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Network ACL

Overview
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Network ACL — Quick Facts

📌

Property: Detail

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Topic: Network ACL (Access Control List)

Category: Network Security / Infrastructure

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Type: Traffic Filtering Mechanism

Topic 1

Lead

🌐 Network ACL (Access Control List) ek set of rules hai jo network traffic ko allow ya deny…
Topic 2

Infobox

📡 | Property | Detail | |---|---| | Topic | Network ACL (Access Control List) | | Category…
Topic 3

1. ACL Types Overview

🔗 Network ACLs ke multiple types hain. Har type ka apna scope aur matching criteria hai. |…
Topic 4

2. How Network ACLs Work

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Rule Number — priority define…

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Protocol — TCP, UDP, ICMP, ya all

Port Range — destination port ya…

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Source — source IP address ya CIDR…

Topic 5

3. Stateless vs Stateful

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Har packet independently evaluate…

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Return traffic automatically…

Agar inbound HTTP (port 80) allow…

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Response ko wapas jaane ke liye…

Topic 6
🔧 📊 🔬

4. ACL Rule Structure

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Rules ko 10 ya 100 ke increments…

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Gaps rakhne se baad me beech me…

Lower numbers pehle evaluate hote…

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Deny rules ko specific allow rules…

Topic 7
📥 ⚙️ 🔬 💡

5. Cloud Network ACLs

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Har VPC ke saath ek default NACL…

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Custom NACLs create kar sakte hain…

Har subnet exactly ek NACL se…

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Ek NACL multiple subnets se…

Topic 8
📥 ⚙️ 🔬 💡

6. Traffic Filtering Flow Diagram

🏗️ `mermaid graph TB subgraph "Internet" CLIENT[Client Request<br/>HTTP/HTTPS] end subgraph…
Topic 9

7. On-Premise ACLs

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Interface level par apply hoti…

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Packet forwarding decisions ke…

Standard ACLs source IP ke basis…

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Extended ACLs source, destination,…

Topic 10

8. NACL vs Security Group

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Security Groups — primary defense,…

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Network ACLs — additional defense…

Best practice — dono use karo…

Topic 11
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9. Best Practices

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Least Privilege — sirf zaroori…

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Explicit Deny before Implicit —…

Ephemeral Ports — outbound rules…

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Increment Strategy — rules ko…

Topic 12
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10. Common Use Cases

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Public subnet ko specific ports…

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Database subnet ko sirf…

Management subnet ko restricted IP…

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PCI-DSS ke liye cardholder data…

Topic 13
📥 📥 🧠 🔬 💡 🎯

11. Challenges

| # | Challenge | Description | |---|---|---| | 1 | Stateless Complexity | Return traffic…
Topic 14
📥 ⚙️ 🔬 💡

12. Benefits

🔧 | # | Benefit | Description | |---|---|---| | 1 | Defense in Depth | Security Groups ke…
Topic 15
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13. Glossary

💻 | # | Term | Definition | |---|---|---| | 1 | ACL | Access Control List — rules ka set jo…
Topic 16
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16. Disclaimer

🏗️ Yeh article sirf educational aur informational purposes ke liye hai. Network ACL…
Comparison

8. NACL vs Security Group

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Level: Subnet level

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State: Stateless

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Return Traffic: Explicitly allow karna…

Diagram
📥 ⚙️ 🔬 💡

Visual Flow

📊 Diagram visualization — details in narration
Related Topics

See Also

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Network — Computer networking…

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Network_address_translation — NAT…

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Firewall — Network firewall…

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VPC — Virtual Private Cloud…

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Subnet — Subnetting concepts

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Security_group — Instance-level…

Quick Quiz
🧠 QUIZ TIME

Quiz — Question 1

Network ACL ka 'Topic' kya hai?

Complete! 🎉
COMPLETE

Network ACL Complete!

Aliens Wiki · HIEN · Cinematic Knowledge

Network ACL Complete

➡️

Network — Computer networking…

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