Domnev

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Revision as of 13:20, 22 March 2023 by Domnev (talk | contribs)

The information on this page is updated in accordance with the 00.07.4 firmware version .

Introduction

Configuration overview and prerequisites

Before we begin, let's take a look at the configuration that we are attempting to achieve and the prerequisites that make it possible.

Prerequisites:

  • Two RUT/RUTX series routers with RUTOS firmware;
  • An end device (PC, Laptop) for configuration;

If you're having trouble finding any page or some of the parameters described here on your device's WebUI, you should turn on "Advanced WebUI" mode. You can do that by clicking the "Basic" button under "Mode," which is located at the top-right corner of the WebUI.

Topology

RUT1 - RUTX12 as a hub. A hub is a server, to which our spoke will be connecting (IPsec responder). It will be our "default gateway" for the spoke device. RUTX12 has a LAN subnet of 192.168.11.0/24 configured on it, which should be reachable by the spoke.

RUT2 - RUT955 as a spoke. A spoke is a client, that will be connected to the spoke (IPsec initiator). It will be connected to a hub for basic internet access. RUT955 has a LAN subnet of 192.168.9.0/24 configured on it.

RUT1 (Hub) configuration

Start by configuring the hub (RUT1) device. Login to the WebUI, navigate to Services → VPN → IPsec and add a new IPsec instance. Configure everything as follows.

Note: Not specified fields can be left as is or changed according to your needs.

Instance configuration
  1. Enable instance;
  2. Authentication method - Pre-shared key;
  3. Pre-shared key - your desired password;

Connection configuration
  1. Mode - Start;
  2. Type - Tunnel;
  3. Local subnet - 0.0.0.0/.0;
  4. Key exchange - IKEv2;
  1. Enable Local firewall;
  2. Remote source IP - 10.20.30.0/24;
  3. Remote DNS 9.9.9.9;

Proposal configuration
  1. Encryption - AES256;
  2. Authentication - SHA512;
  3. DH group - ECP521;
  1. Encryption - AES128;
  2. Authentication - SHA256;
  3. DH group - ECP521;

RUT2 (Spoke) configuration

Login to the RUT2 WebUI, navigate to Services → VPN → IPsec and add a new IPsec instance. Configure everything as follows.

Instance configuration
  1. Enable instance;
  2. Remote endpoint - RUT1 public IP;
  3. Authentication method - Pre-shared key;
  4. Pre-shared key - the same password you have set on RUT1 when configuring HUB instance;

Connection configuration
  1. Mode - Start;
  2. Type - Tunnel;
  3. Enable default route;
  4. Key exchange - IKEv2;

Proposal configuration
  1. Encryption - AES256;
  2. Authentication - SHA512;
  3. DH group - ECP521;
  1. Encryption - AES128;
  2. Authentication - SHA256;
  3. DH group - ECP521;

Testing the configuration

If you've followed all the steps presented above, your configuration should be finished. But as with any other configuration, it is always wise to test the setup in order to make sure that it works properly.

Using the ipsec status command we can see that IPsec tunnel is successfully established on both routers. The command output on a hub (RUT1) device:

File:IPsec statusHUB.png

The same command output on spoke (RUT2) device:

Also, as the hub should be reachable by spoke, we can try pinging the hub using ping 192.168.11.1:

See also

IPsec on Teltonika Networks devices

External links

OpenWrt IPsec basics

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