docs: update cloud

cloud.md

@@ -2,7 +2,7 @@
 title: Cloud
 description: 
 published: true
-date: 2019-12-07T10:18:00.378Z
+date: 2019-12-07T11:03:33.870Z
 tags: 
 ---
 
@@ -28,3 +28,48 @@ Networking > Virtual Cloud Networks >Virtual Cloud Network Details > Security Li
 
 ### Wireguard Server
 
+
+#### Install
+```
+sudo add-apt-repository ppa:wireguard/wireguard
+sudo apt-get install wireguard
+# Activate kernel module
+sudo modprobe wireguard
+```
+
+#### Enable NAT
+```
+cat << EOF >> /etc/sysctl.conf
+net.ipv4.ip_forward=1
+EOF
+sudo sysctl -p
+```
+
+
+#### Generate Keys
+```
+cd /etc/wireguard
+umask 077
+wg genkey | sudo tee privatekey | wg pubkey | sudo tee publickey
+
+sudo vim /etc/wireguard/wg0.conf
+```
+Content:
+```
+[Interface]
+PrivateKey = <your server private key here>
+Address = 10.50.0.1/24
+SaveConfig = false
+PostUp   = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -A FORWARD -o wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o ens3 -j MASQUERADE;
+PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -D FORWARD -o wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o ens3 -j MASQUERADE;
+ListenPort = 54541
+```
+
+#### Start Server
+```
+# Start Server Fast
+sudo wg-quick up wg0
+# Enable Server
+sudo systemctl enable wg-quick@wg0
+```
+