Implementing Conditional Access (Zero Trust Security)
🎯 Objective
To secure Microsoft 365 by applying Conditional Access policies based on user behavior and risk.
🧠 What is Conditional Access?
Conditional Access is a feature in Microsoft 365 that allows you to:
- Control access based on conditions
- Enforce MFA
- Block risky logins
👉 It follows the Zero Trust model → Never trust, always verify
🛠️ Prerequisites
- Microsoft 365 Admin access
- Entra ID P1/P2 license
🔐 Step 1: Open Conditional Access
- Go to: https://portal.azure.com
- Navigate to: Microsoft Entra ID → Security → Conditional Access
👥 Step 2: Create New Policy
- Click New Policy
- Name: Require-MFA-All-Users
🎯 Step 3: Assign Users
- Select:
- All Users (or specific group)
🌍 Step 4: Configure Conditions
- Locations:
- Include: Any location
- Exclude: Trusted locations (office IP)
🔑 Step 5: Grant Controls
- Select:
✔ Require Multi-Factor Authentication
🚀 Step 6: Enable Policy
- Set:
- Enable Policy → ON
- Click Create
🧪 Step 7: Test Policy
- Try login from:
- Different device
- Different network
✔ MFA should be triggered
💡 Real-World Scenario
- User logs in from unknown country
👉 Access blocked or MFA enforced
✅ Key Takeaways
✔ Zero Trust security model
✔ Context-based access
✔ Strong identity protection
✔ Prevents unauthorized access
🧠 Conclusion
Conditional Access is one of the most critical security features in Microsoft 365, enabling organizations to enforce strong access control policies.