Imagine your Azure network is a VIP club. NSGs are the bouncers at the door, deciding who gets in and who gets kicked to the curb 🛑 . No NSG? Well, now everyone is waltzing in like they own the place 🕺


Best practices for NSGs:
✅ Least privilege access – Only let in who actually belongs.
✅ Deny by default – If they’re not on the list, they’re not getting in.
✅ Monitor & log – Even bouncers check security cameras.

⏩ Use NSGs at the subnet level for broad, consistent security.
⏩ Use NIC-level NSGs only if you need extra security for specific resources.

💡 Too Many NSGs vs. Too Few – Striking the Right Balance! ⚖️

->Too Many NSGs? (🔧 Pain for Ops & Debugging)
Every subnet, every NIC, different rules everywhere = Chaos!
Hard to troubleshoot—traffic could be blocked at multiple levels.
📋 Operational nightmare—keeping track of overlapping rules is not fun.
✅ Best Practice: Use subnet-level NSGs as much as possible for consistency. Apply NIC-level NSGs only when absolutely needed.
->Too Few NSGs? (🔓 Security Risk!)
💀 One NSG for everything = overly broad permissions.
You might accidentally allow traffic you didn’t mean to.
No micro-segmentation = more risk if one VM gets compromised.
✅ Best Practice: At minimum, have NSGs at the subnet level. If a specific workload needs tighter security, add an NSG at the NIC level strategically.