A penetration test is a controlled attack on your own network, run by someone on your side, to find the holes before a real attacker does. Big companies do them routinely. Small businesses often skip them, assuming they are too small to be a target. They are not, and a pen test is one of the most direct ways to see where you actually stand.
What it is, plainly
Instead of guessing whether your defenses hold, you test them. A tester probes your systems the way an attacker would: looking for exposed services, weak passwords, unpatched software, and misconfigurations, then sees how far those get them. The output is not a theory, it is a list of what someone could actually do.
External and internal
An external test looks at what is reachable from the internet: your firewall, your public-facing services, anything you have exposed without realizing it. An internal test assumes an attacker already has a foothold, say through one phished laptop, and sees how far they can move from there. Most businesses are surprised by the internal result, because once inside, moving sideways is often wide open.
What it usually turns up
- Services exposed to the internet that should not be.
- Default or reused passwords still in place.
- Missing patches on a server everyone forgot about.
- Flat networks where one compromised machine can reach everything.
The report is the point
A good pen test ends with a prioritized list: here is what we found, here is how bad each one is, and here is what to fix first. That turns a vague worry into a concrete to-do list you can actually work through. The test finds the problems. Fixing them is what makes you safer.
If you have never had your network tested and want to know what an attacker would really find, that is something I can arrange and walk you through, in plain language.