blog_tech/i18n/en/docusaurus-plugin-content-docs/current/projets-openclassrooms/p03-architecture-reseau.md

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# Enterprise Network Design

## Context

Complete network architecture design for a startup (Hill Start), including physical and logical plans, IP addressing and security rules.

## Objectives

- Design a multi-VLAN network architecture adapted to business needs
- Develop IP addressing plans
- Define firewall filtering rules
- Produce complete technical documentation (TAD)

## Technologies Used

- **VLAN**: network segmentation
- **Firewall**: inter-VLAN filtering rules
- **Draw.io**: architecture diagrams
- **Subnetting**: IPv4 addressing plans

## Deliverables

<details>
<summary>Physical Diagram</summary>

![Physical network architecture diagram](/assets/projets-oc/p03/schemaphysique.jpg)

</details>

<details>
<summary>Logical Diagram</summary>

![Logical network architecture diagram](/assets/projets-oc/p03/schemalogique.jpg)

</details>

<details>
<summary>IP Addressing Plan (Excel)</summary>

The Excel file contains the complete IP addressing plan.

[Download addressing plan](/assets/projets-oc/p03/plan_adressagereseau.xlsx)

</details>

<details>
<summary>Firewall Rules (Excel)</summary>

The Excel file contains inter-VLAN firewall filtering rules.

[Download firewall rules](/assets/projets-oc/p03/regles_firewall.xlsx)

</details>

## Skills Acquired

- Organization network requirements analysis
- Segmented LAN architecture design
- Subnet calculation and addressing plans
- Standardized technical documentation writing
- Network security policy definition