Knowledge Hub.
Short lessons that explain one thing properly. Search for a word, or pick a subject and read it through from the basics.
Lessons found
6 of 58 lessons in Networks and business IT Show all lessons
Networks and business IT
The equipment in the comms cupboard and what it does: addresses, routers, firewalls, VLANs and VPNs.
6 lessons
- What is an IP address? An IP address is the number that tells the internet where a device is. What IPv4 and IPv6 look like, who hands addresses out, and what to ask. Beginner 3 min read
- Public IP vs private IP addresses A public address can be reached from anywhere. A private one only works inside your office. What that means for remote access and hosting. Intermediate 3 min read
- Router vs switch vs access point: what’s the difference? A router joins your office to the internet, a switch connects wired devices, and an access point provides Wi-Fi. How to tell which one you need. Intermediate 3 min read
- What is a firewall? A firewall decides which network traffic may pass and which is blocked. The two kinds, what a firewall cannot stop, and what to check on yours. Beginner 3 min read
- What is a VLAN? A VLAN splits one office network into several separate ones on the same cables. What it is used for, and the equipment it needs. Intermediate 3 min read
- What is a VPN? People use “VPN” for two different things: a secure link to the office network, and a privacy service. What each one does and does not do. Beginner 3 min read
Want the longer read?
Tell us what needs sorting.
Book a call or send an email. We reply within one business day.