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

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Is it required to create a NAT instance in every availability zone of a VPC

I'm trying to figure out what are the best practices to setup a HA VPC The question relate to: What is the correct setup of a VPC that is spread all over the AZ of a region, with private and public ...
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1answer
16 views

Ec2 instance static private ip address

I am using an on-demand instance for testing some services in my spare time. So, I start and stop that instance very frequently, and I see its public and private IPs changing each time. This is ...
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0answers
24 views

Why can't I SSH to this AWS NAT instance in a public subnet?

For experimentation purposes, I’m trying to setup an AWS EC2 inside a VPC that has both public and private subnets as described in this tutorial. However, when I try to SSH in step #2, it fails ...
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1answer
27 views

Can you setup multiple Public subnets on a single AWS VPC?

So here is our scenario, we currently have a production environment on AWS, we utilize an VPC, and use multiple EC2 servers that are all on this VPC. In order to create a development environment that ...
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0answers
27 views

Can we connect an OSX computer to an AWS VPC VPN?

We have a OSX computer we would like to connect to our AWS VPC. This OSX computer is on a network we do not control in a different physical location as the rest of our network. Using OSXs Networking ...
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0answers
17 views

Hudson proxy configuration on amazon EC2-VPC instance

I am using EC2 VPC instance. For Hudson installation of plugins, I hit the command java -jar Hudson.war --httpPort=8888 After this, I opened url http://127.0.0.1:8888 in instance's internet ...
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1answer
34 views

Setting up OpenVPN server: should I use tun or tap?

I'm trying to set up my first OpenVPN server, and I'm having trouble figuring out whether I should use tun or tap for my particular setup. I have an Amazon VPC with a few EC2 instances running ...
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1answer
28 views

What's the difference between a private and public subnet?

For the purposes of learning, I'm trying to setup a public/private VPC in AWS without using the wizard, and I'm trying to determine how AWS decides if a subnet is private/public. For argument sake, ...
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0answers
19 views

Cant connect to machines within my VPC

I created a new EC2 Machine (c3.4xlarge) within my VPC. I can login into the server and ping google.com and some machines of my VPC but not all. When I re - created the machine it worked. I am ...
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1answer
32 views

No public IP after stop/start Amzon EC2 intance

I have setup an AWS EC2 instance with a Elastic IP. Static IP and Elastic IP both works fine (shows default NGINX page). However when I STOP the instance and START back up, there is only a domain ...
1
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1answer
28 views

security group rules between EC2-classic and VPC server

We are currently using a set of Amazon EC2-classic servers for hosting our live and staging environments. We've got a couple of web servers and a background worker server in each environment. We've ...
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1answer
34 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 ...
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0answers
56 views

Set up pfSense on AWS VPC?

I am attempting to setup pfSense as a nat box for internal servers on a VPC. I have followed the guides posted for configuring access and have followed the AWS instructions for setting up and ...
0
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1answer
39 views

Unable to connect the Ubuntu EC2 instance to VPC LAN on AWS using secondary NIC adapter?

Infrastructure setup: VPC is created with 192.168.254.0/24 netwok Private subnet within VPC (Virtual Private Cloud) is created with 192.168.254.0/25 network Public subnet within the VPC is created ...
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0answers
61 views

Amazon VPC NAT performance problems

I have a set of servers inside an Amazon VPC, whose job is to get image files from S3 and process them. The S3 downloads would frequently stall, sometimes for over 2 minutes, but all would eventually ...
0
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1answer
66 views

How can two AWS VPCs using the same Customer Gateway for a VPN connection

If there are two vendors with seperate VPCs connecting to a single customer gateway for a VPN connection, what are possible configuration options to allow this? As it stands it seems that AWS only ...
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0answers
65 views

Amazon AWS Site-to-Site VPN doesn't allow concurrent pings

I have some strange behaviour with an AWS VPC site-to-site set up and would like some help to understand where my problem might be. Set Up I have a VPC with a private and public subnet, there is a ...
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1answer
43 views

Port 53 in Amazon Security Group

Everything works as expected. This question is for learning purposes only. Using Amazon Security Groups in a VPC. Outbound rules are: 0.0.0.0/0 Port 80 0.0.0.0/0 Port 443 Iptables allows OUTPUT ...
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1answer
30 views

Why Use a NAT Instance? [closed]

Consider the following VPC: Public subnet with app servers and a separate NAT instance. Private subnet with database server. What benefits do we gain by using a stand alone NAT? EDIT: Why use ...
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2answers
26 views

Could I have 2 nat on vpc [closed]

There is a vpc on amazon that has two subnets. The outer one has internet access and the inner one using NAT server to connect to internet. Inner subnet have plenty of servers for development and ...
0
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1answer
67 views

Connecting to multiple AWS VPCs via a single VPN connection

I'm looking at locking down an existing AWS setup. At the moment, everything is within a single default VPC (test, staging, production) and all within public subnets. My plan is to seperate the 3 ...
3
votes
1answer
104 views

Internet access from private VPC subnet?

My brain is a little bit fried trying to figure this out but I can't seem to get private subnets to connect to the internet to grab updates for example. Basically all I want is web access for these ...
3
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2answers
332 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 ...
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1answer
90 views

Connecting two AWS Regions: Why not use two Virtual Private Gateways?

I am attempting to connect two AWS regions. AWS's documentation suggests starting up an instance on both sides to run software IPSec (OpenSWAN or StrongSWAN), giving both instances an elastic IP and ...
0
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1answer
420 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 ...
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0answers
31 views

Access ElasticCache Redis instance within VPC from a classic instance

I have an existing AWS EC2-Classic deployment that I am seeking to add a small Redis instance to. As this only needs to be a tiny Redis instance I elected to use the t2.small size. I've since found ...
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1answer
41 views

What name to use when communicating between AWS subnets

I've been googling this all day and can't quite figure it out. I'm trying to setup a multi-tier application in an AWS VPC, but I'm pretty a rookie at large system network architecture. I'm going to be ...
2
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1answer
61 views

What is the advantage of using a NAT plus private sub-net on AWS vs a public sub-net with locked down security groups and ACL?

