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Questions tagged [amazon-vpc]

Amazon Virtual Private Cloud (Amazon VPC) lets you provision a logically isolated section of the Amazon Web Services (AWS) Cloud where you can launch AWS resources in a virtual network that you define

2 votes
1 answer
3k views

VPC public subnet internet access with ELB hooked up

I am attempting to set up a web server (nginx) that needs access to the internet while also being hooked up to an ELB but I am having trouble getting this solution working. Details: 3 public subnets ...
jmreicha's user avatar
  • 790
10 votes
4 answers
16k views

AWS VPC + IPtables + NAT: Port Forwarding is not working

Yesterday, I posted a question here but I think was not clear enough in my words. BTW, This question is not a duplicate. I have AWS VPC Setup as below. GOAL/PROBLEM: SSH to Server A from internet. ...
slayedbylucifer's user avatar
57 votes
6 answers
58k views

What is the recommended CIDR when creating VPC on AWS?

I have been creating AWS VPCs and I am wondering if there is a recommended CIDR value when creating VPCs. What are the factors that I must consider when choosing a CIDR and does the CIDR value affect ...
Gene Diaz's user avatar
  • 727
35 votes
2 answers
37k views

Elastic file system (EFS) mount outside of AWS

I have a server that is outside of AWS. I'd like to be able to mount an EFS volume to it, but I am not sure if that is possible. Perhaps if you create a VPC, and you create a tunnel over VPN? Does ...
Adam's user avatar
  • 461
35 votes
3 answers
32k views

Static IP address for outgoing traffic from AWS autoscaling group

I'm going to have a number of EC2 instances in an Elastic Beanstalk autoscaling group in a default subnet in a VPC. The app on these EC2 instances needs to connect to a third party service who uses an ...
davidwebster48's user avatar
12 votes
2 answers
10k views

AWS VPC - why have a private subnet at all?

In Amazon VPC, the VPC creation wizard allows one to create a single "public subnet" or have the wizard create a "public subnet" and a "private subnet". Initially, the public and private subnet ...
JKim's user avatar
  • 562
50 votes
5 answers
49k views

Can't connect to EC2 instance in VPC (Amazon AWS)

I've taken the following steps: Created a VPC (with a single public subnet) Added an EC2 instance to the VPC Allocated an elastic IP Associated the elastic IP with the instance Created a security ...
Ryan Lynch's user avatar
22 votes
3 answers
70k views

How to SSH to ec2 instance in VPC private subnet via NAT server

I have created a VPC in aws with a public subnet and a private subnet. The private subnet does not have direct access to external network. So, there is a NAT server in public subnet which forward all ...
jasonfungsing's user avatar
13 votes
1 answer
3k views

AWS NAT vs AWS IGW vs AWS Router

As per this answer, router and gateway are same devices, in terms of functionality. In AWS world, we have internet gateway, NAT gateway and router Are these three not the same?
user1787812's user avatar
12 votes
1 answer
9k views

Can't establish VPC peering connection from Amazon Lightsail

AWS has a new barebones VPS offering, Lightsail, which is sort of an EC2-Lite -- extremely light -- offering with just a few fixed-size instance classes, simplified pricing, and very few options, ...
Michael - sqlbot's user avatar
11 votes
3 answers
26k views

AWS CIDR is not within the CIDR ranges of VPC

Right now i have a public subnet : CIDR 10.0.0.0/24 I want to add a new subnet on my current vpc to be able to use RDS service. When i try to add a new subnet with CIDR, i got this message : 10.0.1....
TheShun's user avatar
  • 213
9 votes
3 answers
12k views

CodeBuild with VPC settings fails to download CodeCommit source

I originally had a simple CodePipeline setup triggered by commits to a CodeCommit repo, with a "Stage" that output the source code as an artifact and another "Stage" using CodeBuild to run some code ...
twiz's user avatar
  • 295
8 votes
1 answer
14k views

AWS VPC routing table with both Internet Gateway and NAT Gateway

I have a single VPC in Amazon Web Services with the subnet 172.31.0.0/16. I have created an EC2 instance in this subnet and given it a public Elastic IP. There is an Internet Gateway on this VPC. So, ...
user35042's user avatar
  • 2,721
8 votes
2 answers
12k views

Connecting an EC2 VPC with OpenVPN all routed traffic being lost

I'm trying to use OpenVPN on Amazon Linux to connect the local LAN to a VPC on EC2. I have traffic flowing from the OpenVPN instance to any machine on the LAN, but other machines on the VPC are not ...
lschweiss's user avatar
  • 360
7 votes
3 answers
4k views

Amazon EC2 VPC: NAT instance download speed performance drop

I have a set of servers inside Amazon EC2 in VPC. Inside this VPC I have a private subnet and a public subnet. In the public subnet I have set up a NAT machine on a t2.micro instance that basically ...
j0nes's user avatar
  • 955

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