Graphs not Displaying with default Operation Names containing "->"

This one is more of a pre-emptive solution for those who may struggle with the same problem. When using the wizard with VoIP operations (and others) IP SLA Manager uses a naming convention of the form "Router1 -> Router 2". This actually breaks the display of graphs on the detail page for the operation. You will see the "broken GIF" icon (black square with a red X in the middle).

I found that the ">" is the problem. If you rename the operation to anything that doesn't have a ">" in it you're fine and everything starts working.

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kahmeelyon

After a little snooping around it turns out we have "URL Scanning" enabled in IIS. While troubleshooting another problem I saw that there were URLScan errors in the IIS logs so I went to investigate. Here's a snipit from my urlscan.ini file:

[DenyQueryStringSequences]
;
; If any character sequences listed here appear in the query
; string for any request, that request will be rejected.
;

< ; Commonly used by script injection attacks
> ; Commonly used by script injection attacks

Solarwinds was able to replicate the issue on their side and have confirmed this was the cause of my problem.

All comments

derhally

What version of IIS/Windows are you running on?

kahmeelyon

What version of IIS/Windows are you running on?

The server is Windows Server 2003 with IIS 6.0. The browser is IE7.

MarieB

Kahmeelyon--

Did you get the answer you needed?

kahmeelyon

[DenyQueryStringSequences]
;
; If any character sequences listed here appear in the query
; string for any request, that request will be rejected.
;

< ; Commonly used by script injection attacks
> ; Commonly used by script injection attacks

Solarwinds was able to replicate the issue on their side and have confirmed this was the cause of my problem.