With so many IAM tools and technologies available in the market, finding the right solution for secure remote access can feel overwhelming. One such tool is a B2B VPN. In this article, we’ll explore what a B2B VPN is, share a real-life example, compare it to a site-to-site VPN, and discuss some better alternatives. Let’s dive in and take a closer look!
What is a B2B VPN?
A B2B VPN (Business-to-Business Virtual Private Network) is a secure connection established between multiple business entities over the internet. It allows companies to securely share data, resources, and services with their partners, suppliers, or other businesses, even if they are located in different geographical regions.
You might have secured your internal team's access to resources with a traditional VPN, but what happens when some "trusted outsiders" need access too? Suppliers, vendors, third-party marketing agencies, and even newly acquired businesses—these external partners often need to tap into your network. That’s where B2B VPNs come into play. Think of them as the secret handshake of the digital age—ensuring that only trusted outsiders get in while keeping your sensitive information safe.
Key Features of B2B VPN:
Secure Communication: B2B VPNs use encryption protocols to ensure that data transmitted between multiple businesses is secure and protected from unauthorized access.
Private Network: Although the communication happens over the public internet, a B2B VPN creates a private, encrypted tunnel that isolates the data from other traffic on the network.
Scalability: B2B VPNs can be scaled to connect multiple partners and businesses as the network of business relationships grows.
Cost-Effective: Compared to dedicated physical connections or leased lines, B2B VPNs are a cost-effective solution as they leverage existing internet infrastructure.
Common Use Cases:
Supplier and Partner Integration: Companies use B2B VPNs to securely share inventory data, order processing systems, or other critical applications with suppliers and partners.
Remote Access to Internal Systems: Businesses can provide secure access to internal networks or systems for remote offices or partners without exposing those systems to the public internet.
Joint Ventures and Collaborations: When multiple businesses collaborate on a project, a B2B VPN can provide a secure means of sharing project resources, tools, and information.
Drawbacks:
Complexity: Setting up and managing a B2B VPN can be complex, requiring expertise in network security and VPN technologies.
Performance Issues: VPNs can introduce latency and bandwidth limitations depending on the quality of the internet connection and the VPN solution used.
Insider threat: Giving another company access to your internal network increases the potential number of insiders who may compromise your data.
Example of B2B’s Use Case
An example of a B2B VPN could involve a manufacturer and a supplier who need to share sensitive data securely over the internet.
Scenario:
Company A (Manufacturer) produces electronics and relies on Company B (Supplier) to provide critical components.
Company A needs real-time access to Company B's inventory system to ensure timely ordering and reduce supply chain delays.
Company B, in turn, needs access to Company A's order management system to process orders efficiently and provide updates.
Solution:
Operation:
Secure Data Sharing: Once the B2B VPN is established, Company A can securely access Company B's inventory system as if it were part of its local network. Similarly, Company B can access Company A's order management system securely.
Continuous Operations: The VPN allows both companies to continuously exchange data, such as real-time inventory levels, orders, and shipping information, ensuring smooth and efficient operations.
Benefits:
Security: The data transmitted between Company A and Company B is encrypted, preventing unauthorized access or eavesdropping.
Efficiency: The direct connection reduces delays in communication, which is critical for maintaining supply chain efficiency.
Cost-Effectiveness: Instead of relying on expensive leased lines or physical connections, the B2B VPN uses the existing internet infrastructure to create a secure link.
Key Points:
The B2B VPN in this example enables two separate businesses (the manufacturer and the supplier) to collaborate closely and securely over the internet.
The secure tunnel ensures that sensitive business data is protected, which is crucial in B2B relationships involving proprietary information or critical business processes.
This setup is typical in industries like manufacturing, logistics, retail, and others where multiple businesses need to integrate their systems and share data securely.
B2B VPN Alternative
Pomerium is an alternative to traditional B2B VPNs, offering a more modern, identity-based approach to securing inter-business communication and access to resources.
Here's a detailed comparison and explanation of how Pomerium serves as an alternative to a B2B VPN.
Pomerium as a B2B VPN Alternative
1. Identity-Aware Proxy vs. Network-Based Security
Traditional B2B VPN: A B2B VPN creates a secure, encrypted tunnel between two or more business networks, allowing users and systems in one network to access resources in the other network as if they were on the same local network. Access is typically controlled at the network level, meaning that once a connection is established, users have broad access to resources within the connected network.
