Wireguard Scripts

add and remove clients from a wireguard server.

bash add-client.sh <client_name> will create a config in clients for that client.

bash remove-peer.sh <client_pub_key> will remove the peer.

Download the generated <client_name>.tar.gz file and extract it. Follow the instructions in SETUP.txt in the resulting folder.

This set of scripts was heavily influcenced by:

https://www.ckn.io/blog/2017/11/14/wireguard-vpn-typical-setup/

https://www.wireguard.com/install/

https://www.wireguard.com/quickstart/

Installation

NOTE: this assumes some decent commandline knowlege.

1. Clone/fork(if you want to save your own configs) the Repo

2. install wireguard on server (https://www.wireguard.com/install/)

3. install qrencode for easier addition of peers (apt install qrencode)

4. as root, cd /etc/wireguard, and create server keys: wg genkey | tee server_private_key | wg pubkey > server_public_key

5. copy wg0-server.example.conf in this project to /etc/wireguard/wg0.conf

6. edit /etc/wireguard/wg0.conf replace PrivateKey = asdf123= with the private key created above. Change any other settings you need different (ip range, network interfaces[eth0 is outgoing interface in this example]) stop being root

7. start wireguard: sudo wg-quick up wg0

8. add a client bash add-client.sh <new-client>

9. setup iptables rules, see: https://www.ckn.io/blog/2017/11/14/wireguard-vpn-typical-setup/ step 6 for more details.

   Track VPN Connection

   iptables -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
   iptables -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
   

   VPN Traffic

   iptables -A INPUT -p udp -m udp --dport 51820 -m conntrack --ctstate NEW -j ACCEPT
   

   Forwarding/NAT

   iptables -A FORWARD -i wg0 -o wg0 -m conntrack --ctstate NEW -j ACCEPT
   iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE
   

   Make iptables persist:

   apt-get install iptables-persistent
   systemctl enable netfilter-persistent
   netfilter-persistent save
   

10. if everything is working right: systemctl enable [email protected]

11. (optional) commit your changes to your fork of this repo.

Contributing

If you see something wrong and have fixed it, or have something to add, make a Pull Request!