Bastion Host (Jump Box)

A bastion host is a hardened server used as a controlled entry point for admin access.

Updated: 2026-03-06

Definition

A bastion host (jump box) provides a single controlled point to access internal systems.

It is heavily hardened and monitored to reduce exposure of internal admin interfaces.

Key points

Controlled admin entry point
Hardened + monitored
Often paired with MFA and logging

Common mistakes

Allowing broad access from the bastion to everything.
Not monitoring sessions and activity.

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