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KB40931 - Cannot establish a secure connection to the URL. Check if this connection requires 'http:' instead of 'https:'. If the problems persists, contact your system administrator. Made https request for GET / HTTP/1.1 to <host>:<port>

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Last Modified Date9/12/2017 4:17 AM
Synopsis
This article describes an issue where end user are unable to reach a web page through the rewrite engine with the error message of "Cannot establish a secure connection to the URL. Check if this connection requires 'http:' instead of 'https:'. If the problems persists, contact your system administrator. Made https request for GET / HTTP/1.1 to <host>:<port>".
Problem or Goal
When the end user attempts to reach a web page through the rewrite engine, the following error message will appear:
Cannot establish a secure connection to the URL. Check if this connection requires 'http:' instead of 'https:'. 
If the problems persists, contact your system administrator. Made https request for GET / HTTP/1.1 to <host>:<port>
Cause
This issue occurs due to ssl handshake failed between the Pulse Connect Secure internal port and backend resource.
Solution
To properly understand why the SSL handshake failure has occurred, please enable TCPDump on the Pulse Connect Secure device for the internal port, replicate the issue and download the raw file format. 

Using wireshark, open the raw capture and filter for packets for the problematic backend resource (i.e ip.addr==1.2.3.4).  From the filter packets, check for the following sequence:
  • Pulse Connect Secure device sends a Client Hello
  • Backend resource responds with a Server Hello
  • Backend resource sends Server Key Exchange
  • Pulse Connect Secure device sends Client Key Exchange
  • Pulse Connect Secure and backend resource send encrypted data
In most cases, the ssl handshake failure occurs due no response to the Client Hello.  This issue can occur for multiple reasons, but here is a list of commonly known issues:
Related Links
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Created ByK. Kitajima

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