CYBERSECURITY JOB HUNTING GUIDE
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    • Second Offer
    • Certification Scams
    • Fraud with courses
  • Analyzing a job ad
    • The Header
    • Building a Bridge
    • The Responsibilities
    • Desired Skills
    • Preferred Qualification
    • Benefits
    • Own skills vs job ad
    • Dealing with poorly written job ads
  • Resume writing
    • Templates
    • Building a draft
    • Resume in Detail
    • Understand the company
    • ATS and tailoring
    • Last Step
  • Cover letter
    • Writing a cover letter
  • Preparation & Interview
    • Organize your job hunt
    • SWOT Again (interview)
    • Twitter
    • The interview
    • Interview Questions Designed To Trick You
    • Post interview tasks
  • I did it all, but...
    • You are not alone
    • Try Something New
    • Why You'll Fail in Cyber Security
  • Yes, I got a job!
    • Two, or more offers?
    • Continued learning
    • Moving up
    • Lessons learned
  • Conclusion
  • Additional things
    • Reviews (labs, courses, certs) >
      • CompTIA A+
      • CompTIA Network+
      • CompTIA Security+
      • CompTIA Server+
      • CompTIA PenTest+
      • DroneSec DSOC
      • Defensive-Security Purple Labs
      • FAA Part 107
      • INE eCPPT & PTP
      • Letsdefend review
      • Microsoft AZ-500
      • RangeForce SOC 1
      • RangeForce SOC 2
    • Work In A Different Country >
      • The Work Permit
      • Working in the US
      • Studying in the US
      • Studying in Germany
      • Work in a different country
    • Other Resources >
      • Useful Links >
        • All about careers
        • Red resources
        • Blue resources
      • YouTube
      • Twitch
      • Podcasts
      • Books
      • Udemy
      • Thanks
    • Contributors
  • Stefan Waldvogel, where can I help?
  • Home
  • Introduction
    • Things you should know
    • The strategy
  • Paths into Cybersecurity
    • First steps
    • SWOT Analysis
    • How much time do you need?
    • Calculate& Evaluate Knowledge
    • Imposter syndrome
    • Time Management
    • Cybersecurity Domains
    • Cloud Security
    • Financial advice >
      • Credit score
    • The salary
    • Advocacy for underrepresented groups
  • Goal Setting & Career paths
    • Find your career in 5 steps
    • Cybersecurity career options
    • Career finding with LinkedIn
    • Transferable Skills (general)
    • Transferable IT Skills
    • Find a path with job descriptions
    • The I do not know path
    • Do you know “garbage” jobs?
    • “Bonus” knowledge
    • Learning & Motivation
    • Particular vs. any job
    • Pentester path (start)
    • Pen Testing as Career
    • SOC Analyst as career
    • Security Engineer as career
    • Compliance & Risk as career
    • How to find a career (IAM Engineer)
    • Find a company
  • Networking
    • Networking like a pro
    • LinkedIn
    • Referrals & Skills
    • LinkedIn Recruiters >
      • Working with a recruiter
    • Cyber Community
    • Networking University
    • Mentoring
    • Build your personal brand
    • Goal of Networking
  • Hands-on
    • The home lab >
      • Designing a home lab
      • Ways to create a home lab
      • Hypervisors >
        • VirtualBox
        • VMWare Player
        • QEMU/KVM
      • Docker
      • Operating Systems >
        • Kali Linux >
          • Installing Kali with VirtualBox
        • Parrot
        • BlackArch
        • Red Hat Enterprise Linux >
          • RHCSA
        • Security Onion >
          • Installation Security Onion
        • Metasploitable2
        • Ubuntu
        • Windows >
          • Windows in a VM
          • Windows with Virtual Machine Manager
          • Preparing Windows logging
          • John Strand's ADHD VM
      • Firewalls >
        • pfSense Installation
        • pfSense configuration for Security Onion
    • Volunteer Work
    • Note Taking
    • Red labs >
      • Cyberseclabs
      • HackTheBox >
        • HackTheBox Academy
      • INE red side
      • RangeForce
      • Offensive Security
      • TryHackMe
      • Virtual Hacking Labs
    • Red tools & techniques >
      • Atomic Red Team
      • DVWA
      • Metasploit
      • OSINT tools
      • OWASP Juice Shop
    • Blue labs >
      • Blue Team Labs Online
      • DetectionLab (free)
      • INE
      • Letsdefend >
        • LetsDefend password stealer
      • Opensecuritytraining (free)
      • PurpleLabs
      • RangeForce
    • Blue tools >
      • Install a Canary Token
      • CyberChef
      • EDR Lima Charlie installation
      • EDR LimaCharlie configuration
      • EDR Velociraptor (free)
      • EDR Bluespawn (free)
      • DeepBlueCLI (logs Powershell, free)
      • Raccine (ransomware protection, free)
      • Install RITA (detects C2 traffic, free)
      • Sandboxes >
        • Joe's Sandbox
      • SIEM ELK Stack
      • SIEM Graylog >
        • Getting started with Graylog
        • Install Graylog
        • Graylog Windows agent
        • Graylog Linux agent
        • Graylog as application
      • Suricata with RangeForce
      • Identifying IoCs with RangeForce
      • What2Log
  • Certifications, Degree & Courses
    • Overview
    • Free & Affordable Resources
    • Pick your cert
    • Skill Assessment
    • Get a cheap degree
  • (Employment) fraud & scams
    • Suspicious Offer
    • Second Offer
    • Certification Scams
    • Fraud with courses
  • Analyzing a job ad
    • The Header
    • Building a Bridge
    • The Responsibilities
    • Desired Skills
    • Preferred Qualification
    • Benefits
    • Own skills vs job ad
    • Dealing with poorly written job ads
  • Resume writing
    • Templates
    • Building a draft
    • Resume in Detail
    • Understand the company
    • ATS and tailoring
    • Last Step
  • Cover letter
    • Writing a cover letter
  • Preparation & Interview
    • Organize your job hunt
    • SWOT Again (interview)
    • Twitter
    • The interview
    • Interview Questions Designed To Trick You
    • Post interview tasks
  • I did it all, but...
    • You are not alone
    • Try Something New
    • Why You'll Fail in Cyber Security
  • Yes, I got a job!
    • Two, or more offers?
    • Continued learning
    • Moving up
    • Lessons learned
  • Conclusion
  • Additional things
    • Reviews (labs, courses, certs) >
      • CompTIA A+
      • CompTIA Network+
      • CompTIA Security+
      • CompTIA Server+
      • CompTIA PenTest+
      • DroneSec DSOC
      • Defensive-Security Purple Labs
      • FAA Part 107
      • INE eCPPT & PTP
      • Letsdefend review
      • Microsoft AZ-500
      • RangeForce SOC 1
      • RangeForce SOC 2
    • Work In A Different Country >
      • The Work Permit
      • Working in the US
      • Studying in the US
      • Studying in Germany
      • Work in a different country
    • Other Resources >
      • Useful Links >
        • All about careers
        • Red resources
        • Blue resources
      • YouTube
      • Twitch
      • Podcasts
      • Books
      • Udemy
      • Thanks
    • Contributors
  • Stefan Waldvogel, where can I help?
  CYBERSECURITY JOB HUNTING GUIDE

