This document consolidates the various reasons one might see an Exinda appliance shutdown or restart itself unexpectedly.
|A spike in the connection rate
|Caused by DDOS attacks or network scans
|A state where some processes have hit a tipping point, causing the device to force a reboot
|Huge Policy Set
|This can cause restraints on the available RAM, causing unexpected shutdowns
|This does not always cause an unexpected reboot, however, it can be a contributing factor
|Using an old version of the firmware that has known issues, or has too much output to the serial console
- Some of these, such as a sudden spike in connections corresponding to an attack of various kinds (internal or external) are transient conditions and are not systematic.
- It is a best practice to have the Exinda behind a firewall in order to help mitigate these types of situations.
- Systematic problems like a kernel panic or process failure can correspond to bugs in the code.
If you are facing any of these issues, please contact Exinda Support for assistance.