Network Security Audit for Small Businesses: What Gets Checked

Say you run a 15-person accounts office. Everyone shares one router, the CCTV recorder is on the same network as the billing PC, and the Wi-Fi password was set by the technician who installed the broadband three years ago. Nothing has gone wrong yet. Is that a plan, or just luck?

A network security audit answers that question with evidence instead of guesses. Below is what a proper audit looks at, what you should prepare, and how to tell a useful report from a printout of scanner output.

What a network security audit actually covers

An audit is a structured review of how your network is built and who can reach what. For a small business it usually has five parts:

1. Inventory. Every device that has an IP address: PCs, printers, DVRs, Wi-Fi extenders, that old NAS in the cupboard.
2. Firewall rule review. Which traffic is allowed in and out, and whether each rule still has a reason to exist.
3. Open port and service check. What is reachable from the internet and from inside the LAN.
4. Configuration hardening. Default passwords, outdated firmware, remote admin switched on, weak Wi-Fi encryption.
5. A written report that ranks problems by how much they matter and says what to change.

Our Firewall & Network Security Audit covers firewall rules, port hardening and a report. That is the scope, and we would rather you know it than assume we also test your applications for vulnerabilities.

Firewall rules: the part most offices never look at

Firewall rules pile up. Someone needed remote access to the Tally server for a month, a rule was added, and nobody removed it. Two years later it is still there.

What we look for in the rule set

• "Allow any to any" rules that make the firewall decorative.
• Port forwarding to a PC or recorder, such as RDP on port 3389, exposed straight to the internet.
• Rules with no description and no owner.
• Guest Wi-Fi that can still see the office LAN.

Exposed RDP is the one we would fix first on almost any small-office network. If you need remote access, a VPN is the safer door.

Common myths we hear from business owners

How to prepare before the audit

You can save time, and therefore cost, by gathering a few things first.

• A rough network diagram, even a hand sketch. Where does the internet come in, and where are the switches?
• Admin access to the router or firewall, or someone who can sit with us during the review.
• A list of what must stay reachable from outside: a CCTV app, remote Tally access, a VPN for staff.
• Any past incidents, such as a ransomware scare or a staff member who left on bad terms.

Tell us honestly what is business-critical. We will avoid changing anything that could take billing offline during working hours.

How to judge the report you receive

A scanner can produce fifty pages in ten minutes. That isn't an audit. When you review any report, ours or another provider's, check these points:

1. Does it explain findings in plain language, not just CVE numbers?
2. Is each finding ranked, so you know what to fix this week and what can wait?
3. Does it state exactly what was tested and what was not?
4. Are fixes specific, for example "disable remote management on WAN" rather than "improve security"?

If a provider guarantees you will be "100% secure," walk away. Nobody can promise that.

Who this is for, and who it isn't

It suits offices, clinics, small factories and agencies with a shared network, a server or NAS, or remote access needs. It is a good idea before you add CCTV, move to a new office, or after any suspicious incident.

It isn't the right fit if you only have a home router and two laptops (a basic router cleanup would do), or if you need a compliance certification for a regulator. For that you'd need an accredited auditor and we'd tell you so.

How we handle this at DegitalService

The audit is listed from ₹22,000 with a typical delivery of 6 days. Larger or more complex networks, with several sites or many VLANs, may need more time and we'd quote that before starting. We don't list separate package tiers or add-ons for this service, so the price depends on scope, and we confirm scope with you first.

You can read the full details on the Firewall & Network Security Audit page. If your setup is unusual, talk to us before ordering. If you're ready, you can start an order.