Graylog Installation 

Author: Stefan Waldvogel

Install Graylog for your home lab!

-in preparation-
Overview
You can install Graylog in many ways, the official help gives you some ideas (docs.graylog.org/en/4.1/pages/installation.html). This article shows you two options, via an OVA file and the manual way. 

Installation via OVA file
If you can, install it the most straightforward way with an OVA file (packages.graylog2.org/appliances/ova). Download the file and load it with VirtualBox or VMWare. Start the VM and you see a login page with the connection details. Open a browser and connect to the system with the user admin and the password ubunto.
You find the official guide here: docs.graylog.org/en/4.0/pages/installation/virtual_machine_appliances.html 
​Small hint: Graylog 4.1 does not have an ova file.


Maybe you want to become a SOC Analyst, and here it is not essential to know how to install this tool. A Security Architect might do it, but not you as a beginner. If you install it manually, think about preinstalled firewalls (e.g., CentOS -> you need to configure SELinux) and routing because you have to allow traffic from Syslog to your Graylog instance, and without you do not see anything.
If you have problems, use google or the massive official help to find the issue.

Manual installation on CentOS8 (Graylog 4.1)
Why should you install Graylog via the manual way? It is simple, and you learn how to fix problems and deal with firewalls and application logs. If you work for a company and your agent does not work, it is beneficial if you know more about Graylog as an application.
Get a standard CentOS8 iso and install it via a hypervisor. I am using Virtual Machine Manager on an RHEL host, but you can use any other hypervisor and host. One thing to consider: Select the right network. I am using nat default with DHCP and without IP reservation.
-> This is the standard setting, but if you restart the machine, you might get a different IP. Know this (you need to reconfigure some settings) or change the IP to a static IP (better option) before installing everything.
The following pictures are based on this video: www.graylog.org/videos/centos-install. The video is for CentOS7 and Graylog 3. This guide works for CentOS8 and Graylog 4.1. All new commands are in the documentation: docs.graylog.org/en/4.0/pages/installation/os/centos.html
Picture
epel and pwgen are optional and needed to create a password.

Install MongoDB, Elasticsearch, and Graylog. Graylog is now in version 4, the video has the link to version 3; please use the official installation guide to get the newest commands (copy and paste from there)!
Picture
Create test logs and configure firewall/rsyslog:
Picture
Configure inputs for local raw files
If you use a pre-configured system, you might not have to configure your system for the first test, but you need to configure an input. It is like an ear, and this ear listens for messages.
​Pick raw UDP under inputs.
Picture
Picture
You can select global or select your node. Then, pick a title and change the port to something higher than 1024 because if you use Linux, Graylog needs root rights to claim a lower port.

Create an input
on Linux, you can send messages to the input. Open a new console and write the command:
while true ; do logger -n 127.0.0.1 -P 1514 "I am here" ; sleep 2 : echo 'log send' ; done
Every two seconds, you send a UDP message to 127.0.0.1 on port 1514.

After a short amount of time, you get the messages and see them in Graylog.
-> This task is for a company not very useful, but if you have problems, it is relatively simple to fix. However, if you start with digesting Syslog or Windows logs with forwarders, you have more bricks, and you might not know where you should start with troubleshooting.
Getting started with graylog
Graylog Linux agent
Graylog Windows agent
Suricata with RangeForce
© 2021. This work is licensed under a CC BY-SA 4.0 license​