Cisco Cisco Web Security Appliance S690 User Guide

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A-6
AsyncOS 9.1 for Cisco Web Security Appliances User Guide
 
Appendix A      Troubleshooting
  Hardware Issues
Zero Byte File Appears On FTP Servers After File Upload
FTP clients create a zero byte file on FTP servers when the FTP Proxy blocks an upload due to outbound 
anti-malware scanning.
Chrome Browser Not Detected As User Agent in FTP-over-HTTP Requests
Chrome browsers do not include a user-agent string in FTP-over-HTTP requests; therefore, Chrome 
cannot be detected as the user agent in those requests.  
Hardware Issues
Cycling Appliance Power 
Important! If you need to cycle power to your x80 or x90 appliance, wait at least 20 minutes for the 
appliance to come up again (all LEDs are green) before pushing the power button. 
Appliance Health and Status Indicators 
Lights on the front and/or rear panels of your hardware appliance indicate health and status of your 
appliance. For descriptions of these indicators, see the hardware guides, such as the Cisco x90 Series 
Content Security Appliances Installation and Maintenance Guide
, available from 
Specifications for your appliance, such as temperature ranges, are also available in these documents. 
Alert: Battery Relearn Timed Out (RAID Event) on 380 or 680 Hardware
This alert may or may not indicate a problem. The battery relearn timeout, in itself, does not mean there 
is any problem with the RAID controller. The controller can recover in the subsequent relearn. Please 
monitor your email for any other RAID alerts for the next 48 hours, to ensure that this is not the 
side-effect of any other problem. If you do not see any other RAID-type alerts from the system, then you 
can safely ignore this alert. 
HTTPS/Decryption/Certificate Problems