Bastion hosts have been the go-to solution for securing access to private networks and critical systems, but managing them can be a challenge. Achieving high availability for bastion hosts often requires considerable manual intervention, infrastructure maintenance, and expensive failover mechanisms. In this post, we will explore how to move beyond traditional bastion hosts and adopt a solution with high availability baked in, without the operational headaches.
The Problem with Traditional Bastion Hosts
Bastion hosts serve as a gateway, ensuring that only authenticated and authorized users can access sensitive resources. However, when operational reliability is critical, bastion hosts often expose a number of challenges:
- Single Point of Failure: Without redundancy, your bastion system can be a significant weak link. If the server crashes or becomes unavailable, access to your infrastructure halts.
- Manual Failovers: Building redundancy for bastion hosts often means setting up additional hosts and manually configuring failovers.
- Operational Costs: Regular patching, scaling, and securing bastion hosts require ongoing effort from engineers. Monitoring and managing these hosts can quickly drain resources.
- Challenging Scalability: Scaling bastion hosts to handle increased traffic or team growth isn’t seamless. Load balancing configurations are needed, adding further complexity.
These issues are magnified in environments where uptime is not optional and cost-effectiveness is a priority.
High Availability for Secure Network Access
To overcome bastion host limitations and achieve high availability, moving toward a replacement solution that is modern, scalable, and seamless is essential. Here’s what to look for in a bastion host replacement:
1. Built-in Failover and Redundancy
The replacement should eliminate reliance on a single server by handling failovers transparently. Highly available systems should ensure requests are routed to healthy systems without any manual action.