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Networking Using Telnyx
Telnyx Networking on AWS VPC
Telnyx Networking on AWS VPC

A step-by-step process to deploy a Virtual Private Server (VPS) on Amazon AWS and configure Telnyx Edge Routing to it.

Telnyx Engineering avatar
Written by Telnyx Engineering
Updated over a week ago

AWS VPC and Telnyx Networking

An overview of what we will be going over:

  • Installing any necessary packages/software

  • Generating WireGuard private and public keys

  • Modifying the AWS environment to allow WireGuard traffic

  • Setting up the WireGuard interface with Telnyx- Activating the VPN

Step 1: Telnyx Configuration for AWS VPC

Reference the configuration section located here.

Copy and take note of the Peer Configuration file along with the private key that you got assigned from the above tutorial, it should look like the following:

Peer Configuration file.

Step 2: Install WireGuard

Telnyx Edge Routing supports any distribution that supports WireGuard; as such a good place to start and reference is the WireGuard installation.
Referencing the Ubuntu installation, simply run

apt install wireguard-tools

WireGuard utilizes UDP port 51280 as the listening port for the interface. If you are going to route traffic through the EC2 instance, you'll need to turn off the source/destination check for the VPN instance. You can easily accomplish this with the AWS CLI by running:

aws ec2 modify-instance-attribute --no-source-dest-check --instance-id <instance-id>

We are ready to configure our instance!

Step 3: Configuring Telnyx with WireGuard

We will first need to create a configuration file in the /etc/wireguar` folder called wg0.conf. This is where we will place the configuration instructions that we generated from Step 1:
PrivateKey = <private key for this machine>
Address = <IP address for WireGuard interface>
PostUp = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
ListenPort = 51280
[Peer]PublicKey = <public key for peer machine>AllowedIPs = <IP address for peer WireGuard interface>, <additional CIDRs>PersistentKeepalive = 1

Replace the above with your specific configuration

> Note: - If you have chosen an interface name different from wg0, please ensure that you modify the PostUp and PostDown lines accordingly. It's important to note that this configuration utilizes Network Address Translation (NAT) to present the VPN traffic as if it originates from the VPN instance within the VPC. This eliminates the need to disable source/destination checks or update routing tables.

> Note: - Considering that my client devices are situated behind a NAT, I have included the PersistentKeepalive setting. While it may not be necessary for everyone, I anticipate that many individuals will find it beneficial.

> Note: - Regarding the notation <additional CIDRs> mentioned earlier, if you desire other IP addresses from the peer's network to route through this connection, specify those addresses/networks here. This becomes particularly significant in the "client" side configuration, where you consolidate all traffic for a VPC (or a group of VPCs) through a single WireGuard node.

Step 4: Test

We can test to see if it's working by checking the portal and seeing the last seen status change:

Mission control portal.

or you can curl/trace into your server to confirm the Global IP that is configured to it.

Example Response:

root@MacBook-Pro % ping
PING ( 56 data bytes
64 bytes from icmp_seq=0 ttl=53 time=184.512 ms
64 bytes from icmp_seq=1 ttl=53 time=183.202 ms
64 bytes from icmp_seq=2 ttl=53 time=183.365 ms
64 bytes from icmp_seq=3 ttl=53 time=183.040 ms
64 bytes from icmp_seq=4 ttl=53 time=183.310 ms
64 bytes from icmp_seq=5 ttl=53 time=183.980 ms
64 bytes from icmp_seq=6 ttl=53 time=183.457 ms
64 bytes from icmp_seq=7 ttl=53 time=183.097 ms
--- ping statistics ---
8 packets transmitted, 8 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 183.040/183.495/184.512/0.471 ms

Next Steps

Congratulations! You have succesfully connected an AWS VPS instance to the Telnyx Edge Routing Network to the configured IP in your portal.

If you have any further questions or would like to see more tutorials, feel free to reach out to our support team or our external Slack channel for help!

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