Bastion hosts and VPNs have long been the go-to solutions for secure access to internal systems. While they serve a critical purpose, modern infrastructure demands a better solution—one that's simpler, more secure, and easier to manage. This post explores why traditional options may fall short and introduces a more modern alternative that tackles these gaps effectively.
The Limitations of Bastion Hosts
Bastion hosts act as an intermediary for SSH or RDP access to protected resources within a network. While effective at controlling access, they present a series of challenges:
- Complex Configuration: Setting up and maintaining bastion hosts can become cumbersome with resource scaling.
- Key Management Risks: Developers often share SSH keys, leading to tracking issues and potential security breaches.
- Single Points of Failure: Bastion hosts, if compromised or misconfigured, can expose an entry point for attackers.
Bastion hosts also lack the granular, identity-based access that modern teams require to operate efficiently. The inability to efficiently audit and control access by individual engineers adds friction to securing production environments.
Where VPN Solutions Fall Short
VPNs work by creating encrypted tunnels between users and internal resources. Though widely used, they come with their own set of drawbacks:
- Overhead and Latency: Routing all traffic through a VPN server introduces delays. Performance often suffers under load.
- Network-Level Access: VPNs provide access to entire subnets instead of specific services, creating unnecessary exposure.
- Difficult Scalability: Adding new users, scaling infrastructure, and ensuring secure configurations becomes painful at scale.
For teams managing cloud-native architectures, VPNs add unnecessary complexity and introduce risks by granting broad visibility when developers often need access to just a handful of endpoints.