Sec-Art: How to install and configure WebGoat in Ubuntu Server 16.04 / Ubuntu 18.04

First update the repository and upgrade system

    sudo apt-get update
    sudo apt-get upgrade

Now install the Java runtime environment in Ubuntu Server

    sudo apt-get install default-jre

Check the version of JRE

    java -version

Now download WebGoat from: https://github.com/WebGoat/WebGoat/releases

https://github.com/WebGoat/WebGoat/releases/download/v8.0.0.M21/webgoat-server-8.0.0.M21.jar

wget https://github.com/WebGoat/WebGoat/releases/download/v8.0.0.M21/webgoat-server-8.0.0.M21.jar

Now if the java version you have installed is 8 or less then use the below command to run webgoat

    java -jar webgoat-server-8.0.0.M21.jar

Or if your java version is 9 or higher then 9 then use the below command to run it :

java --add-modules java.xml.bind -jar webgoat-server-8.0.0.M21.jar

Now open up browser and navigate to WebGoat

http://(Server_IP_Address):8080/WebGoat

http://192.168.0.110:8080/WebGoat

we can also start WebGoat with a shell script

 #!/bin/sh  
 java --add-modules java.xml.bind -jar webgoat-server-8.0.0.M21.jar

chmod +x webgoat.sh
./webgoat.sh