Network Security Guide

bCom | Complete guide to implementing secure network infrastructure

A practical guide for implementing and maintaining secure network infrastructure for your business.

1. Design Principles

Design networks with defense in depth: multiple layers of security so that if one control fails, others remain. Segment your network to limit blast radius of any breach.

2. Firewall Configuration

Deploy firewalls at network boundaries. Use default-deny rules: only allow traffic that is explicitly permitted. Review and update rules regularly.

3. Secure Wireless

Use WPA3 or WPA2-Enterprise. Separate guest and internal networks. Hide SSID where appropriate and use strong pre-shared keys if needed.

4. Monitoring & Logging

Enable logging on firewalls, switches, and critical servers. Monitor for anomalies and set up alerts for suspicious activity.

5. Patching & Updates

Keep network devices and firmware updated. Establish a regular patch cycle for all infrastructure components.