SANS Institute Cheat Sheets For Cybersecurity Professionals

The SANS Institute maintains a comprehensive collection of cheat sheets covering critical cybersecurity topics. These resources are invaluable for IT professionals, defenders, and offensive security practitioners. You can access them here: SANS Cheat Sheets.

Key Topics Covered:

General IT Security
Digital Forensics and Incident Response (DFIR)
Offensive Operations (Penetration Testing, Red Teaming)
Cloud Security (AWS, Azure, GCP)
Industrial Control Systems (ICS) Security
Cybersecurity Leadership & Management
All-Around Defender Primers

You Should Know:

1. Essential Linux Commands for Cybersecurity

 Network Analysis 
tcpdump -i eth0 -w capture.pcap 
tshark -r capture.pcap -Y "http.request"

Log Analysis 
grep "Failed password" /var/log/auth.log 
journalctl -u ssh --no-pager | grep "Failed"

File Integrity Checking 
md5sum /etc/passwd 
sha256sum /bin/bash

Process Monitoring 
ps aux | grep "suspicious_process" 
lsof -i :22

2. Windows Security Commands

 Check Open Ports 
netstat -ano | findstr LISTENING

Audit Logon Events 
Get-EventLog -LogName Security -InstanceId 4624,4625 -Newest 10

Check Scheduled Tasks 
Get-ScheduledTask | Where-Object { $_.State -ne "Disabled" }

Disable Suspicious Service 
Stop-Service -Name "MaliciousSvc" 
Set-Service -Name "MaliciousSvc" -StartupType Disabled

3. Cloud Security (AWS CLI)

 Check S3 Bucket Permissions 
aws s3api get-bucket-acl --bucket my-bucket

List Unencrypted EBS Volumes 
aws ec2 describe-volumes --query 'Volumes[?Encrypted==<code>false</code>].VolumeId'

Audit IAM Policies 
aws iam list-policies --scope Local

4. Incident Response (DFIR)

 Memory Dump (Linux) 
sudo dd if=/dev/mem of=memory_dump.bin

Disk Imaging 
dcfldd if=/dev/sda of=evidence.img hash=md5,sha256

What Undercode Say:

The SANS cheat sheets are a goldmine for cybersecurity professionals. Whether you’re into penetration testing, DFIR, or cloud security, these guides provide quick-reference commands and methodologies.

Pro Tip: Bookmark the link and integrate these commands into your daily workflows. Automation (via Bash/Python) can further enhance efficiency.