Configure Mikrotik Cloud Host Router(CHR) as VPN / NAT Gateway on webnza

To configure a MikroTik Cloud Hosted Router (CHR) as a VPN/NAT gateway on WebNZA, follow these steps:

Deploy MikroTik CHR on Webnza:
1. Create a New Server:
  - Log in to your WebNZA account.
  - Navigate to the server creation section and select the appropriate server specifications for your needs.
  - Choose MikroTik CHR as the operating system image.
  - Select additional options as needed, such as data center location, additional storage, etc.
  - Add SSH keys for secure access.
  - Finalize and create the server.
2. Access the Server:
  - Once the server is created, note its public IP address.
  - SSH into the server using the provided IP address:

Basic MikroTik CHR Configuration

Login to MikroTik:
- After accessing the server via SSH, log in to MikroTik using the default username (admin) and no password (you will be prompted to set a new password).

Update the RouterOS:

It's good practice to ensure the system is up-to-date:

                            
                                /system package update install

Configure Initial Settings:

Set up the basic settings like hostname, DNS, and NTP.

                            
                                /system identity set name=MyCHR
                                /ip dns set servers=8.8.8.8,8.8.4.4
                                /system ntp client set enabled=yes primary-ntp=1.1.1.1 secondary-ntp=1.0.0.1

VPN Configuration

We'll set up an L2TP/IPsec VPN.

Configure IPsec:

Set up IPsec peer and proposal:

                                
                                    /ip ipsec proposal set default auth-algorithms=sha256 enc-algorithms=aes-256-cbc
                                    /ip ipsec peer add address=0.0.0.0/0 exchange-mode=main-l2tp generate-policy=port-override secret=your_secret_password

Configure L2TP:

Set up the L2TP server:

                                
                                    /interface l2tp-server server set enabled=yes use-ipsec=yes ipsec-secret=your_secret_password default-profile=default

Create VPN User:

Add a VPN user:

                                
                                    /ppp secret add name=user1 password=your_password profile=default-encryption service=l2tp

NAT Configuration

Enable NAT:

Configure NAT to masquerade the traffic:

                                
                                    /ip firewall nat add chain=srcnat action=masquerade out-interface=ether1

Firewall Configuration:

Ensure firewall rules allow VPN traffic:

                                
                                    /ip firewall filter add chain=input protocol=udp dst-port=500,1701,4500 action=accept place-before=1
                                    /ip firewall filter add chain=input protocol=ipsec-esp action=accept place-before=1
                                    /ip firewall filter add chain=input protocol=tcp dst-port=1723 action=accept place-before=1
                                    /ip firewall filter add chain=input protocol=gre action=accept place-before=1
                                    /ip firewall filter add chain=input protocol=udp dst-port=1701 action=accept place-before=1

Connecting to the VPN
1. Client Configuration:
  - Configure your VPN client (Windows, macOS, Linux, etc.) to connect to the VPN server using the public IP address of your WebNZA server.
  - Use the L2TP/IPsec settings with the shared secret and the username/password created earlier.
Testing and Finalizing
1. Test Connectivity:
  - Verify that you can connect to the VPN from a remote client.
  - Check if the VPN client can access the internet through the NAT gateway.
2. Secure the CHR:
  - Change the default admin password.
  - Add firewall rules to secure the CHR from unauthorized access.
3. Backup Configuration:
  - Regularly backup your MikroTik configuration:
```
                                
                                    /export file=backup
                                
                            
```

Example Configuration
Here's a consolidated example of the commands:

/system identity set name=MyCHR /ip dns set servers=8.8.8.8,8.8.4.4 /system ntp client set enabled=yes primary-ntp=1.1.1.1 secondary-ntp=1.0.0.1 /system package update install /ip ipsec proposal set default auth-algorithms=sha256 enc-algorithms=aes-256-cbc /ip ipsec peer add address=0.0.0.0/0 exchange-mode=main-l2tp generate-policy=port-override secret=your_secret_password /interface l2tp-server server set enabled=yes use-ipsec=yes ipsec-secret=your_secret_password default-profile=default /ppp secret add name=user1 password=your_password profile=default-encryption service=l2tp /ip firewall nat add chain=srcnat action=masquerade out-interface=ether1 /ip firewall filter add chain=input protocol=udp dst-port=500,1701,4500 action=accept place-before=1 /ip firewall filter add chain=input protocol=ipsec-esp action=accept place-before=1 /ip firewall filter add chain=input protocol=tcp dst-port=1723 action=accept place-before=1 /ip firewall filter add chain=input protocol=gre action=accept place-before=1 /ip firewall filter add chain=input protocol=udp dst-port=1701 action=accept place-before=1 /export file=backup

By following these steps, you should have a MikroTik CHR configured as a VPN/NAT gateway on Webnza

Configure Mikrotik Cloud Host Router(CHR) as VPN / NAT Gateway on webnza

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