Tech Stack

29/10/2026

🏃 Keep Going | Motivation & Success Mindset 🚀

Difficult moments are part of every journey. Challenges test your patience, strength, and determination — but consistent effort helps you move forward.

Keep pushing, stay focused, and never stop improving.

28/10/2026

📂 DFS Namespace | Windows Server Explained

DFS Namespace (DFS-N) allows you to create a single logical path to access shared folders located on multiple servers.

Instead of users accessing:

\\Server01\Finance
\\Server02\HR

You can provide one common namespace:

\\Company\Shares

Users can access folders through the common path without needing to know which physical server hosts the data.

🔹 Key Benefits:
✅ Single, easy-to-remember path
✅ Organizes multiple file shares
✅ Provides a consistent user experience
✅ Supports multiple namespace servers
✅ Can work with DFS Replication (DFS-R) for data replication

Example

User → \\Company\Shares\Finance → Server01

User → \\Company\Shares\HR → Server02

💡 Remember:
DFS Namespace = One logical path → Multiple file servers

DFS-N = Namespace
DFS-R = Replication

27/10/2026

📁 FSRM Explained | File Server Resource Manager

FSRM (File Server Resource Manager) is a Windows Server role service used to manage, classify, and control data stored on file servers.

🔹 Key Features:
✅ Quota Management – Limit the amount of storage users or folders can consume
✅ File Screening – Block or monitor specific file types
✅ Storage Reports – Generate reports about disk and file usage
✅ File Classification – Classify files based on business requirements
✅ File Management Tasks – Automate actions on files

🔹 Example:

You can create a file screen to prevent users from storing certain file types such as .mp3 or .exe in a specific folder.

💡 Remember:
FSRM = Control + Monitor + Manage Files & Storage

14/10/2026

12/10/2026

📂 DFS Explained | Distributed File System in Windows Server

DFS (Distributed File System) helps organizations provide users with easier and centralized access to files and folders across multiple servers.

🔹 DFS has two main components:

1️⃣ DFS Namespace (DFS-N)
✅ Provides a single logical path
✅ Example: \\Company\Shares
✅ Can organize shares from multiple file servers

2️⃣ DFS Replication (DFS-R)
✅ Replicates folders between servers
✅ Helps maintain copies of data across locations
✅ Uses an efficient replication mechanism to synchronize changes

Simple Flow

User → \\Company\Shares → DFS Namespace → File Server

💡 Remember:

DFS-N = Organize & Access 📂
DFS-R = Replicate & Synchronize 🔄

12/10/2026

🔐 AGDLP in Windows DFS — Group-Based File Access Explained

Managing permissions for hundreds of users and folders?

Don’t assign permissions user by user.

Use:

AGDLP

Accounts → Global Groups → Domain Local Groups → Permissions

👥 Example

Ravi
↓
GG-Finance
↓
DL-Finance-Modify
↓
Finance Folder

With DFS:

\\company.local\Files\Finance

The overall flow becomes:

User → Global Group → Domain Local Group → DFS → File Server → Share + NTFS

🧠 Remember:

AGDLP = Who gets access?

DFS = Where do users go?

Share + NTFS = What can they do?

For Access Denied, check:

🔹 Group membership
🔹 Group nesting
🔹 Domain Local permissions
🔹 DFS folder target
🔹 Share permissions
🔹 NTFS permissions
🔹 User security token

Useful command:

whoami /groups

And the core formula:

Account → Global Group → Domain Local Group → Permission

Follow Tech Stack for practical Active Directory, Windows Server, DFS, NTFS Permissions, Intune, Entra ID, VMware and Networking content.

28/09/2026

📡 ICMP Explained | Internet Control Message Protocol 🚀

ICMP (Internet Control Message Protocol) is a network-layer protocol used to send error messages, diagnostic information, and connectivity status between network devices.

It is commonly used by tools such as Ping and Tracert for network troubleshooting.

🔹 What is ICMP Used For?

