Hacking Information

🔹 DHCP (Dynamic Host Configuration Protocol) in IT Forensics

📌 What DHCP Does
DHCP automatically assigns:
IP Address
MAC-to-IP mapping
Gateway & DNS server
Lease time
to devices when they connect to a network.

🕵️ How DHCP Helps in IT Forensics

1️⃣ Device Identification
Helps identify which device was using a specific IP address at a given time
Maps MAC Address ↔ IP Address ↔ Timestamp

2️⃣ User Activity Tracking
Useful when multiple users share the same network
Determines who joined the network and when

3️⃣ Incident Timeline Creation
DHCP lease logs help build a time-based forensic timeline

4️⃣ Insider Threat Investigation
Detects unauthorized or unknown devices connected to the network

🔹 DNS (Domain Name System) in IT Forensics

🕵️ How DNS Helps in IT Forensics

1️⃣ Malicious Domain Detection
Identifies connections to phishing, malware, or C2 servers

2️⃣ User Browsing Behavior Analysis
Shows which domains were accessed, even if content is encrypted

3️⃣ Malware Investigation
Malware often communicates using DNS
Suspicious or rare domains are strong indicators

4️⃣ Data Exfiltration Detection
DNS tunneling can be detected through abnormal DNS queries

🛡️ Why Both Are Critical in IT Forensics
DHCP answers:
👉 “Which device was on the network?”
DNS answers:
👉 “Where did that device communicate?”

Together, they provide complete visibility during investigations.
🌱 For Tech & Security Professionals

Strong forensic analysis is not only about tools —
it’s about understanding network fundamentals deeply.

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Hacking Information Gaurav Hanna

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