Amazon Virtual Private Cloud - VPC 1
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The document discusses a presentation given to the AWS Riyadh User Group on networking concepts and Amazon VPC components. It provides an overview of VPCs and their usage, including how to create a VPC, subnets, route tables, internet gateways, NAT gateways, network access control lists, and security groups. It also describes common networking concepts like the OSI model, IPv4 vs IPv6, subnetting, and NAT. The presentation concludes with instructions for a hands-on lab to build a sample VPC configuration.
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Amazon Virtual Private Cloud - VPC 1
- 1. UpScale 13-10-2018 AWS Virtual Private Cloud (VPC #1) AWS Riyadh User Group Ahmad ElGohary12 @aalgohary85 ELGOHARY AHMAD [email protected]
- 2. Agenda • AWS Saudi User Group • Past and Coming Topics • Networking Concepts • AWS VPC Components • LAB
- 3. AWS Riyadh User Group • AWS Registered User Group in Riyadh, Saudi Arabia • Founded by Ahmed Aziz • Public Group • 352 Members • Connect all AWS Geeks
- 4. Past and Coming Topics • Storage • S3 • Compute • EC2 • Auto Scaling • Networking • VPC Session 1 • VPC Session 2 • Route 53 • API Gateway
- 5. Past and Coming Topics Cont’d • Databases • RDS • Dynamo DB • ElastiCache • Application Integration • SNS • SQS • SWF • Management Tools • Cloud Formation • Cloud Trail vs Cloud Watch
- 6. Past and Coming Topics Cont’d • Add-Ons • Lambda • Cost Optimization • Well Architected Framework • Having Fun with Alexa • Chatbot • Machine Learning
- 8. 7-Layer OSI Model Cont’d
- 9. 7-Layer OSI Model Cont’d
- 10. IPv4 vs IPv6
- 11. Subnetting
- 13. NAT and PAT • Network address translation (NAT) is a method of remapping one IP address space into another by modifying network address information in the IP header of packets while they are in transit across a traffic routing device.
- 14. What is Amazon VPC? • Amazon VPC is a logically isolated section of AWS cloud where you can launch AWS resources in a virtual network that you define. • Think of a VPC as a virtual datacenter in the cloud.
- 15. Why do we need a VPC? • Control over organization resources • Control of security • Control of traffic between our services • Control to keep differing architectures completely separate from each other
- 16. AWS Default VPC vs Our VPCs • CIDR 172.31.0.0/16. • Reserved by AWS as a default VPC for any account. • Our VPC • Stick to private network ranges defined in RFC1918 ranges • 10.0.0.0/8 • 172.16.0.0/12 • 192.168.0.0/16
- 17. VPC Creation • IPv4: Block sizes must be between /16 and /28 • IPv6: – Amazon assigns /56 IPv6 CIDR block. – You can not choose the range for IPv6 CIDR block. • Tenancy: – Dedicated: Instances launched in this VPC are dedicated tenancy instances regardless of the tenancy attributes specified at launch. – Default: Instances launched in this VPC are use the tenancy attribute specified at launch.
- 19. Subnet Creation • Subnet CIDR block sizes must be between /16 and /28. • Subnet size can be the same size as VPC or subset. • For each subnet, AWS reserves 5 IPs, the first 4 and the final. • The 3rd IP address is reserved for a AWS DNS server that handles all of this IP address assignment.
- 21. Subnet Auto Assign IP
- 22. Route Table • A route table contains a set of rules, called routes, that are used to determine where network traffic is directed. • Each subnet in the VPC must be associated with a route table. • VPC automatically comes with a main route table that you can modify. • By default any new subnet is associated with the main route table. • A subnet can only be associated with one route table.
- 25. Internet Gateway • An internet gateway is a virtual router that connects a VPC to the internet. • Private subnets: It can not connect to the internet. • Public subnets: It can connect to the internet. • A subnet with a Route Table that's not connected to an internet gateway is private. • A subnet that's associated with a Route Table that's connected to an internet gateway is public.
- 27. Attaching IGW to VPC
- 29. NAT Gateways • You can use a network address translation (NAT) gateway to enable instances in a private subnet to connect to the internet or other AWS services, but prevent the internet from initiating a connection with those instances. • NAT GW is created in the public subnet. It requires Elastic IP. • An Elastic IP address is a public IPv4 address, which is reachable from the internet. • A route to NAT GW is added in the private route table.
- 30. NAT GW Creation
- 31. Network Access Control Lists • A network ACL is an optional layer of security that acts as a firewall for controlling traffic in and out of a subnet. • A default ACL is created for each new VPC that allows traffic in and out by default. • A Network ACL can apply to many subnets, but a subnet can only belong to one Network ACL. • Network ACLs are stateless.
- 33. Network ACL Inbound Rules
- 34. Network ACL Outbound Rules
- 35. Network ACL Subnet Associations
- 36. Security Groups • A security group acts as a virtual firewall for your instance to control inbound and outbound traffic. • When you launch an instance in a VPC, you can assign up to five security groups to the instance. • Security Groups are Stateful.
- 38. Security Group Inbound Rules
- 39. Security Group Outbound Rules
- 40. LAB: Building Your First Amazon VPC • https://qwiklabs.com/focuses/359?parent=catalog • Create an Amazon VPC • Create public and private subnets • Create an Internet Gateway • Create a Route Table and add a route to the Internet • Create a security group for your web server to only allow HTTP traffic • Create a security group for your MySQL RDS instance to only allow MySQL traffic from your public subnets • Deploy a web server and a MySQL RDS instance • Configure your application to connect to your MySQL RDS instance
- 41. References • https://docs.aws.amazon.com/ • https://acloud.guru/ • https://start.jcolemorrison.com/aws-vpc-core- concepts-analogy-guide/ • https://qwiklabs.com/ • http://jodies.de/ipcalc • https://www.ultratools.com/tools/ipv6CIDRToRange
- 42. Questions
- 43. See You Next Meetup AWS Riyadh User Group
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