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→Workaround for Appletalk issue
http://www.domain-logic.com/support/secure_tunnel_XP.htm
http://www.domain-logic.com/support/secure_tunnel_XP.htm
For basic troubleshooting refer to entries made in the log file /var/log/messages at the time the VPN connection was being established
For advanced troubleshooting techniques see http://pptpclient.sourceforge.net/howto-diagnosis.phtml
For advanced troubleshooting techniques see http://pptpclient.sourceforge.net/howto-diagnosis.phtml
In any point to point VPN connection, there will be numerous pieces of equipment that the signal passes through eg corporate firewalls, additional routers/firewalls, software firewalls/filters etc. All these steps in the chain must support protocol 47, if any piece of equipment in the chain does not support that protocol then the VPN connection will be unsuccessful. Sometimes these matters are out of the end users control, especially in corporate situations, or home user situations where low end broadband connections are used and ISP's limit functionality.
In any point to point VPN connection, there will be numerous pieces of equipment that the signal passes through eg corporate firewalls, additional routers/firewalls, software firewalls/filters etc. All these steps in the chain must support protocol 47, if any piece of equipment in the chain does not support that protocol then the VPN connection will be unsuccessful. Sometimes these matters are out of the end users control, especially in corporate situations, or home user situations where low end broadband connections are used and ISP's limit functionality.
If you have a modem and a router between your SME server and the Internet, keep in mind that you need to open TCP port 1723 on both devices, and they must both support the protocol 47 (GRE).
You cannot establish a VPN passthrough connection through an SME server to a local machine due to problems with the sme server supporting the passthrough of protocol 47 (GRE).
You cannot establish a VPN passthrough connection through an SME server to a local machine due to problems with the sme server supporting the passthrough of protocol 47 (GRE).
===Workaround for Appletalk issue===
===Workaround for Appletalk issue===
{{Note box|Support for Appletalk has been dropped from SME Server since version 8.0}}
Try this workaround to resolve issues with Kernel Panic errors, Appletalk and VPN disconnection problems
Try this workaround to resolve issues with Kernel Panic errors, Appletalk and VPN disconnection problems
