Technical Note: Captive Portal Does Not Display Pages or Pages Load Very Slowly
Description
Scope
Version: Network Sentry Appliances running 3.x or 4.x firmware
Solution
Captive Portal Does Not Display Pages or Pages Load Very Slowly
Scope
Version: Network Sentry Appliances running 3.x or 4.x firmware
Solution
Version: Network Sentry Appliances running 3.x or 4.x firmware (Firmware is listed in the Dashboard Summary panel)
Issue: Very slow access to tomcat-portal or in some instances tomcat-portal will not respond at all. This leads to delays or the inability to access remediation or isolation pages.
The following messages are found in apache error_log:
[Tue Apr 01 16:35:45 2014] [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header
[Tue Apr 01 16:35:45 2014] [error] ajp_read_header: ajp_ilink_receive failed
[Tue Apr 01 16:35:45 2014] [error] (120006)APR does not understand this error code: proxy: read response failed from 127.0.0.1:8009 (localhost)
[Tue Apr 01 16:35:57 2014] [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header
[Tue Apr 01 16:35:57 2014] [error] ajp_read_header: ajp_ilink_receive failed
[Tue Apr 01 16:35:57 2014] [error] (120006)APR does not understand this error code: proxy: read response failed from 127.0.0.1:8009 (localhost)
[Tue Apr 01 16:35:59 2014] [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header
[Tue Apr 01 16:35:59 2014] [error] ajp_read_header: ajp_ilink_receive failed
Workaround: Restart httpd and tomcat-portal services
Solution: Contact Support to analyze your systems and evaluate whether updating the apache service is appropriate. This process is completed via an Operating System update.