Hey everyone! I'm diving into AWS and trying to get a handle on the different connectivity options for VPCs. I put together a summary based on some insights I found, but I'm not sure if I've covered everything. Here are some scenarios I'm thinking about: 1. Default VPC with a Bastion Host; 2. Private EC2 Instances with a NAT Gateway; 3. IPv6 using an Egress-Only Internet Gateway; 4. VPC Peering; 5. Using a Transit Gateway for centralized routing; 6. Establishing a Site-to-Site VPN; and 7. Direct Connect for dedicated connections. Can anyone tell me if I've missed any key options or if this summary looks good to go? Thanks!
3 Answers
Make sure to plan your IP address space wisely before jumping into VPC creation. Use IPAM or similar tools to track your ranges. Also, consider using Managed Prefix Lists right from the start — it helps with consistency as your infrastructure grows. If you throw a firewall in the mix with the Transit Gateway, it can help monitor your traffic effectively!
You've got most of the essential options there! Just a heads up, if necessary, you can set up a system that mimics the NAT Gateway without using the built-in options, which can get pricey. Also, you could route traffic through an internet gateway using external IPs as an alternative.
You might want to consider using a NAT Instance instead of the managed NAT Gateway from AWS. If it suits your case, it could save you a good amount on costs! Check out the NAT Instance link online for details.
Haha, love the name of that site, fck-nat! It definitely sticks in your mind.
Thanks for that insight! Is there any clear resource you recommend for setting up that scenario? I'd love to read more.