Lightning SA MultiCom, User Manual

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MultiCom Firewall User’s Manual 95
Chapter 5
Troubleshooting
When you are running a network (whether one computer connected directly to the
Internet or many) it is possible that problems can come up. Maybe the network is
giving you slow responses, some devices or computers are not reachable, you are
reaching the wrong computer or your filters do not seem to be working. This
chapter will help you fix some common networking issues.
To correctly fix the problem the source of it must be found. In networking this is
especially true because the problem may not necessarily point you toward the
answer (for instance a bad DNS server would stop you from reaching web
addresses but not if you only used the IP address.)
There are two questions you must always check...
1. Were the instructions followed correctly
2. Has anything recently changed before the problem occurred? (for instance
are you using new network drivers, new workstation on the network...)
If these two questions do not help you find the problem then it is time to do some
troubleshooting with the firewall itself.