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Graylog: Basics

recon-siem | Level: Easy  | Total Lab Runs: 0 | Premium Lab

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Lab Walkthrough Video:

In this challenge we will look at the basics of Graylog server reconnaissance.  Please start the lab and answer the following questions:


  1. Greylog UI is operating on which port?
  2. Which database service is running on one of the other machines in the lab?
  3. Logs are being collected in the Graylog server. How many machines are generating these logs?
  4. How many widgets are present on the “Main dashboard” dashboard?
  5. Logs are being collected in the Graylog server. Which facility is generating these logs?
  6. Which IP address is the source of least logs?
  7. What is the time interval between two consecutive messages sent by (in seconds)?
  8. Where Graylog is storing all log data?
  9. What is exact name of the index used to store logs?
  10. What is the REST API url to get the total number of users on the Graylog? 


  • This lab is dedicated to you! No other users are on this network :) 
  • Once you start the lab, you will have access to a root terminal of a Kali instance
  • Your Kali has an interface with IP address 192.X.Y.Z. Run "ip addr" to know the values of X and Y.
  • The Target machine should be located on the same subnet i.e 192.X.Y.0/24. 
  • Do not attack the gateway located at IP address 192.X.Y.1 


  • Username : admin
  • Password  : admin

1. Exact name of the index used to store logs:

The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:

  • Using automated scanners
  • Using brute force attacks
  • Denial of Service attacks
  • Attacking other student machines in challenges where you might achieve a shell on the vulnerable system
  • Attacking the lab infrastructure

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