Cisco Cisco Web Security Appliance S680 Guía Del Usuario
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Cisco AsyncOS for Web User Guide
Appendix A Troubleshooting
Feature Keys Expired
Feature Keys Expired
If the feature key for the feature you are trying to access (via the web interface) has expired, please
contact your Cisco representative or support organization.
contact your Cisco representative or support organization.
FTP Problems
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Also see:
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URL Categories Do Not Block Some FTP Sites
When a native FTP request is transparently redirected to the FTP Proxy, it contains no hostname
information for the FTP server, only its IP address. Because of this, some predefined URL categories
and Web Reputation Filters that have only hostname information will not match native FTP requests,
even if the requests are destined for those servers. If you wish to block access to these sites, you must
create custom URL categories for them using their IP addresses.
information for the FTP server, only its IP address. Because of this, some predefined URL categories
and Web Reputation Filters that have only hostname information will not match native FTP requests,
even if the requests are destined for those servers. If you wish to block access to these sites, you must
create custom URL categories for them using their IP addresses.
Large FTP Transfers Disconnect
If the connection between the FTP Proxy and the FTP server is slow, uploading a large file may take a
long time, particularly when Cisco Data Security Filters are enabled. This can cause the FTP client to
time out before the FTP Proxy uploads the entire file and you may get a failed transaction notice. The
transaction does not fail, however, but continues in the background and will be completed by the FTP
Proxy.
long time, particularly when Cisco Data Security Filters are enabled. This can cause the FTP client to
time out before the FTP Proxy uploads the entire file and you may get a failed transaction notice. The
transaction does not fail, however, but continues in the background and will be completed by the FTP
Proxy.
You can workaround this issue by increasing the appropriate idle timeout value on the FTP client.
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.
anti-malware scanning.
HTTPS/Decryption/Certificate Problems
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