AWS networking fundamentals - SVC303 - Santa Clara AWS Summit

3. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Let’stakeacloserlook AWS Region Availability zone 2Availability zone 1 Private subnet Private subnet Public subnet Public subnet VPC CIDR 10.1.0.0/16 + Expand + IPv6 Amazon VPC Amazon EC2 Instance B 10.1.1.11/24 Instance A 10.1.0.11/24 Instance C 10.1.2.11/24 Instance D 10.1.3.11/24 The Internet Amazon S3 Amazon DynamoDB AWS Lambda Amazon SQS Amazon SNS AWS IOT

8. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Choosing an IP address range for your VPC 172.31.0.0/16 Recommended: RFC1918 range Recommended: /16 (65,536 addresses) Avoid ranges that overlap with other networks to which you might connect

10. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT VPC subnetsand Availability Zones 172.31.0.0/16 Availability Zone Availability Zone Availability Zone VPC subnet VPC subnet VPC subnet 172.31.0.0/24 172.31.1.0/24 172.31.2.0/24 eu-west-1a eu-west-1b eu-west-1c

11. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT IPv6 in your VPC • Can have a dual-stack VPC by adding an IPv6 CIDR • Fixed sizes for VPC and subnets: • /56 VPC (4,722,366,482,869,645,213,696 addresses) • /64 subnets (18,446,744,073,709,551,616 addresses)

12. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT VPC subnetsand Availability Zones 172.31.0.0/16 Availability Zone Availability Zone Availability Zone VPC subnet VPC subnet VPC subnet 172.31.0.0/24 172.31.1.0/24 172.31.2.0/24 eu-west-1a eu-west-1b eu-west-1c 2600:1f16:14d:6300::/56 2600:1f16:14d:6300::/64 2600:1f16:14d:6301::/64 2600:1f16:14d:6302::/64 + Expand

14. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Routing in your VPC • Route tables contain rules for which packets go where • Your VPC has a default route table • But, you can create and assign different route tables to different subnets

21. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT “MyWebServers” security group “MyBackends” security group Allow only “MyWebServers” Security groups follow applicationstructure Web Web Web Web App App App IGW

25. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Security groups vs. NACLs Security group Network ACL Operates at instance level Operates at subnet level Supports allow rules only Supports allow and deny rules Is stateful: return traffic is automatically allowed regardless of any rules Is stateless:return traffic mustbe explicitly allowed by rules All rules evaluated before deciding whether to allow traffic Rules evaluated in order when deciding whether to allow traffic Applies only to instances explicitly associated with the security group Automatically applies to all instances launched into associated subnets Doesn’t filter traffic to or from link-local addresses (169.254.0.0/16)or AWS-reserved IPv4 addresses; these are the first four IPv4 addresses of the subnet (including the AmazonVPC DNS server)

27. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT VPC Flow Logs AZ 2AZ 1 • Visibility • Troubleshooting • Analyze traffic Amazon S3 Amazon CloudWatch Logs VPC Flow Logs

33. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT NAT Instance B 10.1.1.11/24 Instance BNAT-GW NAT-GW 0.0.0.0/0 AWS Region Availability Zone 2Availability Zone 1 Privatesubnet The Internet Privatesubnet Public subnet Instance A Public subnet Amazon S3 VPC CIDR 10.1.0.0/16 10.1.0.11/24 Instance C 10.1.2.11/24 Instance D 10.1.3.11/24 + Expand + IPv6 IGW 10.1.0.0/16 Local 0.0.0.0/0 IGW Destination Target 10.1.0.0/16 Local Destination Target EIP - 10.1.0.11 : 54.23.12.43 EIP - 10.1.1.11 : 54.19.12.23 Let’stakeacloserlook Amazon DynamoDB AWS Lambda Amazon SQS Amazon SNS AWS IOT

35. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT VPC peering • Full private IP connectivity between two VPCs • Can peer VPCs across regions • VPCs can be in different accounts • VPC CIDR ranges must not overlap 10.0.0.0/16 10.2.0.0/16 10.1.0.0/16 10.3.0.0/16

37. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Establish a VPC peering: Accept request Step 1 Initiate peering request Step 2 Accept peering request 172.31.0.0/16 10.55.0.0/16

38. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Establish a VPC peering: Create a route Step 1 Initiate peering request Step 2 Accept peering request Step 3 172.31.0.0/16 10.55.0.0/16 Traffic destined for the peered VPC should go to the peering

40. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT VPNconnectionCustomer gateway Amazon VPC Amazon VPC AWS Direct Connect Gateway VPCpeering VPCpeering VPCpeering Amazon VPC Amazon VPCVPC peering VPN connection VPNconnection VPCpeering Before TransitGateway …

48. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Transit Gateway Amazon VPCAmazon VPC Amazon VPCAmazon VPC Customer gateway VPN connection AWS Direct Connect Gateway (Coming Soon) With Transit Gateway …

49. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT B Local 0.0.0.0/0 Destination Target A B TGW C TGW 1 2 3 4 TGW Route Table (s) VPC A : Attachment 1 VPC B : Attachment 2 VPC C : Attachment 3 On-prem : VPN 4 RT1 RT2 On-Premises With Transit Gateway …

50. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Attachment The connection from a Amazon VPC and VPN to a TGW Association The route table used to route packets coming from an attachment (from an Amazon VPC and VPN) Propagation The route table where the attachment’s routes are installed

51. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama TGW X Y TGW Route Table (s) Associations RT1 Z Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 Barry from Z Barry from Z Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via Z 10.1.0.0/16 Local 0.0.0.0/0 TGW Destination Target 10.1.0.0/16 Local 0.0.0.0/0 IGW Destination Target 10.0.0.0/8 TGW

52. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama After: AWS Transit Gateway (TGW) TGW X Y TGW Route Table (s) Associations RT1 Z Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 Barry from Z Barry from Z Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via Z 10.8.0.0/16 10.9.0.0/16 10.8.0.0/16 via X 10.9.0.0/16 via X

53. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama TGW X Y TGW Route Table (s) Associations RT1 Z Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 Barry from Z Barry from Z Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via Z 10.8.0.0/16 10.9.0.0/16 10.8.0.0/16 via X 10.9.0.0/16 via X Propagation turned off, you can still statically configure routes

54. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama TGW X Y TGW Route Table (s) Z 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 O n - P r e m i s e s Q RT1 RT2 RT3 Associations RT1 Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X On-premfromQ Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 172.16.0.0/16 via Q Associations RT2 Propagations On-premfromQ Barry from ZBarry from Z Routes 172.16.0.0/16 via Q 10.3.0.0/16 via X Associations RT3 Propagations On-premfromQ Llama from X On-premfromQ Pegasus from Y Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via ZBarry from Z 172.16.0.0/16 172.16.0.0/16 via Q

55. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama TGW X Y TGW Route Table (s) Z 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 O n - P r e m i s e s Q RT1 RT2 RT3 Associations RT1 Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X On-premfromQ Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 172.16.0.0/16 via Q Associations RT2 Propagations On-premfromQ Barry from ZBarry from Z Routes 172.16.0.0/16 via Q 10.3.0.0/16 via X Associations RT3 Propagations On-premfromQ Llama from X On-premfromQ Pegasus from Y Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via ZBarry from Z 172.16.0.0/16 172.16.0.0/16 via Q Packet SRCLlama DSTOn-prem

56. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama TGW X Y TGW Route Table (s) Z 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 O n - P r e m i s e s Q RT1 RT2 RT3 Associations RT1 Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X On-premfromQ Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 172.16.0.0/16 via Q Associations RT2 Propagations On-premfromQ Barry from ZBarry from Z Routes 172.16.0.0/16 via Q 10.3.0.0/16 via X Associations RT3 Propagations On-premfromQ Llama from X On-premfromQ Pegasus from Y Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via ZBarry from Z 172.16.0.0/16 172.16.0.0/16 via Q Packet SRCLlama DSTOn-prem

57. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama TGW X Y TGW Route Table (s) Z 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 O n - P r e m i s e s Q RT1 RT2 RT3 Associations RT1 Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X On-premfromQ Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 172.16.0.0/16 via Q Associations RT2 Propagations On-premfromQ Barry from ZBarry from Z Routes 172.16.0.0/16 via Q 10.3.0.0/16 via X Associations RT3 Propagations On-premfromQ Llama from X On-premfromQ Pegasus from Y Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via ZBarry from Z 172.16.0.0/16 172.16.0.0/16 via Q Packet SRC:Barry DSTOn-prem

58. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Llama TGW X Y TGW Route Table (s) Z 10.1.0.0/16 Pegasus 10.2.0.0/16 Barry 10.3.0.0/16 O n - P r e m i s e s Q RT1 RT2 RT3 Associations RT1 Propagations Pegasus from Y Llama from X Pegasus from Y Llama from X On-premfromQ Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 172.16.0.0/16 via Q Associations RT2 Propagations On-premfromQ Barry from ZBarry from Z Routes 172.16.0.0/16 via Q 10.3.0.0/16 via X Associations RT3 Propagations On-premfromQ Llama from X On-premfromQ Pegasus from Y Routes 10.2.0.0/16 via Y 10.1.0.0/16 via X 10.3.0.0/16 via ZBarry from Z 172.16.0.0/16 172.16.0.0/16 via Q Packet SRCBarry DSTOn-prem

63. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Maximumbandwidth per VPN connection 1.25Gbps *With ECMP, you can distribute traffic over multiple tunnels, e.g. 8 tunnels = 10 Gbps *

67. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT On premises IPsec Tunnel 1 - Primary IPsec Tunnel 2- Secondary Virtual private gateway VGW IPsec tunnel over the internet Customer gateway CGW The internet

68. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT On premises IPsec Tunnel 1 - Primary IPsec Tunnel 2- Secondary IPsec tunnel over the internet The internet Transit GW Customer gateway CGW

69. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Attachment to Amazon VPC TLS-based tunnel over the internet User with Open VPN Client Client VPN Endpoint Client The internet On premises Amazon S3 Amazon DynamoDB

71. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Customeror partner cage Service Provider Network AWS Direct Connect—wha t’s that? AWS Region On premises AWS Direct Connect location AWS cage Cross Connect 10.0.0.0/16 192.168.0.0/16 Private VIF Public VIF VGW

72. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Customeror partner cage Service Provider Network AWS Direct Connect—wha t’s that? AWS Region On premises AWS Direct Connect location AWS cage Cross Connect 10.0.0.0/16 192.168.0.0/16 Private VIF Public VIF 10.2.0.0/16 VGW VGW Private VIF

73. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Customeror partner cage Service Provider Network AWS Direct Connect Gateway AWS Region On premises AWS Direct Connect location AWS cage Cross Connect 10.0.0.0/16 192.168.0.0/16 Private VIF 10.2.0.0/16 VGW VGW O n e P r i v a t e V I F → M a n y V P C s AWS Direct Connect Gateway

74. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Customeror partner cage Service Provider Network AWS Direct Connect Gateway AWS Region 1 On premises AWS Direct Connect location AWS cage Cross Connect 10.0.0.0/16 192.168.0.0/16 Private VIF 10.2.0.0/16 VGW VGW O n e P r i v a t e V I F → M a n y V P C s AWS Region 2 AWS Direct Connect Gateway

75. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Customeror partner cage Service Provider Network AWS Direct Connect Gateway AWS Account 1 On premises AWS Direct Connect location AWS cage Cross Connect 10.0.0.0/16 192.168.0.0/16 Private VIF 10.2.0.0/16 VGW VGW O n e P r i v a t e V I F → M a n y V P C s AWS Account 2 AWS Direct Connect Gateway Multi Account DX Gateway NEW

80. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT L l a m a 10.3.0.0/16 Pe g a s u s 10.2.0.0/16 B a r r y 10.1.0.0/16 I g u a n a 10.6.0.0/16 S t e v e 10.5.0.0/16 S ue 10.4.0.0/16 AWS Lambda Amazon EC2 Amazon RedshiftAmazon RDS Amazon EC2 Amazon EC2 Prod 1Dev Test Prod2 Prod 3 Prod 4

82. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT L l a m a 10.3.0.0/16 Pe g a s u s 10.2.0.0/16 B a r r y 10.1.0.0/16 I g u a n a 10.6.0.0/16 S t e v e 10.5.0.0/16 S ue 10.4.0.0/16 AWS Lambda Amazon EC2 Amazon RedshiftAmazon RDS Amazon EC2 Amazon EC2 Prod 1Dev Test Prod2 Prod 3 Prod 4

83. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT L l a m aPe g a s u s 10.2.0.0/16 B a r r y 10.1.0.0/16 I g u a n aS t e v eS ue AWS Lambda Amazon EC2 Amazon RedshiftAmazon RDS Amazon EC2 Amazon EC2 Prod 1Dev Test Prod2 Prod 3 Prod 4 Owner Participant Owner Participant Participant Participant

84. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Amazon VPC owners are responsible for creating, managing, and deleting all VPC level entities. Amazon VPC owners cannot modify or delete participant resources. Amazon VPC Owner

85. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Participants that are in a shared Amazon VPC are responsible for the creation, management and deletion of their resources including Amazon Elastic Compute Cloud (Amazon EC2) instances, Amazon Relational Database Service (Amazon RDS) databases, and load balancers. However, they cannot modify any Amazon VPC-level entities including route tables, network ACLs, or subnets (Or view / modify resources belonging to other participants). Amazon VPC Participant

87. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Why use Amazon VPC sharing? Preserve IP space U se fewer IPv4 CIDRs Interconnectivity No VPC Peering required Bi l l i n g a n d S e c u r i t y Co n t i n u e t o e n j o y se g r e gat i o n w i t h m u l t i p l e a c c o u n t s S e p a ra t i o n o f d u t i e s c e n t ral t e am c an c r e at e an d m an ag e y o u r A m a zo n VP C S a m e A Z c o st f o r d a t a t ra n sfe r i s n i l !

89. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT NAT Instance B 10.1.1.11/24 Instance BNAT-GW NAT-GW 0.0.0.0/0 AWS Region Availability Zone 2Availability Zone 1 Privatesubnet The internet Privatesubnet Public subnet Instance A Public subnet Amazon S3 VPC CIDR 10.1.0.0/16 10.1.0.11/24 Instance C 10.1.2.11/24 Instance D 10.1.3.11/24 + Expand + IPv6 IGWVPCE 10.1.0.0/16 Local 0.0.0.0/0 IGW S3.prefix.list VPCE-123 Destination Target 10.1.0.0/16 Local DDB.prefix.list VPCE-123 Destination Target EIP - 10.1.0.11 : 54.23.12.43 EIP - 10.1.1.11 : 54.19.12.23 Amazon DynamoDB VPCE = Virtual PrivateEndpoint (Type: Gateway)

91. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT Amazon API Gateway AWS CloudFormation Amazon CloudWatch Amazon CloudWatch Events Amazon CloudWatch Logs AWS CodeBuild AWS Config Amazon EC2 API Elastic Load Balancing API AWS Key Management Service Amazon KinesisData Streams Amazon SageMaker Runtime AWS Secrets Manager AWS Security Token Service AWS Service Catalog Amazon SNS AWS Systems Manager NAT Instance B 10.1.1.11/24 NAT-GW AWS Region Availability Zone 2Availability Zone 1 Privatesubnet Privatesubnet Public subnet Instance A Public subnet VPC CIDR 10.1.0.0/16 10.1.0.11/24 Instance C 10.1.2.11/24 Instance D 10.1.3.11/24 + Expand + IPv6 22+ services now supported over AWS PrivateLink ec2.eu-west-1.amazonaws.com ENI1: 10.1.0.15 ENI2: 10.1.1.23 ec2.eu-west-1.amazonaws.com ENI1: 10.1.0.15 ENI2: 10.1.1.23 AWS PrivateLinkcan reach public services, privately from yourVPC No routes needed! (almost) 10.1.0.0/16 Local Destination Target 10.1.0.0/16 Local Destination Target + More

94. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT And now AWS PrivateLink for service providers Customer VPC Service Provider VPC Application, e.g. SaaS NLB AWS PrivateLink VPC Endpoint: vpce-2222.foo.amazon.com

96. © 2019, Amazon Web Services, Inc. orits affiliates. All rights reserved. SU MMIT NAT Instance B 10.1.1.11/24 Instance BNAT-GW NAT-GW 0.0.0.0/0 AWS Region Availability Zone 2Availability Zone 1 Privatesubnet VGW VPC Peering VPC Flow Logs VPN The internet Privatesubnet Public subnet Instance A Public subnet Amazon S3 VPC CIDR 10.1.0.0/16 10.1.0.11/24 Instance C 10.1.2.11/24 Instance D 10.1.3.11/24 DXGW + Expand + IPv6 IGWVPCE 10.1.0.0/16 Local 0.0.0.0/0 IGW S3.prefix.list VPCE-123 On-premises VGW VPC-B PCX-123 Destination Target Intra or Inter region 10.1.0.0/16 Local S3.prefix.list VPCE-123 On-premises VGW VPC-B PCX-123 Destination Target AWS PrivateLink Service Provider VPC NLB On premises VPC-B EIP - 10.1.0.11 : 54.23.12.43 EIP - 10.1.1.11 : 54.19.12.23 Let’stakeacloserlook Amazon DynamoDB AWS Lambda AWS Direct Connect Amazon SQS Amazon SNS AWS IOT Amazon CloudWatch AWS PrivateLink Transit GW Onpremises AWS PrivateLink Enabled Services Other Routes TGW Other Routes TGW Amazon S3

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