Hashicorp Boundry
Hashicorp boundry is an open-source tool that manages user sessions to private hosts. You set up controllers and workers to route traffic without opening network ports. Teams often use this tool to replace static network keys and manual firewall rules. Still, broad role rules still let users run any command once a session starts. This creates risk when engineers work inside live production databases or servers. How hashicorp boundry works in your network The system splits its work between two
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Hashicorp boundry is an open-source tool that manages user sessions to private hosts. You set up controllers and workers to route traffic without opening network ports. Teams often use this tool to replace static network keys and manual firewall rules. Still, broad role rules still let users run any command once a session starts. This creates risk when engineers work inside live production databases or servers.
How hashicorp boundry works in your network
The system splits its work between two main parts: controllers and workers. The controller checks user logins, manages role rules, and keeps the state database. The worker sits inside the private network and moves TCP traffic to hosts. You first create an org scope and a project scope inside the controller. Next, you group your servers or databases into host catalogs and host sets.
Then you define roles that link your users to those host sets. When an engineer logs in, the controller checks their identity provider group. If the role matches, the worker opens a direct TCP pipe to the host. The user never sees the private IP address of the remote server. Teams can also pair it with HashiCorp Vault to fetch database logins for a session.
Why teams deploy this architecture
Traditional networks rely on VPN tunnels that expose entire subnets to every user. If an attacker steals one laptop, they can scan the whole private network. This tool solves that problem by placing workers in permissions of specific hosts. Users only reach the single port and host that their role allows.
This setup also removes the need to manage static SSH keys on every server. Admins do not need to update firewall lists when a server changes its IP. The host catalog updates the host list while user roles stay the same. It makes network routing much cleaner for fast-moving cloud teams.
What host routing solves and what it misses
Routing TCP traffic by identity solves the first step of network security. It decides who can open a pipe to a database or server port. Still, a TCP pipe does not inspect what happens inside the active session. Once the database session opens, the user has full power of that database role.
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A user with write permissions can drop a table or update every row by default. A user with read permissions can pull a million customer emails and card numbers. The network worker sees raw bytes, not individual SQL queries or shell commands. It cannot pause a dangerous delete statement for peer review before it runs. It also cannot rewrite sensitive fields like phone numbers or national IDs in results.
Audit teams face another gap when they check compliance logs later. Network logs show that a user opened a TCP pipe at two o'clock. They do not show which queries ran or what data returned to the laptop. To control risk during the session, teams need inspection at the command level.
Check database and API queries on the wire
Identity tools, roles, and network rules decide who opens a session. Setup alone cannot check what each query does or mask sensitive values in a response once a session starts. When workflows touch Postgres, MySQL, SQL Server, MongoDB, ClickHouse, Kubernetes APIs, SSH, or internal HTTP APIs, hoop.dev runs beside those services as an open-source proxy, a sidecar for your Postgres or API. It inspects requests coming in and results going back on the wire.
Your login details and client tools stay as they are while hoop.dev guardrails refuse bad deletes or drops before they run. On responses, hoop.dev data masking rewrites matched sensitive values in memory. Furthermore, hoop.dev holds SOC 2 Type II, is MIT licensed, and writes every query and decision to an audit trail that generates evidence for HIPAA, GDPR, and PCI DSS. See the source on GitHub.
Frequently asked questions
What is the difference between a controller and a worker?
The controller handles user logins, role checks, and system settings. The worker sits near your private hosts and routes the actual TCP network traffic.
Does hashicorp boundry replace a traditional VPN?
Yes, it replaces broad network VPNs for engineer sessions to servers and databases. It opens per-host TCP pipes instead of placing users on the private network.
Can a TCP worker mask sensitive data inside SQL results?
No, a TCP worker only routes network packets between the client and the host. Rewriting fields like emails or card numbers requires a tool that parses database traffic.