Network Management

Export to XLS fails while using HTTPS in NTA

Export to XLS fails while using HTTPS in NTA prompting an error message. A self-signed certificate fails the validation test because they are not from a trusted source. Use of fully qualified domain names (FQDN) in the website URL helps self-signed certificate to pass the validation test.

First published date

10/23/2018 10:32 PM

Last published date

12/17/2025 4:11 PM

Overview

'Export to XLS' fails with the following error message:

Unexpected Website Error. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

 

Product section

Netflow Traffic Analyzer

Cause

A self-signed certificate fails the validation test as they are not from a trusted source (e.g. verisign, etc.) .

 

Resolution

Use of fully qualified domain names (FQDN) in the website URL helps self-signed certificate to pass the validation test:

  1. Add the Orion domain and IP mapping into the hosts file, which is located in  c:\Windows\System32\drivers\etc\
  2. Add the following row in the same format:
  • XXX.XX.XX.XX     orion.mydomain.com 
  • where IP address is the IP address of the Orion server and domain name is the Orion public domain name, which is used by users. 
  1. Sometimes you may not be able to ping directly the IP address which is assigned to your server and only 127.0.0.1 works, therefore it is needed to place the following row into host file:
  • 127.0.0.1 orion.mydomain.com

 More information is provided in the article Scheduled Reports failure - How to resolve (PDF, Html, Csv, Excel).