Security programs for Windows and ipchains or iptables on Linux machines. Release notes for more information), Zone Alarm, Symantec, and other Internet Other problems with regard to the Cisco VPN client, too. Ports need to be open in firewall software, such as BlackIce (BlackIce has Users running someįirewall software are reporting errors when trying to connect to the VPN In your concentrator and on your PIX should match exactly. Netmask 255.255.255.255 where password is your preshared key. On a Cisco PIX firewall used in conjunction with theĬoncentrator, use the command isakmp key password address xx.xx.xx.xx To the Configuration | System | Tunneling Protocols | IPSec LAN-to-LAN optionĪnd select your IPsec configuration. The exchange, logs will indicate a problem with keys. Well into the IKE main mode security associations. Logs may indicate that exchanges between the client and VPN server are fine Mismatched keys on either end of the VPN connection. You’re getting errors in your logs related to preshared keys, you may have Support, uninstall other clients and test before making that call. More thing regarding the client install – Cisco does not recommend installing Recommend it unless you really, really need Fast User Switching.) This could have its own problems, though, so I wouldn’t (Note:įast User Switching can be enabled by disabling the client’s “Start Before Their usernames and passwords instead of clicking a picture of a cat. Old standby,, still works, though, and users will need to type Somewhat unrelated note, make sure users are also aware that the VPN clientĭisables the XP welcome screen and Fast User Switching, which are commonly used To Start | Control Panel | Administrative Tools | Services | InternetĬonnection Sharing and disable the “Load on Startup” option.

Simply connects through another machine that is using ICS.

Note that this is not necessary if the VPN machine I recommend that the user replace ICS with a decent The user needs to disable ICS on his machine before

Internet Connection Sharing is having trouble installing the Cisco 3000 VPN However, they will give you a place to start as you work Not all of these tips will necessarily pertain to every VPN configurationĪvailable from Cisco. Has so many different ways to handle VPN connectivity, ranging from VPNĬapabilities included in some routers, to the VPN services offered by PIXįirewalls up to the Cisco VPN Concentrator, each has its own quirks. In the case of the Cisco VPN, this can be a true challenge since Cisco With all things IT, you will eventually run into problems that you need toĬorrect. Here are some common VPN problems you may encounter with your Cisco solution and how to fix them. If you use Cisco to power your VPN solution, you know it's not without problems.

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