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I cannot contact to our corporate VPN from outside of our network using the Cisco SSL VPN Client; I am the only user on our network experiencing this issue. When I attempt to connect using the SSL VPN Client, I recieve an error stating &quot;The VPN client was unable to successfully verify the IP forwarding table modifications. A VPN connection will not be established.&quot; This error is received after authentication occurs and while the tunnel is being established. Multiple attempts will sometimes result in success but it is rare.<br />
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I am Windows Vista Business SP1 (although the error occured before the installation of SP1). Hardware is HP Compaq 6710b.
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I cannot contact to our corporate VPN from outside of our network using the Cisco SSL VPN Client; I am the only user on our network experiencing this issue. When I attempt to connect using the SSL VPN Client, I recieve an error stating "The VPN client was unable to successfully verify the IP forwarding table modifications. A VPN connection will not be established." This error is received after authentication occurs and while the tunnel is being established. Multiple attempts will sometimes result in success but it is rare.

I am Windows Vista Business SP1 (although the error occured before the installation of SP1). Hardware is HP Compaq 6710b.

Cisco SSL VPN Not Connecting - VPN Client Cannont Verify IP Forwarding Table

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.

SSL / HTTPS

Windows Vista is an operating system created by Microsoft as the successor to Windows XP. It was intended for PCs, workstations and laptops, and shares the same code base as its successor, Windows 7. New features included an updated graphical user interface (GUI) and visual style dubbed Aero, a new search component called Windows Search, redesigned networking, audio, print and display subsystems, and new multimedia tools. Vista aimed to increase the level of communication between machines on a home network, using peer-to-peer technology to simplify sharing files and media between computers and devices. Windows Vista included version 3.0 of the .NET Framework, allowing software developers to write applications without traditional Windows APIs.

Windows Vista

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.