• Get application security done the right way! Detect, Protect, Monitor, Accelerate, and more…
  • The Web is changing and it should. HTTP 2.0 or HTTP/2 was released on 14th May 2015 with many great features, which helps business and ultimately enhances the user experience.

    A Little bit of background…


    So as you can see HTTP/2.0 is a second major version of the HTTP protocol history. Some of the goals for HTTP 2 are: –

    • Data compression of HTTP headers
    • Server pushes technologies
    • Loading page elements in parallel over a single TCP connection

    All above made me think of two things – Security & Optimization

    So are you ready to implement HTTP 2?

    Well, if you are using Apache or Nginx then you got to little wait as a supported version is yet to be released.

    LiteSpeed is a first web server to support HTTP 2, which I will explain how to install, enable & test it.

    LiteSpeed is the fourth largest web server and powering over 98% of HTTP/2 websites as I write.


    OpenLiteSpeed is open source version of Lite Speed web server. HTTP/2 is supported in 1.3.11 and 1.48+ versions.

    So in this guide, I will install 1.4.10 on Linux. There are two ways we can install – one by compiling the source code and second by their repository. I will walk you through both procedures.

    Download OpenLiteSpeed 1.4.10

    • Downloadable is available on the download page
    • Transfer the downloaded file to the server where you wish to install


    • OpenSSL 1.0.1+
    • OpenSSL-devel
    • gcc
    • gcc-c++
    • pcre
    • geoip
    • zlib
    • expat
    • autoconf

    You can install them by using following commands

    # yum install openssl openssl-devel gcc gcc-c++ pcre pcre-devel gcc autoconf expat-devel geoip-devel zlib-devel

    Install OpenLiteSpeed – Using Source Code

    • Go to folder where you have openlitespeed-1.4.10.tgz
    • Extract it by using the following command
    # gunzip -c openlitespeed-1.4.10.tgz | tar xvf –
    • It will create another folder in present working directory – openlitespeed-1.4.10
    • Go to openlitespeed-1.4.10
    # cd openlitespeed-1.4.10
    • Compile it using following commands
    # ./configure –enable-http2
    # make
    # make install

    It will take few minutes, and at the end, you will have confirmation on successfully installed.

    [OK] The startup script has been successfully installed!
    Installation finished, Enjoy!

    Woho! You have installed LiteSpeed web server, and it’s time to enable HTTP/2.0.

    Exciting? Let’s do it.

    You need to enable HTTP/2.0 with WebAdmin Console, which is accessible using hostname:7080

    Before we login into WebAdmin, need to change the credential. So here is how you can do it.

    • Go to /usr/lcoal/lsws/admin/misc
    # cd /usr/lcoal/lsws/admin/misc
    • Execute admpass.sh
    # ./admpass.sh
    • It will prompt to enter user/password and once done, will give you confirmation that it’s updated successfully.
    Administrator's username/password is updated successfully!

    Install OpenLiteSpeed – Using Repository

    • Add the repository in Linux/CentOS 6
    # rpm -ivh http://rpms.litespeedtech.com/centos/litespeed-repo-1.1-1.el6.noarch.rpm
    • Install OpenLite using yum command
    # yum install openlitespeed
    • It will take few seconds and will be installed under /usr/local/lsws

    Enable HTTP/2.0

    • Login into WebAdmin
    • Go to Listeners >> SSL
    • Click on Edit for “Security & Features”


    • Select HTTP/2 and click on Save


    • Restart LiteSpeed. You can use a startup script to do so.
    # /etc/init.d/lsws restart

    Note: if SSL is not configured, then you need to configure it first.

    So now, HTTP 2.0 is enabled and ready to test it.

    Test if HTTP/2.0 is enabled

    • Enter the URL and test it


    So you can see, it supports HTTP/2.0

    I hope above guide helps you to install and enable HTTP/2.0 in LiteSpeed web server.