- The requires only single VPC for testing purposes
- Aviatrix ingress filtering gateway (aka public subnet filter PSF) is deployed in the public subnet
- External ALB deployed in the same public subnet as AVX-PSF-GW
- WordPress App was launched in the non-routable private subnet (vpc2-subnet1)
- Bonus testing with Internal ALB
- Test Windows EC2 was launched in a private subnet (vpc2-subnet2).
- A pubic IP address was assigned so I can RDP into it and test the internal ALB functionality
- The 0/0 route table pointed to eni of PSF-GW which acts as a NAT-GW for not only to bring the traffic in but also to send out towards the public Internet
Following is the final topology
Deployment Screen Shots with External ALB
Aviatrix PSF GW Deployment
General Info Gateway name: aws-psfgw1-vpc2-uswest2 Cloud type: 1 Account name: shahzad-aws Region: us-west-2 Gateway subnet AZ: us-west-2a Ingress IGW route table ID: rtb-0cc03b16fef17a6d8 Gateway subnet CIDR: 10.102.0.0/26 Gateway route table ID: rtb-0fa7cfd751d1f0381 Guard duty enforced: yes
PSF GW Raw Config
General Information: Account Name: shahzad-aws Gateway Name: aws-psfgw1-vpc2-uswest2 Gateway Original Name: aws-psfgw1-vpc2-uswest2 VPC ID: vpc-0a6933729014dc26e Region: us-west-2 Primary CIDR: 10.102.0.0/16 CIDRs: 10.102.0.0/16 Subnet CIDR: 10.102.0.0/26, ID: subnet-026eabb64d25a6bce Type: vpc_legacy GW Instance Public IP: 220.127.116.11 GW EBS encryption: True GW Instance Private IP: 10.102.0.32 GW Instance Size: t3.micro Direct Internet: yes Designated gateway: No Extended public CIDRs: None Single AZ gateway HA: yes monitor subnets: disable ActiveMesh mode: no Stateful Firewall: Disabled Private S3: Disabled Egress Control: Disabled summarized_cidrs: None public_dns_server: 18.104.22.168 SNAT Enabled: no VPN Access: disabled Subnet Information: subnet-01c282c7b4931a641 us-west-2a 10.102.12.0/24 subnet-08acde6fb33c7dc0b us-west-2b 10.102.20.0/24 subnet-026eabb64d25a6bce us-west-2a 10.102.0.0/26 subnet-0073a332e7bf9e6a4 us-west-2a 10.102.11.0/24 subnet-090552a3e46312188 us-west-2a 10.102.19.0/24
AWS Configuration Details
AWS VPC2 was used for this configuration.
VPC2 Route Table is shown as follows
Following screen shows VPC2 Route Table. It has an “Ingress Routing” table that was programmed by Aviatrix Controller. Aviatrix uses AWS Ingress Routing feature to deliver this functionality
External ALB Config
Click here to access the WordPress App using the External ALB. This link will not work after my test lab is destroyed.
Internal ALB Configuration
This step is optional and only required if some internal team wants to access the same farm of web-server behind the ALB.
Testing for Internal ALB
Following WordPress EC2 was deployed for testing
AMI ID ami-02ddad6f7544a1442 Platform details Linux/UNIX AMI name bitnami-wordpress-5.5.1-0-linux-debian-10-x86_64-hvm-ebs-7d426cb7-9522-4dd7-a56b-55dd8cc1c8d0-ami-06dd595c4559434b3.4 Termination protection Disabled Launch time Mon Sep 21 2020 01:03:16 GMT-0700 (Pacific Daylight Time) (about 12 hours) AMI location aws-marketplace/bitnami-wordpress-5.5.1-0-linux-debian-10-x86_64-hvm-ebs-7d426cb7-9522-4dd7-a56b-55dd8cc1c8d0-ami-06dd595c4559434b3.4
I did RDP into the Windows jumb machine and did a traceroute. It shows that I am routed internally and not going towards the Internet
From the same jumb box machine I used browser to access wordpress using the internal ALB