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Cisco Security Appliance Command Line Configuration Guide
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Chapter 43 Troubleshooting the Security Appliance
Common Problems
Symptom The context configuration was not saved, and was lost when you reloaded.
Possible Cause You did not save each context within the context execution space. If you are
configuring contexts at the command line, you did not save the context before you changed to the
next context.
Recommended Action Save each context within the context execution space using the copy run start
command. You cannot save contexts from the system execution space.
Symptom You cannot make a Telnet connection or SSH to the security appliance interface.
Possible Cause You did not enable Telnet or SSH to the security appliance.
Recommended Action Enable Telnet or SSH to the security appliance according to the “Allowing
Telnet Access” section on page 40-1 or the “Allowing SSH Access” section on page 40-2.
Symptom You cannot ping the security appliance interface.
Possible Cause You disabled ICMP to the security appliance.
Recommended Action Enable ICMP to the security appliance for your IP address using the icmp
command.
Symptom You cannot ping through the security appliance, even though the access list allows it.
Possible Cause You did not enable the ICMP inspection engine or apply access lists on both the
ingress and egress interfaces.
Recommended Action Because ICMP is a connectionless protocol, the security appliance does not
automatically allow returning traffic through. In addition to an access list on the ingress interface,
you either need to apply an access list to egress interface to allow replying traffic, or enable the
ICMP inspection engine, which treats ICMP connections as stateful connections.
Symptom Traffic does not pass between two interfaces on the same security level.
Possible Cause You did not enable the feature that allows traffic to pass between interfaces on the
same security level.
Recommended Action Enable this feature according to the “Allowing Communication Between
Interfaces on the Same Security Level” section on page 7-6.
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