Configuring Site-to-Site VPN With MikroTik Routers
Have you been looking for a secure way to connect your network to another network? If so, you might want to consider using an EoIP tunnel with IPsec. This type of tunnel provides encryption and security, so you can share data between networks without worrying about cross-site attacks or unauthorized access.
Here's what you need to know:
What is EoIP?
EoIP stands for "Ethernet over IP" and it's a protocol that allows you to create a virtual Ethernet network over any IP network. This means you can extend a Layer 2 network (like a LAN) over a Layer 3 network (like the internet).
Why use EoIP?
Using EoIP has several advantages:
- You can connect geographically disparate networks without the expense of a dedicated leased-line connection.
- You can use existing IP infrastructure.
- You can create a secure tunnel with IPsec.
What is IPsec?
IPsec stands for "Internet Protocol Security" and it's a protocol suite used for secure Internet Protocol (IP) communications. It provides security services including authentication, confidentiality, and integrity.
Why use IPsec with EoIP?
Using IPsec with EoIP provides an extra layer of security to your tunnel. Without IPsec, anyone who has access to the physical or virtual network between the two networks can potentially access the traffic sent through the tunnel. With IPsec, the traffic is encrypted, so even if someone intercepts it, they can't read it.
How to Set Up EoIP with IPsec?
Here are the basic steps for setting up EoIP with IPsec:
- Configure the EoIP tunnel.
- Configure IPsec on the EoIP tunnel.
- Configure IPsec on the other end of the tunnel.
- Test the connection.
Step 1: Configure the EoIP tunnel
To configure the EoIP tunnel, you need two MikroTik routers, one on each network you want to connect. Follow these steps:
- Connect to the MikroTik router via Winbox.
- Click on "Interface" in the left-hand menu.
- Click on the "+" button to add a new interface.
- Select "EoIP" from the list of interface types.
- Configure the settings for the EoIP interface, including the tunnel ID and the remote IP address.
- Repeat these steps on the other MikroTik router, but reverse the settings for the remote IP address.
Step 2: Configure IPsec on the EoIP tunnel
Now that you have the EoIP tunnel configured, you need to set up IPsec to secure the tunnel. Here's how:
- Click on "IP" in the left-hand menu.
- Click on the "IPsec" tab.
- Click on the "+" button to add a new IPsec policy.
- Select the EoIP interface from the list of "Src. Address".
- Select the remote network from the list of "Dst. Address".
- Select "aes-256-cbc" as the encryption algorithm.
- Select "sha256" as the hash algorithm.
- Select "dh-group14" as the key exchange algorithm.
- Enter a pre-shared key for authentication.
- Click "OK" to save the IPsec policy.
Step 3: Configure IPsec on the other end of the tunnel
You'll need to configure IPsec on the other MikroTik router as well. Follow the same steps as above, but select the local network as the "Src. Address" and the remote EoIP interface as the "Dst. Address".
Step 4: Test the connection
Once you have both ends of the tunnel configured, you can test the connection. Ping the IP address of a device on the other network to make sure the traffic is flowing through the tunnel. If you're having trouble, check the IPsec logs to see if there are any errors.
Conclusion
Using an EoIP tunnel with IPsec is a secure and cost-effective way to connect two networks. With this setup, you can be sure that your traffic is encrypted and protected from unauthorized access. Whether you're setting up a permanent connection between two networks or a temporary connection for a specific project, EoIP with IPsec is an excellent option.
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