family of virtual private network (VPN) products for businesses of all sizes. The VPN products--which Cisco acquired in its purchase of Altiga Networks--give remote workers inexpensive and secure high-speed connections to their corporate networks over the Internet. Prices for Cisco's VPN 3000 Concentrator products range from $4,000 to $40,000. Cisco also has released Cisco Secure PIX 506 Firewall, technology that offers security for small businesses and branch offices.