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Developer's Description By Cisco Systems. Simple to deploy and operate, the Cisco VPN Client allows organizations to establish end-to-end, encrypted VPN tunnels for secure connectivity for mobile employees or teleworkers.
Full Specifications. What's new in version 5. Date Added November 28, Version 5. If the public network matches the private network for example, a public IP address of The same problem can occur if you are using a virtual adapter and the public metric is smaller than the virtual adapter metric. In Windows 7 and Vista, you can increase the metric of the public network as follows:. Step 2 Right-click the icon representing the public interface and select Properties.
Step 4 Click Advanced in the General tab, and set the interface metric to 2 or greater. Step 2 Select the public interface and click properties for the public interface. Step 4 Click Advanced, and set the interface metric to 2 or greater. When a VPN connection is up, data meant for the private network stays local.
For example: In some cases, it is impossible for the VPN Client to make this modification. To work around this problem, make the change manually, using the following procedure:. Step 2 Right-click on the adapter in question and select Properties. Step 4 Click Advanced and increase the number in the "Interface metric" box by 1 it is usually 1, so making it 2 works.
Step 5 Click OK to exit out of all dialogs. Step 6 The VPN connection should now work. There is no limit to the size of the log when logging is enabled. The file will continue to grow in size until logging is disabled or the VPN Client program is closed. The log is still available for viewing until the VPN Client program is re-launched, at which time the display on the log tab and log window are cleared. The log file remains on the system and a new log file is created when the VPN Client, with logging enabled, is launched.
If your certificate has private key protection enabled, every time you use the certificate keys you are either prompted for a password to access the key, or notified with a dialog and asked to click OK. The prompt displayed when using a certificate with private key protection appears on the Windows Desktop. You do not see this message while at the Logon desktop, therefore the VPN Client cannot gain the access to the certificate needed to connect.
Make sure it is machine-based; otherwise it will not be accessible before logging on. You can configure the VPN Client to require the presence of a smart card when certificates are used.
If this feature is configured, the VPN Client displays an error message if a smart card is not present. The certificates need not be present on the smart card itself. To configure this feature, add the following line to the user's client profile, specifying the appropriate vendor for your smart card:. If you are using pre-shared keys instead of certificates, this requirement is not enforced, even if configured.
Versions of the Zone Labs Integrity Server earlier than 2. On the Integrity Flex client agent , under "Policies", the "Integrity Server" column flashes "Connected" then "Disconnected" over and over. Either shut down the Integrity client iclient. To disable the Integrity firewall, rename or delete the following files, then reboot:. To do this, you must be administrator.
Follow these steps:. Step 2 Select the Local Area Connection you use. Step 1 Extract the file vpnclient-win-msi The installer runs in English. Step 3 After installation is complete, modify vpnclient. The following error "Reason failed to enable virtual adapter" appears after Windows 7 and Vista reports a duplicate IP address detected. Subsequent connections fail with same message, but the OS does not report a duplicate IP address detected.
Step 1 Open "Network and Sharing Center". Step 2 Select "Manage Network Connections". This resolves the issue until the OS reports a duplicate IP address again. Follow the preceding steps to resolve it again.
If that doesn't work, you might have UAC enabled. If so, you must run cmd as administrator and repeat the previous registry workaround. Windows 7 and Vista support a feature called "Receive Window Auto-Tuning" that continually adjusts the receive Windows size, based upon the changing network conditions. Some people reported that auto-tuning causes network timeout problems with some applications and routers. If you have experienced such problems, you can turn it off using the following procedure:.
Step 1 Open an elevated command prompt. Step 2 Enter the following command to disable auto-tuning:. If this solution does not fix the problem, you can turn it back on, as follows:.
Step 1 Open up an elevated command prompt. When running under Windows Vista, you might encounter error The remote peer is no longer responding. To work around this error, upgrade the local NAT device firmware.
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