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KB25230 - How to install the 32-bit Network Connect client on 64-bit Linux platforms

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Last Modified Date7/31/2016 12:10 AM
This article describes how to install the 32-bit Network Connect client on 64-bit Linux platforms.
Problem or Goal


Starting with 8.1R8 and above, Pulse Desktop Client (Linux) is now available.  For continued stability with the Linux operating system, Pulse Secure strongly recommends to use the latest Pulse Desktop Client version as Network Connect will be end of life in 2019.  For more information about EOL of Network Connect, please refer to TSB43810 - EOL notification for Pulse Secure’s Network Connect (NC) client and Windows Secure Application Manager (WSAM) client software features.

For more information, please refer to KB40126 - [Pulse Secure Linux] How to use the Linux Pulse Secure CLI client.

From 7.3 and above, Pulse Connect Secure (PCS) devices support 64-bit Linux (Redhat, OpenSuse, and Ubuntu) for Network Connect.

Note: Pulse Secure made changes in the existing 32-bit Network Connect client to launch it on 64-bit Linux platforms. It has all the necessary components/dependencies for the 32-bit NC.

To launch Network Connect on 64-bit Linux, you must have the 64-bit Mozilla Firefox browser, with the Java plug-in already configured. You can use both the Oracle and OpenJDK JRE. If the OpenJDK JRE is installed, the IcedTea-Web plug-in (Java plug-in) should be 1.2 or above.

sudo apt-get install icedtea-7-plugin

You also must perform the procedure below:

  1. Install the 32-bit Java version (you must be root user to perform the steps):

    • 32-bit Java installation (Oracle JRE 6/ Oracle JRE 7, OpenJDK JRE 6/OpenJDK JRE 6):

      • Download jre-7u3-linux-i586.tar.gz and copy it to a folder (for example,/usr/java32).

      • Run the tar –xvf jre-7u3-linux-i586.tar.gz.

  2. Update the alternatives link for Java (use the correct commands for your flavor of Linux):

    • Use the sudo update-alternatives --install /usr/bin/java java <32 bit java path> <priority> command.

    • For example: sudo update-alternatives --install /usr/bin/java java /usr/java32/jre1.7.0_03/bin/java 10.

    • Ensure that the default Java version is still 64 bit. This can be checked by looking at the link currently points to string in the output of the update-alternatives --display java command.

    • If the default Java version is 32 bit, change it to 64 bit by using the sudo update-alternatives --config java command.

    • After performing the above steps, alternative links will look as shown in the image below (the highlighted rows show both the 32-bit Java path and the default Java version:

      User-added image

      Note: If 32 bit Java is installed via package managers, such as apt-get, yum or zypper, the 'alternatives' link may get automatically updated. In such a case, you can skip Step 2.

  3. Install the standard 32 bit libraries and components:

    • Ubuntu (12.05 and below):

      sudo apt-get  install ia32-libs
    • Ubuntu (13.x and above):

      Starting with Ubuntu 13.x, ia32-libs were removed from the package index. The following steps are a workaround to install the required libraries:

      sudo ln -s /usr/bin/update-alternatives /usr/sbin/
      # Network Connect looks for update-alternatives from /usr/sbin/
      sudo dpkg --add-architecture i386
      sudo apt-get update
      # Allowing multiarch libraries to get both necessary 32-bit libraries for Network Connect
      sudo apt-get install libstdc++6:i386 lib32z1 lib32ncurses5 lib32bz2-1.0 libxext6:i386 libxrender1:i386 libxtst6:i386 libxi6:i386
      # Retrieve ia32-libs manually
    • RedHat/Fedora:

      yum –y install xterm
      yum –y
      yum –y
      yum –y
      yum –y
      yum –y
      yum –y
    • OpenSUSE:

      zypper install

Now you can connect to the VPN server and click the start button to launch Network Connect. If the Network Connect launcher applet can find the 32-bit Java path in the alternatives links, Network Connect will successfully launch. Otherwise, the following error message is generated: Setup failed. Please install 32 bit java and update alternatives links using update-alternatives command. For more details, refer KB article KB25239.

To launch Network Connect via the command line, use the following command:

<java_path> -cp NC.jar -h <ivehostname> -u <username> -p <password> [-r <realm>]
-f <ivecertificate_in_der_format> [-l <gui_log_level> [-L <ncsvc_log_level>] [-y <proxy> -
z <proxy_port> [-s <proxy_username> -a <proxy_password> [-d <proxy_domain>]]]

<java_path> is the path to the 32 bit Java version.


  • The IcedTeaPlugin will display the error Start: Applet not initialized if the common name (CN) of the VPN’s web server certificate does not match the host name, which is typed in the address bar.
  • This is not an issue with the Pulse Secure VPN. To resolve this, you can add the common name (CN) in /etc/hosts and access the VPN server via the common name, instead of the IP address.
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