Pomerium: Pomerium is an identity-aware proxy that provides secure access to applications and resources based on the identity of the user, rather than just the network they are connecting from. Pomerium enforces access policies based on user identity, roles, and context, offering more granular control compared to the broad access typically granted by a VPN.
2. Zero Trust Security Model
Traditional B2B VPN: VPNs often operate on the assumption that users who have gained access to the network are trusted, which can be a security risk if credentials are compromised or if a user's device is infected with malware.
Pomerium: Pomerium aligns with the Zero Trust security model, where no user or device is trusted by default, even if they are within the network perimeter. Every access request is evaluated based on the user's identity, device posture, and other contextual factors, ensuring that access is granted only when all policy conditions are met–and ongoing requests are continuously verified against those policies.
3. Ease of Deployment and Maintenance
Traditional B2B VPN: Setting up and maintaining a B2B VPN can be complex, requiring network configuration, firewall adjustments, and ongoing maintenance to ensure the VPN remains secure and performs well. It can also be challenging to scale the VPN as the number of connected partners or users grows.
Pomerium: Pomerium is easier to deploy and scale, especially in cloud-native environments. It integrates seamlessly with modern identity providers (e.g., Google Workspace, Okta, Azure AD) and can be configured to protect applications without requiring changes to the underlying network infrastructure. This makes it a more flexible solution for businesses that want to quickly onboard partners or scale their operations.
4. Granular Access Control
Traditional B2B VPN: VPNs typically offer coarse-grained access control, where users can access an entire network or subnet once they are connected. This can lead to over-privileged access, which increases security risks.
Pomerium: Pomerium provides fine-grained access control by allowing administrators to define policies at the application level. Access to specific applications or resources can be tightly controlled based on the user’s role, the device they are using, and other contextual factors. This reduces the risk of unauthorized access and limits the potential attack surface.
5. Audit and Monitoring Capabilities
Traditional B2B VPN: While VPNs can log connections, monitoring user activity within the network often requires additional tools. This can make it difficult to track exactly who accessed what resources and when.
Pomerium: Pomerium includes built-in auditing and monitoring features that provide detailed logs of user activity. Administrators can easily track which users accessed which applications, when they did so, and under what conditions. This level of visibility enhances security and compliance efforts.
Is B2B VPN Same as Site-to-Site VPN?
B2B VPN and Site-to-Site VPN are closely related concepts, and in many contexts, they refer to the same thing, but there are some nuances to consider.
Site-to-Site VPN:
Definition: A Site-to-Site VPN connects entire networks (or sites) to one another over the internet. This typically involves creating a secure connection between two or more office locations of a single company or between a company's network and a partner's network.
Usage: It's commonly used to link different physical office locations so that they can communicate as if they were on the same local network, or to connect a company’s network with a trusted partner's network.
Technology: Site-to-site VPNs often use protocols like IPsec to establish a secure, encrypted tunnel between the networks. Routers, firewalls, or VPN concentrators at each site are typically configured to manage this connection.
B2B VPN:
Definition: A B2B VPN is a broader term that refers to a secure connection between two or more businesses, enabling them to share resources and data securely over the internet.
Usage: While it often involves a Site-to-Site VPN configuration, the term B2B VPN emphasizes the business relationship aspect—specifically, the secure connection between different business entities, such as suppliers, partners, or clients.
Key Differences:
Scope and Focus:
Site-to-Site VPN: Primarily focuses on connecting networks or sites, usually within the same organization or with closely trusted partners.
B2B VPN: While it may use Site-to-Site VPN technology, the term is used to describe secure connections in a business-to-business context, potentially involving multiple organizations with varying levels of trust.
Use Cases:
Site-to-Site VPN: Often used within a single organization to connect different office locations.
B2B VPN: Used to connect different businesses, which could involve more complex security considerations and policies due to the varying levels of trust between the businesses.
In summary, while B2B VPN and Site-to-Site VPN can refer to the same underlying technology (a VPN connecting two networks), the term "B2B VPN" is typically used in a broader business context, emphasizing the connection between different companies. On the other hand, "Site-to-Site VPN" specifically describes the technical aspect of linking entire networks together.
