What a Linux server security review actually covers
For owners of one internet-facing Linux server who want a prioritised risk picture before they change production config.
Key takeaway
A useful review is assessment first: what is exposed, how you get in, what the firewall and patch state look like, and which fixes matter most. It is not a stealth penetration test, and it should not silently change your server.
Why people book a review
Typical triggers:
- A VPS that "grew" — Docker apps, reverse proxy, SSH left open to the world
- Preparing for Cyber Essentials / ISO conversations without a full audit programme
- Wanting a clear action list before paying for hands-on hardening
What a focused review usually includes
On one agreed Linux host:
- Internet exposure — listening services, published ports, obvious unnecessary surface
- Remote access — SSH configuration posture (auth methods, root, who can log in)
- Firewall and edge — host firewall intent vs reality; reverse proxy as the public front door where relevant
- Patch and package posture — outdated critical packages; obvious neglected updates
- Account and privilege basics — weak patterns that show up quickly on a single box
- Prioritised findings — what to fix first, what can wait, what needs a maintenance window
You should leave with a written plan and a short findings call — not a vague "looks fine."
What it is not
Be wary of reviews that blur into something else:
| Not included by default | Why |
|---|---|
| Silent remediation | Changes need agreed scope and a backup/window |
| Full CREST penetration test | Different product, different depth and rules of engagement |
| Estate-wide SOC / 24×7 monitoring | Ongoing ops, not a one-server review |
| Application source-code audit | Separate skill set unless scoped |
Honest limits build trust. If something is out of scope, say so up front.
How it differs from hardening
- Review — observe, prioritise, recommend (assessment only)
- Hardening — agreed changes applied and verified on the host
Many clients review first, then harden the top items in a maintenance window.
Practical next step
A focused server security review for one internet-facing Linux server (from £295), with a prioritised action plan and a 60-minute findings call. No changes without a separate agreed scope. Learn more at the security review service page or contact us to book an intro call.