# VPC - Manage Private Network on AWS

VPC is our own isolated network in the cloud.

![](https://2601183865-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8QpIzz6VwCOTMwaqKYa3%2Fuploads%2Fb7BqMfVD9FcPU6sozURz%2Fimage.png?alt=media\&token=c5961b23-f7d5-48b0-bee4-44a8613dedb2)

{% hint style="success" %}
Your resources always have to run in a VPC!
{% endhint %}

   ▪ We have a VPC for each Region 

   ▪ VPC spans all the AZ (Subnet) in that Region 

   ▪ Multiple VPCs in different Regions

   ▪ VPC is like a virtual representation of network infrastructure: Server setup, network configuration (router, firewall, DHCP etc.) moved to cloud

### SUBNET

Subnet is a range of IP addresses in your VPC 

It's like a private network inside a network:

![](https://2601183865-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8QpIzz6VwCOTMwaqKYa3%2Fuploads%2FUUV7Vf0trmyHshfbS6gG%2Fimage.png?alt=media\&token=76c4b81f-7ae4-4c20-8dfb-0ce034d079f1)

We have a subnet for each Availability Zone:

![](https://2601183865-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8QpIzz6VwCOTMwaqKYa3%2Fuploads%2FNTlk65psSY3xOHhwZI34%2Fimage.png?alt=media\&token=18dc150b-c178-4ef1-bf26-b9113f9e210a)

#### Private and Public Subnets

   ▪ Based on firewall configuration we can have a private and/or public subnet:

![](https://2601183865-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8QpIzz6VwCOTMwaqKYa3%2Fuploads%2F6N59t0GFWu6qSS5wihy9%2Fimage.png?alt=media\&token=4fad26f5-96c4-4552-8dac-456284875fc4)

   ▪ A subnet has a default range of internal(private) IP addresses 

   ▪ When you create a new resource like EC2 instance then an IP address is assigned within this subnet's IP range 

   ▪ For communication inside the VPC

![](https://2601183865-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8QpIzz6VwCOTMwaqKYa3%2Fuploads%2Fq8Ivt4DnBk7V9OVzdHuc%2Fimage.png?alt=media\&token=6cb1620d-10a5-4032-afb1-c4d360c3d47f)

### Internet Gateway

   ▪ Using an internet gateway you can connect the VPC or its subnets to the outside internet

### Security - Controlling Access

Of course, we need to secure our resources: 

   ▪ Control access to your VPC 

   ▪ Control access to your individual server instances

![](https://2601183865-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8QpIzz6VwCOTMwaqKYa3%2Fuploads%2F59iCkxqsCcipft4CXFwo%2Fimage.png?alt=media\&token=a659e37f-dc84-4b7a-aa2a-1fd445e5f741)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://asafahmadov.gitbook.io/cloud-and-devops/devops-bootcamp/all-about-aws-services/vpc-manage-private-network-on-aws.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.