chrisswanda · September 8, 2025 00:26 · spaskol · Jan 24, 2025 · spaskol · Jan 24, 2025
diff --git a/WireGuard_Setup.txt b/WireGuard_Setup.txt
 Install WireGuard via whatever package manager you use.  For me, I use apt.

 $ sudo add-apt-repository ppa:wireguard/wireguard
 $ sudo apt-get update
 $ sudo apt-get install wireguard

 MacOS
 $ brew install wireguard-tools

 Generate key your key pairs.  The key pairs are just that, key pairs.  They can be
 generated on any device, as long as you keep the private key on the source and 
 place the public on the destination.  

 $ wg genkey | tee privatekey | wg pubkey > publickey
 example privatekey - mNb7OIIXTdgW4khM7OFlzJ+UPs7lmcWHV7xjPgakMkQ=
 example publickey - 0qRWfQ2ihXSgzUbmHXQ70xOxDd7sZlgjqGSPA9PFuHg=

 One can also generate a preshared key to add an additional layer of symmetric-key cryptography to be mixed into the already existing public-key cryptography, for post-quantum resistance.

 # wg genpsk > preshared

 Take the above private key, and place it in the server.  And conversely, put the 
 public key on the peer.  Generate a second key pair, and do the opposite, put the
 public on the server and the private on the peer.  Put the preshared key in the client config if you choose to use it.

 On the server, create a conf file - /etc/wireguard/wg0.conf (These are examples,
 so use whatever IP ranges and CIDR blocks that will work for your network.
 ################################
 [Interface]
 Address = 10.0.0.1/24
 DNS = 1.1.1.1
 PrivateKey = [ServerPrivateKey]
 ListenPort = 51820
 PostUp   = iptables -A FORWARD -i %i -j ACCEPT; iptables -A FORWARD -o %i -j ACCEPT; iptables -t nat -A POSTROUTING -o enp9s0 -j MASQUERADE
 PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -D FORWARD -o %i -j ACCEPT; iptables -t nat -D POSTROUTING -o enp9s0 -j MASQUERADE

 [Peer]
 #Peer #1
 PublicKey = [Peer#1PublicKey]
 AllowedIPs = 10.0.0.3/32

 [Peer]
 #Peer #2
 PublicKey = [Peer#2PublicKey]
 AllowedIPs = 10.0.0.10/32

 [Peer]
 #Peer #3
 PublicKey = [Peer#3PublicKey]
 AllowedIPs = 10.0.0.2/32

 [Peer]
 #Peer #4
 PublicKey = [Peer#4PublicKey] 
 AllowedIPs = 10.0.0.11/32
 ##################################

 On each client, define a /etc/wireguard/mobile_user.conf - 

 ###################################
 [Interface]
 Address = 10.0.0.3/24
 PrivateKey = [PrivateKeyPeer#1]

 [Peer]
 PublicKey = [ServerPublicKey]
 PresharedKey = [PresharedKey]
 Endpoint = some.domain.com:51820
 AllowedIPs = 0.0.0.0/0, ::/0 
 # if you want to do split tunnel, add your allowed IPs
 # for example if your home network is 192.168.1.0/24
 # AllowedIPs = 192.168.1.0/24

 # This is for if you're behind a NAT and
 # want the connection to be kept alive.
 PersistentKeepalive = 25
 ########################################

 sudo wg show
 #########################################
 peer: Peer #1
  endpoint: 192.168.2.1:50074
  allowed ips: 10.0.0.2/32
  latest handshake: 4 minutes, 16 seconds ago
  transfer: 57.58 KiB received, 113.32 KiB sent

 peer: Peer #2
  endpoint: 99.203.28.43:36770
  allowed ips: 10.0.0.10/32
  latest handshake: 5 minutes, 30 seconds ago
  transfer: 92.98 KiB received, 495.89 KiB sent
 ##################################################
  
 Start/stop interface  
 wg-quick up wg0
 wg-quick down wg0

 Start/stop service  
 $ sudo systemctl stop [email protected]
 $ sudo systemctl start [email protected]

 Instead of having to modify the file for every client you want to add to the 
 server you could also use the wg tool instead:

 # add peer
 wg set wg0 peer <client_pubkey> allowed-ips 10.0.0.x/32

 # verify connection
 wg

 # save to config
 wg-quick save wg0

 ######### EDIT ##############

 I was setting up a relative with a Wireguard config, and figured I might as well use qrencode to do it since I have it installed on my local machine.

 qrencode -t ansiutf8 < /etc/wireguard/mobile_user.conf


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	Install WireGuard via whatever package manager you use. For me, I use apt.

