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Connection to Talend Cloud is blocked and HTTP 406 error is given

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Contributor II
Contributor II

Connection to Talend Cloud is blocked and HTTP 406 error is given

Last Update:

Feb 9, 2024 2:34:39 PM

Updated By:


Created date:

Oct 25, 2023 5:05:03 PM

What is a Web Application Firewall (WAF)?

For Security, Talend has a WAF that could provide a false-positive and block traffic with a 406 HTTP response.

The WAF can identify legitimate traffic as suspicious (false positive), which could cause functional issues with Talend Cloud products. However, this is a highly unlikely situation.

Talend has tested the WAF in a non-blocking mode, which means it’s watching the traffic but doesn’t block any request. These extended tests were successful, so Talend has enabled blocking mode as a security measure.


What if you think you have traffic that is blocked but should not be?

The WAF returns an HTTP 406 error when a request is blocked. If you have received an HTTP 406 response code in a browser or log file, please contact Talend Support at and provide the following:
  • URL used for the connection
  • Public IP of the impacted system (this can be retrieved using from a browser)
The Talend Cloud operations team (SRE) will investigate and resolve the false-positive.
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Last update:
‎2024-02-09 02:34 PM
Updated by: