Hello, we are trying to implement Execute HTTP action feature on notifications, but we're not able to do so.

If we execute call from powershell with invoke-webrequest everything works fine, but from prtg, we're getting errors. 

"Failed to establish secure connection

[Step 0] Error connecting with SSL. Error connecting with SSL. error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure\\
[Step 1] Error connecting with SSL. Error connecting with SSL. error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure\\
[Step 2] Error connecting with SSL. Error connecting with SSL. error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure\\
[Step 3] Error connecting with SSL. Error connecting with SSL. error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure\\
[Step 4] Error connecting with SSL. Error connecting with SSL. error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure\\
[Step 5] Socket Error # 10054 Connection reset by peer.\\
[Unsecure] IOHandler value is not valid (Sensor/Source/ID: 17409/17409/1)"

We have checked everything that can be checked.

PRTG version we're running is: 18.4.45.1898+.

Any help would be appreciated, since from all other systems integration is working properly. Target web server works only under TLS 1.2, and have a valid certificate since it works from other systems.

Article Comments

Hello there,

It should work from PRTG as well with "TLS 1.2 only". Does it work in Powershell when run on the PRTG server as well? Is there maybe a proxy configured in PRTG?

To take a deeper look into this, please run a Wireshark capture on the PRTG server, one time when calling the url from Powershell and then another one when PRTG calls the url. You can also use a capture filter in Wireshark so that it only captures the traffic between PRTG and the target ip to keep the record smaller.

If you need to have as a look at the captures as well, send them to us by email (support@paessler.com) and mention this thread in your email.

Kind regards,

Erhard


Oct, 2018 - Permalink

Hi there, i have the exact same problem. The endpoint renewed the certificate and now I have this SSLv3 handshake error.


Mar, 2019 - Permalink

Hi Quentin,

Please see Erhards post as we need more details to troubleshoot this properly.

PRTGapi | Feature Requests | WMI Issues | SNMP Issues

Kind regards,
Stephan Linke, Tech Support Team


Mar, 2019 - Permalink