Docker IPsec VPN on CentOS 8

• 2Gb swap
• fail2ban
• ssh on custom port
• firewall
• disable selinux
• python3
• install docker & docker-compose
• create user www, add auth keys, group docker
• prepare docker ipsec vpn

If you have already installed docker, you can go to the VPN Server starting section and start VPN-server immediately.

Prerequisites

1. Generate ssh-key if necessary

Example:

ssh-keygen -t ed25519 -C "[email protected]"

2. Install ansible

Example:

brew install ansible

3. Configure Ansible

vim ~/.ansible.cfg 

[defaults]
inventory      = ~/.ansible_hosts

Ansible playbook

1. Add server credentials to ~/.ansible_hosts

Example:

[vpn]
vpn1 ansible_user=root ansible_host=127.0.0.1

2. Init config and edit if necessary

make init

edit main.yml

3. Install additional Ansible roles from Ansible Galaxy

make install

4. Copy your ~/.ssh/id_rsa.pub to files/authorized_keys

cat ~/.ssh/id_rsa.pub > ./files/authorized_keys

5. Run playbook

make s

or without strict host checking

make ns

6. Add server credentials to ~/.ssh/config

Example:

#vpn

Host vpn1
User www
Port 2222
Hostname 127.0.0.1

VPN Server starting

1. Connect to server via ssh ssh vpn and go to docker-ipsec-vpn dir cd docker-ipsec-vpn

2. Init env-file ./init.sh

3. Start VPN Server ./start.sh

4. Wait about 1 minute

5. Copy config from container ./copy_config.sh (for Mac and iOS)

Please look at README on hwdsl2/docker-ipsec-vpn-server repository for another config options.

Copy config from server (for Mac and iOS)

1. scp vpn:./docker-ipsec-vpn/vpnclient.mobileconfig .