CYBERSECURITY JOB HUNTING GUIDE
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      • Install a Canary Token
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      • Install RITA (detects C2 traffic, free)
      • Sandboxes >
        • Joe's Sandbox
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      • SIEM Graylog >
        • Getting started with Graylog
        • Install Graylog
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    • 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?
  • 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

Install Graylog windows agent

Author: Stefan Waldvogel

Log gathering with the help of sidecar

-under construction-
Overview
Graylog can digest data from Windows and Linux clients. This article is based on: www.graylog.org/webinars/graylog-inputs but adds a troubleshooting section because the video does not explain the firewall settings.

General setup to see if Graylog is installed:
Picture
This task was a quick check to see if Graylog works.
If you are sure Graylog is working, you can skip this short task.​

​Create a Windows host
Picture
During the other article, we created a Graylog server, and now we need a Windows client. You can use any Windows OS. If you do not have a Windows 10, download it here: www.microsoft.com/en-us/evalcenter/evaluate-windows-10-enterprise.
​Install the OS via a hypervisor, pick the right network (graylog server and the windows client have to be in the same subnet), and move on. Technically you can use a different PC with Windows if you have one.

Configure Graylog sidecar
Sidecar is a wrapper script, and it helps you to install and configure the Windows agent. Next, move back to your Graylog server and open Graylog's web interface. We can do most things with the web interface.
Picture
Configure a Graylog input
Graylog needs a place where the data is coming in. Sidecar only is for the configuration; the input controls/accepts/ allows the data flow.
Picture
Graylog index
​This is the index for Elastic.
Picture
Graylog Stream
A Graylog stream is helpful if we want to separate data from different resources. Windows logs are in a separate area, and it is easier to manage all the data.
Picture
Install the windows agent
Switch back to your Windows box and download the agent: github.com/Graylog2/collector-sidecar/releases. You will get a warning; that is okay.
Picture
Check Graylog (sidecar)
Switch back to your Graylog Linux box and see if the Sidecar agent is checked in. If yes, great; if not, you might have a problem with your firewall. Your Linux box must allow TCP 9000 and later TCP 5044. Port 9000 is the sidecar agent, and the traffic comes on port 5044.
If you have problems, check the logs on the Windows side and the Linux side. If you follow the official video, the firewall settings are not explained.
If you see the sidecar agent, create and apply a configuration.
Picture
If you have trouble with the firewall, you can use the GUI. Install the GUI with:
​yum install firewall-config
Start the GUI with:
firewall-config
The firewall looks like this:
Picture
Under options, you can set "LogDenied=all." You can now see if the Windows client is sending logs to your Linux box and getting rejected by your Linux firewall. The command to see the logs is:
sudo tail -f /var/log/messages
Hint: the newest messages are on the bottom.
If you send data from your Windows box and do not see anything, you might have a network problem, or the windows firewall has a problem with outgoing traffic.
If you use pfSense or a different firewall, allow both data streams (9000 and 5044).


See the logs:
After some minutes, all windows logs are visible under streams.  ​
Picture
Conclusion
Graylog is simple to install, and it is free. If you want to become a SOC Analyst, you can learn all basic SIEM features for free. If you know how to install agents, you can help a customer to fix some fundamental problems.
You can learn the same things with Splunk or ELK. Installing an agent/forwarder with Splunk is somewhat more straightforward, but this version of Graylog is free, and Splunk's free version has a ton of limitations, and the paid versions are costly. Smaller companies do not need Splunk; Graylog is fine.
back: SIEM Graylog
Next: Suricata with RangeForce
© 2021. This work is licensed under a CC BY-SA 4.0 license​