- Download and InstallBy Bradley Mitchell, About.com GuideSee More About:vpn clientscisco networkingfree software downloads System Requirements:Client must run one of the following operating systems: Windows 98 or newer Microsoft WindowsMac OS XLinux Solaris UnixVPN Servers Supported:The is compatible with the following VPN servers from Cisco: Cisco VPN 3000 Series Concentrator Software 3.0 and later Cisco IOS Software 12.2(8)T and later Cisco PIX Firewall Software 6.0 and later VPN Tunneling Protocols Supported:PPTP, L2TP, L2TP/IPsec and several other forms of IPsec related to ESP, NAT, UDP and TCP.Client Restrictions: incompatible with VPN clients from other vendors incompatible with many personal firewalls. Firewalls may need to be specially configured, or turned off, when running the incompatible with Windows Internet Connection Sharing (ICS incompatible with AOL 7.0 and AOL 8.0 Download Location:http://tools.cisco.com/support/downloads/pub/Redirect.x?mdfid
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