✅ Test network connectivity
✅ Identify unreachable devices
✅ Report network errors
✅ Troubleshoot routing problems
✅ Check packet loss and connectivity
✅ Help identify network paths
✅ Diagnose network communication issues

🔍 Common ICMP Message Types

🔹 Echo Request – Sent when you run Ping
🔹 Echo Reply – Response received from the destination
🔹 Destination Unreachable – Destination or service cannot be reached
🔹 Time Exceeded – TTL expires, commonly used by Tracert

🛠️ Useful Commands

Test connectivity:

ping 8.8.8.8

Test a hostname:

ping google.com

Trace the network path:

tracert 8.8.8.8

Continuous Ping:

ping 8.8.8.8 -t

Stop Continuous Ping:

Ctrl + C

⚠️ Important Point

ICMP is not TCP or UDP, so it does not use TCP/UDP port numbers.

Also, a failed Ping does not always mean the destination is down. ICMP may be blocked by a firewall or network device.

🧠 Simple Example

Your PC
↓
ICMP Echo Request
↓
Router / Network
↓
Destination
↓
ICMP Echo Reply
↓
Your PC

⭐ Remember

ICMP = Error Reporting + Connectivity Testing + Network Diagnostics

Ping → ICMP Echo Request/Reply

Tracert → Uses ICMP responses to help identify the network path

Follow for more Networking, Active Directory, Windows Server, PowerShell, and IT troubleshooting tutorials! 🔥

28/09/2026

🔐 How Do AD Security Groups Control File Access with DFS?

A user opens:

\\company.local\Files\Finance

But gets:

❌ Access Denied

Here’s the basic flow:

User
↓
AD Security Group
↓
DFS Namespace
↓
DFS Referral
↓
File Server
↓
Share Permissions
↓
NTFS Permissions
↓
File Access

👥 Example

Ravi → GG-Finance → Finance Folder

Instead of assigning permissions directly to Ravi, assign permissions to the security group.

For different access levels:

GG-Finance-Read → Read

GG-Finance-Modify → Modify

🧩 AGDLP

Accounts → Global Groups → Domain Local Groups → Permissions

Example:

Ravi → GG-Finance → DL-Finance-Modify → Finance Folder

🔍 Access Denied? Check:

🔹 DFS path
🔹 Actual folder target
🔹 AD group membership
🔹 whoami /groups
🔹 Share permissions
🔹 NTFS permissions
🔹 Permission inheritance
🔹 Effective Access

And remember:

DFS gives the path.
AD groups organize access.
Share + NTFS permissions enforce access.

Follow Tech Stack for practical Active Directory, Windows Server, DFS, NTFS Permissions, Intune, Entra ID, VMware and Networking content.

27/09/2026

📂 How do users access shared folders through DFS?

Instead of remembering:

\\FS01\Finance
\\FS02\HR
\\FS03\IT

Users can use one logical path:

\\company.local\Files

🔧 DFS Flow

User
↓
DFS Namespace
↓
DFS Referral
↓
Actual Folder Target
↓
Share + NTFS Permissions
↓
Files

🧠 Remember:

DFS Namespace = Logical access path + referrals

DFS Replication = File replication

They are not the same thing.

If DFS isn’t working, check:

🔹 DNS
🔹 AD connectivity
🔹 DFS Namespace
🔹 DFS Referral
🔹 SMB / Port 445
🔹 Share permissions
🔹 NTFS permissions

Useful commands:

nslookup company.local

Test-NetConnection FS01 -Port 445

And remember:

DFS gives you the path. Permissions determine what you can access.

Follow Tech Stack for practical Windows Server, Active Directory, DFS, NTFS Permissions, Intune, Entra ID, VMware and Networking content.

27/09/2026

HDMI Cable: STOP MOVING THE LAPTOP! I’m already stretched to my limit! 🔌😤

HDMI cable stretched behind the desk: STOP MOVING THE LAPTOP! I’m already stretched to my limit! One more awkward pull and I’m out of the picture. Cable length is not infinite! 🔌😂 We’ve all been there—shifting the laptop “just an inch” until the cable is basically doing a plank. Tag someone whose desk setup is one tug away from disaster! 💻🖥️