	$ sudo add-apt-repository ppa:wireguard/wireguard
	$ sudo apt-get update
	$ sudo apt-get install wireguard

	MacOS
	$ brew install wireguard-tools

	Generate key your key pairs. The key pairs are just that, key pairs. They can be
	generated on any device, as long as you keep the private key on the source and
	place the public on the destination.

	$ wg genkey \| tee privatekey \| wg pubkey > publickey
	example privatekey - mNb7OIIXTdgW4khM7OFlzJ+UPs7lmcWHV7xjPgakMkQ=
	example publickey - 0qRWfQ2ihXSgzUbmHXQ70xOxDd7sZlgjqGSPA9PFuHg=

	One can also generate a preshared key to add an additional layer of symmetric-key cryptography to be mixed into the already existing public-key cryptography, for post-quantum resistance.

	# wg genpsk > preshared

	Take the above private key, and place it in the server. And conversely, put the
	public key on the peer. Generate a second key pair, and do the opposite, put the
	public on the server and the private on the peer. Put the preshared key in the client config if you choose to use it.

	On the server, create a conf file - /etc/wireguard/wg0.conf (These are examples,
	so use whatever IP ranges and CIDR blocks that will work for your network.
	################################
	[Interface]
	Address = 10.0.0.1/24
	DNS = 1.1.1.1
	PrivateKey = [ServerPrivateKey]
	ListenPort = 51820
	PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -A FORWARD -o %i -j ACCEPT; iptables -t nat -A POSTROUTING -o enp9s0 -j MASQUERADE
	PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -D FORWARD -o %i -j ACCEPT; iptables -t nat -D POSTROUTING -o enp9s0 -j MASQUERADE

	[Peer]
	#Peer #1
	PublicKey = [Peer#1PublicKey]
	AllowedIPs = 10.0.0.3/32

	[Peer]
	#Peer #2
	PublicKey = [Peer#2PublicKey]
	AllowedIPs = 10.0.0.10/32

	[Peer]
	#Peer #3
	PublicKey = [Peer#3PublicKey]
	AllowedIPs = 10.0.0.2/32

	[Peer]
	#Peer #4
	PublicKey = [Peer#4PublicKey]
	AllowedIPs = 10.0.0.11/32
	##################################

	On each client, define a /etc/wireguard/mobile_user.conf -

	###################################
	[Interface]
	Address = 10.0.0.3/24
	PrivateKey = [PrivateKeyPeer#1]

	[Peer]
	PublicKey = [ServerPublicKey]
	PresharedKey = [PresharedKey]
	Endpoint = some.domain.com:51820
	AllowedIPs = 0.0.0.0/0, ::/0
	# if you want to do split tunnel, add your allowed IPs
	# for example if your home network is 192.168.1.0/24
	# AllowedIPs = 192.168.1.0/24

	# This is for if you're behind a NAT and
	# want the connection to be kept alive.
	PersistentKeepalive = 25
	########################################

	sudo wg show
	#########################################
	peer: Peer #1
	endpoint: 192.168.2.1:50074
	allowed ips: 10.0.0.2/32
	latest handshake: 4 minutes, 16 seconds ago
	transfer: 57.58 KiB received, 113.32 KiB sent

	peer: Peer #2
	endpoint: 99.203.28.43:36770
	allowed ips: 10.0.0.10/32
	latest handshake: 5 minutes, 30 seconds ago
	transfer: 92.98 KiB received, 495.89 KiB sent
	##################################################

	Start/stop interface
	wg-quick up wg0
	wg-quick down wg0

	Start/stop service
	$ sudo systemctl stop [email protected]
	$ sudo systemctl start [email protected]

	Instead of having to modify the file for every client you want to add to the
	server you could also use the wg tool instead:

	# add peer
	wg set wg0 peer <client_pubkey> allowed-ips 10.0.0.x/32

	# verify connection
	wg

	# save to config
	wg-quick save wg0

	######### EDIT ##############

	I was setting up a relative with a Wireguard config, and figured I might as well use qrencode to do it since I have it installed on my local machine.

	qrencode -t ansiutf8 < /etc/wireguard/mobile_user.conf


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