My Scenario: I have an SQS queue with an auto-scaling group of EC2 workers processing messages from the queue into a database in a different region. Implied Networking Needs for EC2 Workers: Access ...
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0answers
117 views

AWS Elastic Beanstalk : Error creating an auto scaling group without vpc

I have the following error when I try to create a Node.js environment in Elastic Beanstalk : Creating Auto Scaling group named: awseb-e-neymbigw5a-stack-AWSEBAutoScalingGroup-1QX6LF04LAXUF failed ...
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0answers
25 views

Reach non existing AWS VPC subnet from IPSec tunnel

So here is my setup: VPC: 172.16.0.0/16 Subnet 1: 172.16.1.0/24 openvpn server: eth0: 172.16.1.10 tun0: 172.17.0.1 ovpn client 1: 172.17.0.6 ovpn client 2: 172.17.0.10 IPSec VPN is using ...
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2answers
233 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 ...
2
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2answers
134 views

Trouble hitting EC2 AmazonProvidedDNS server over VPN

I have a VPC using the network 10.10.0.0/16, and a VPN server in the public subnet (10.10.0.0/24). The VPN uses addresses in the 10.11.254.0/24 range. When I connect to the VPN, I can access hosts in ...
1
vote
1answer
130 views

How can I enable outgoing HTTP/HTTPS requests on an EC2 in a public subnet within a VPC on Amazon AWS

I set up a VPC using scenario 2 from the AWS Docs: http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html I've assigned an Elastic IP to an EC2 instance running in a Public Subnet. ...
0
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1answer
94 views

How to RDP securely to an EC2 instance?

I have a VPC with a few EC2 instances running Windows Server 2012 that will be used as workstations (in a similar way to WorkSpaces). Right now they are in a public subnet and users can connect using ...
0
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1answer
37 views

MySQL via SSL on VPC private subnet

Is an SSL connection recommended when connecting to a MySQL database server via a private subnet? SSL provides encryption but SSL causes a performance hit. The MySQL database server only serves ...
1
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2answers
55 views

how can I add/remove security groups on running ec2 instances which is not included in VPC?

I want to change the security group on running ec2 instance which is not included in VPC. I read that this is possible only if my instance is running in VPC. I tried to create a VPC and include my ...
0
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0answers
71 views

Limiting VPC access only to SNS confirmations

I have a setup with VPC populated with EC2 instances that have public IP addresses. They are needed mostly for the SNS subscriptions. While subscribing I have to provide a public URL where so called ...
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3answers
172 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 ...
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0answers
54 views

How to use linux repository for setup (ubuntu) when box are in aws scenario 2 wizard created private subnet?

I know lots of questions and I have personally tried manual VPC creation multiple times until I gave to the wizard (NAT concept wouldn't stick). I thought the wizard would actually configure ...
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0answers
23 views

How to Reserved AWS VPC DB instance

I want to know how we can purchase Reserved Instance of RDS into VPC. In console their is no option to define the RI we are purchasing is in VPC like EC2. or simply I have to purchase the standard RI ...
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4answers
674 views

EC2 instances in VPC and access to the Internet

I am playing a bit with AWS. I created one VPC (with 10.1.0.0./24 net) and two EC2 instances attached to it. One EC2 has 10.1.0.4, second 10.1.0.5 . I allocated one Elastic IP to VPC and associated it ...
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0answers
158 views

Configuring VPC with Elastic Beanstalk

I followed the standard documentation for AWS, but I am unable to access the EB-created instances via SSH or get a healthy status check on them from the ELB. The relevant setup and security group ...
0
votes
1answer
460 views

Do ephemeral ports need to be open on the network firewall in order for nginx and sshd to work properly?

Preamble: So, before I actually ask the question, I'd like to point out that I'm somewhat apprehensive about posting this because even as I'm typing this out it it feels like I'm asking someone to ...
0
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1answer
36 views

Any way to set a private ip within vpc?

I've tried using the --private_ip_address but nothing. Anyone knows if there is an option to set up a specific ip address inside of a vpc? I don't want to setup an elastic one. I have a vpn connection ...
1
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1answer
211 views

Amazon AWS IAM Policy for single VPC Subnet

I want to create an IAM policy that allows a user deploy instances as follows: They can only use 1 AMI They can only deploy to 1 specific VPC subnet They can only use 1 specific VPC security group ...
1
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1answer
548 views

Why I can't ping server on remote network from AWS through VPN

I've created a VPC in Amazon and created a number of subnets - both public and private. 1 of these subnets is a private subnet that has a linux server in it. I've created a virtual private gateway for ...
0
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1answer
732 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 ...
1
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1answer
80 views

Can I add an extra route to my Amazon VPC?

I have an Amazon VPC set up between AWS and my corporate LAN. Originally, when I set it up, I specified static routing for the following CIDRs: 10.55.55.0/24 10.77.77.0/24 10.99.99.0/24 I set up ...
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4answers
80 views

Best Method to test Opened Ports [closed]

We have a requirment where in we have to test 500+ Port opening rules. So requires a suggest on below points. Which is the best tool to test the connectivity of the ports. Telnet will be sufficient ...
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0answers
71 views

AWS / VPC Multiple Public IP

Thanks for your time in advanced! I am trying to setup some infratstructe in AWS / VPC that utilises a Dev, Test and Prod environment. Everything is complete expect for the networking side in the ...