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Linux client setup

Provision client config

After you deploy a server, you can use an included Ansible script to provision Linux clients too! Debian, Ubuntu, CentOS, and Fedora are supported. The playbook is deploy_client.yml.

Required variables

client_ip - The IP address of your client machine (You can use localhost in order to deploy locally)
vpn_user - The username. (Ensure that you have valid certificates and keys in the configs/SERVER_ip/pki/ directory)
ssh_user - The username that we need to use in order to connect to the client machine via SSH (ignore if you are deploying locally)
server_ip - The vpn server ip address

Example

ansible-playbook deploy_client.yml -e 'client_ip=client.com vpn_user=jack server_ip=vpn-server.com ssh_user=root'

Additional options

If the user requires sudo password use the following argument: --ask-become-pass.

OS Specific instructions

Some Linux clients may require more specific and details instructions to configure a connection to the deployed Algo VPN, these are documented here.

Fedora Workstation

(Gnome) Network Manager install

First, install the required plugins.

dnf install NetworkManager-strongswan NetworkManager-strongswan-gnome

(Gnome) Network Manager configuration

In this example we'll assume the IP of our Algo VPN server is 1.2.3.4 and the user we created is user-name.

Go to Settings > Network
Add a new Network (+ bottom left of the window)
Select IPsec/IKEv2 (strongswan)
Fill out the options:
- Name: your choice, e.g.: ikev2-1.2.3.4
- Gateway:
  - Address: IP of the Algo VPN server, e.g: 1.2.3.4
  - Certificate: cacert.pem found at /path/to/algo/configs/1.2.3.4/ipsec/.pki/cacert.pem
- Client:
  - Authentication: Certificate/Private key
  - Certificate: user-name.crt found at /path/to/algo/configs/1.2.3.4/ipsec/.pki/certs/user-name.crt
  - Private key: user-name.key found at /path/to/algo/configs/1.2.3.4/ipsec/.pki/private/user-name.key
- Options:
  - Check Request an inner IP address, connection will fail without this option
  - Optionally check Enforce UDP encapsulation
  - Optionally check Use IP compression
  - For the later 2 options, hover to option in the settings to see a description
- Cipher proposal:
  - Check Enable custom proposals
  - IKE: aes256gcm16-prfsha512-ecp384
  - ESP: aes256gcm16-ecp384
Apply and turn the connection on, you should now be connected

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