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How can I access PRTG through Citrix NetScaler?



Since I updated to PRTG 12 the PRTG web interface is not available any more. When calling the existing URL, I suddenly see an error message

Http/1.1 Service Unavailable

I try to access the PRTG web server through NetScaler. What can I do?

citrix http netscaler prtg reghack registry service-unavailable ssl unauthorized webserver

Created on Sep 19, 2012 7:03:57 AM by  Daniel Zobel [Product Manager]

Last change on Sep 19, 2012 7:08:29 AM by  Daniel Zobel [Product Manager]

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Accepted Answer



This article applies to PRTG Network Monitor 9.2 or later

Configure PRTG for NetScaler

With one of the latest PRTG 9 releases we made the PRTG web server more secure, so it does not allow SSLv2 connections any more. Citrix NetScaler seems to be incompatible with this setting.

There is a registry setting to force PRTG to use the old behavior again, allowing SSL v2 connections. In order to access your PRTG web server through Citrix NetScaler, please apply this setting.

For details, please see Allow SSL v2 Connections for PRTG.

Created on Sep 19, 2012 7:06:15 AM by  Daniel Zobel [Product Manager]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.