A VPN client is a terminal device or software used to establish a secure connection between a user and a VPN server.
What is VPN?
VPN (Virtual Private Network) helps you access internet resources remotely, securely, and privately with tunneling technology. The VPN encrypts your personal information and hides your IP address from the public when you use the internet. To the users of the VPN, it will look like the computers were directly connected to each other.
Common Network Topology:

Here we take WR2100 as a demonstration.
Step 1: Open a web browser and go to http://cudy.net or http://192.168.10.1.
For details, please refer to How to log into the web interface of Cudy Router?
Step 2: Click on General Settings->VPN and enable VPN.

Default Rule: Allow all devices or Ban all devices to use VPN.
To specify the device, click on System Status-> Devices->VPN to enable or disable it.

Site-to-Site: Allow the devices in two sites to communicate with each other.
VPN Policy:
Disable: No additional setting.
VPN kill switch: Turn off the Internet connectivity when the VPN connection is lost.
Domain: Specify which domains go through the VPN and which don't
Remote Subnet: Specify what subnets go through the VPN and which don't
Step 3: In the Protocol list, select the one you need and enter the VPN information provided by your VPN provider.
• PPTP VPN
Enter the VPN server address (for example, 113.92.73.163) and the VPN Username and password provided by your VPN provider.

• L2TP VPN
Enter the VPN server address (for example 113.92.73.163), VPN username and password, and pre-shared key provided by your VPN provider.
If your VPN provider also provides you the tunnel IP which binds with the account, you can enable the Use custom tunnel IP option.

• OpenVPN
Click on Browser to import the configuration file provided by your VPN provider.

• WireGuard VPN
Click on Browser to import the configuration file provided by your VPN provider.

The Interface and Peer will synchronize automatically from your VPN Provider's CONF File.

• ZeroTier Slave
Type in the ZeroTier Network ID and Gateway provided by the ZeroTier Master. The Gateway can be found on VPN Status part.


Related Article: How to remote connect Cudy Router via Zerotier?-Cudy Home
68 comments
wireguard server has these static routing settings options. Destination subnet mask metric what to forward from router CUDY? destination is 192.168.10.0 or vpn address 198.18.5.4 subnet mask 255.255.255.0 metric 100
@Dear Lukas,
You must add a static rule on the VPN server. The destination is the LAN subnet of the cudy AC1200, the gateway is the tunnel IP address of the cudy AC1200, the interface is the VPN interface, Then try again.
“I bought a cudy ac1200 with wireguard. I generated a config file on the server and uploaded it to the cudy router. The problem is that from location A I can’t ping or connect to location B (cudy router client wireguard), but in the opposite direction it works fine.”
@Alessandro
Dear Customer,
Thank you for contacting Cudy support team. Our technical support has contacted you via email. Please check.
“I have a Cudy WR6500 and I set up OpenVPN from NordVPN following their instructions (https://support.nordvpn.com/hc/it/articles/31761845199121-Come-configurare-una-VPN-su-un-router-Cudy) but it doesn’t work: the VPN Status is Not Connected and Tunnel IP is 0.0.0”
I bought a cudy ac1200 with wireguard. I generated a config file on the server and uploaded it to the cudy router. The problem is that from location A I can’t ping or connect to location B (cudy router client wireguard), but in the opposite direction it works fine.
I have a Cudy WR6500 and I set up OpenVPN from NordVPN following their instructions (https://support.nordvpn.com/hc/it/articles/31761845199121-Come-configurare-una-VPN-su-un-router-Cudy) but it doesn’t work: the VPN Status is Not Connected and Tunnel IP is 0.0.0.0