Although many means and methods are available for establishing remote connectivity, network administrators can focus their attention on some common hot spots when troubleshooting errors, including authentication failure, protocol configuration problems, and physical connectivity.
Troubleshooting Physical Connectivity
When you're troubleshooting remote connectivity errors, it is often easy to forget the most basic troubleshooting practices. By this, we mean ensuring that all the physical connections are in place. When you suspect a physical connectivity problem, here are a few key places to look:
Improperly connected cable
Faulty networking devices
Now that we have looked at some of the more generalized considerations of remote connectivity troubleshooting from a physical perspective, we'll focus specifically on some of the commonly used remote access technologies.