Cisco Cisco Web Security Appliance S360 User Guide
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AsyncOS 9.2 for Cisco Web Security Appliances User Guide
Appendix A Troubleshooting
WCCP Problems
Network Connectivity on KVM Deployments Works Initially, Then Fails
Problem
Network connectivity is lost after previously working.
Solution
This is a KVM issue. See the section on "KVM: Network connectivity works initially, then
fails" in the OpenStack documentation at
.
Slow Performance, Watchdog Issues, and High CPU Usage on KVM
Deployments
Deployments
Problem
Appliance performance is slow, watchdog issues occur, and the appliance shows unusually high
CPU usage when running on an Ubuntu virtual machine.
Solution
Install the latest Host OS updates from Ubuntu.
General Troubleshooting for Virtual Appliances Running on Linux Hosts
Problem
Issues with virtual appliances running on KVM deployments may be related to host OS
configuration issues.
Solution
See the troubleshooting section and other information in the Virtualization Deployment and
WCCP Problems
•
Maximum Port Entries
In deployments using WCCP, the maximum number of port entries is 30 for HTTP, HTTPS , and FTP
ports combined.
ports combined.
Packet Capture
•
•
The appliance provides the ability to capture and display TCP/IP and other packets being transmitted or
received over the network to which the appliance is attached.
received over the network to which the appliance is attached.
Note
The packet capture feature is similar to the Unix tcpdump command.