The installation procedure of WebGoat on on Windows, Mac OS X, Ubuntu

Software requirement

• Operation System (Windows, Mac OS X, Ubuntu)
• JDK. Download from Here and Install 
• Apache Tomcat Server
• WebGoat war file. Download WebGoat war       

Create an Environment Variable JAVA_HOME

•     Windows
•     Ubuntu
•     Mac OS X --> Skip this step. No need to do anything.

Download and Install Apache Tomcat Server on Windows, Mac OS X, Ubuntu

Windows

1. Goto http://tomcat.apache.org --> Downloads --> Tomcat 8.0 --> "8.0.{xx}" (where {xx} is the latest upgrade number) --> Binary Distributions --> Core --> "ZIP" package (e.g., "apache-tomcat-8.0.{xx}.zip", about 8 MB).
2. Create your project directory, say "d:\myProject" or "c:\myProject". UNZIP the downloaded file into your project directory. Tomcat will be unzipped into directory "d:\myProject\apache-tomcat-8.0.{xx}".
3. For ease of use, we shall shorten and rename this directory to "d:\myProject\tomcat".  

Ubuntu

Mac OS X

• Goto http://tomcat.apache.org --> Download --> Tomcat 8.0 --> "8.0.{xx}" (where {xx} denotes the latest upgrade number) --> Binary distribution --> Core --> "tar.gz" package (e.g., "apache-tomcat-8.0.{xx}.tar.gz", about 8 MB)
• To install Tomcat:

1. Goto "~/Downloads", double-click the downloaded tarball (e.g., "apache-tomcat-8.0.{xx}.tar.gz") to expand it into a folder (e.g., "apache-tomcat-8.0.{xx}")
2. Move the extracted folder (e.g., "apache-tomcat-8.0.{xx}") to "/Applications".
3. For ease of use, we shall shorten and rename this folder to "tomcat".

 Configure Tomcat Server

• Open  tomcate-users.xml  file under "Tomcat_Home\conf\"
• Enable the Tomcat's manager by adding the highlighted lines, inside the <tomcat-users> elements:

<tomcat-users>

  <role rolename="manager-gui"/>

  <user username="manager" password="xxxx" roles="manager-gui"/>

</tomcat-users>

Copy the WebGoat.war to the Tomcat directory.:
Windows
copy webgoat-container-7.0.1.war and paste to D:\myProject\tomcat\
Ubuntu
sudo cp webgoat-container-7.0.1.war /var/lib/tomcat/webapps/
Mac OS X
sudo cp webgoat-container-7.0.1.war /Applications/tomcat/webapps/    

Start and Shutdown Tomcat Server:

Windows

1. Navigate to bin folder under tomcat directory by window Command Prompt

   Write below command to run tomcat server

       startup

   Type below command to stop tomcat server

     shutdown 
Ubuntu and Mac OS X
1. Goto to bin folder under tomcat directory using Terminal
     Write below command to run tomcat server
        sudo ./startup.sh
     Type below command to stop tomcat server
        sudo ./shutdown.sh

After starting tomcat server, Open browser and enter url like http://localhost:8080/webgoat_war_filename/ on browser address bar
Example: http://localhost:8080/webgoat-container-7.0.1/

 Log in as admin with Username is 'webgoat' and Password is 'webgoat'