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KB40238 - Pulse Secure Linux on CentOS clients cannot connect using TLS 1.2

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Last Modified Date10/22/2016 3:47 PM
Synopsis
This article describes an issue with the Pulse Linux client on CentOS where the VPN tunnel cannot connect if TLS 1.2 only is set on the PCS device as the only security protocol. 
Problem or Goal
When the PCS secure gateway is configured to accept TLS 1.2 only, CentOS 6.4 users are unable to connect with the Pulse client for Linux.  If other TLS versions are allowed that the connection can fallback to then the connection gets established successfully and Pulse VPN tunnel starts.
Cause
Solution
TLS 1.2 support is introduced with gnuTLS 2.10.1.  In order to support TLS 1.2 on CentOS, it may be necessary to update the gnuTLS package to gnuTLS 2.10.1.  Run the following command to update libraries dependencies:
 
yum update

Refer to http://www.gnutls.org/ to download the updated package for Linux OS.
Related Links
Attachment 1 
Created ByNick Christen

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