Cybersecurity & Information Security

Is Network+ necessary for a career in cybersecurity?

3 min readPublished: July 23, 2026

Connected network infrastructure illustrating the importance of network knowledge for cybersecurity

Quick answer

The Network+ certification is not a formal requirement for most cybersecurity jobs, but the knowledge it covers is almost essential. A SOC analyst, cloud security professional, or Penetration Tester needs to understand IP addresses, TCP and UDP, DNS, DHCP, routing, switching, VPN, Firewall, and troubleshooting. This knowledge can also be learned without taking an exam.

Many beginners want to jump straight to security tools. The problem is that every alert, scan, or suspicious connection occurs over a network. Without understanding what normal activity is, it's difficult to identify an anomaly or explain a finding.

What Network+ knowledge is important for cybersecurity?

IPv4, private and public addresses, and Subnetting.
TCP, UDP, ports, and Handshake.
DNS, DHCP, ARP, NAT, and VPN.
Switching, Routing, and VLANs.
Firewall, Segmentation, and Zero Trust principles.
Wi-Fi, Cloud, and virtual networks.
Troubleshooting and reading a network diagram.

Why does SOC need networks?

A SOC analyst investigates IP addresses, ports, DNS, VPN, Firewall, and traffic. They need to know if a connection is expected, what the direction of communication is, and which logs are missing. Network knowledge shortens investigation and reduces False Positives.

Why does Pentest need networks?

In authorized penetration tests, it is necessary to understand services, communication paths, segmentation, and the difference between a local result and a result through a Gateway. A scanning tool does not replace an understanding of what it presents.

Is it mandatory to take the exam?

No. You can study according to Network+ objectives, perform labs, and demonstrate knowledge in an interview. The exam is beneficial when a structured goal is needed, when employers specify it, or when professional experience is lacking.

When is the certification particularly worthwhile?

You have no background in IT or communications.
You find it difficult to explain DNS or TCP.
You are aiming for SOC, NOC, IT, or Cloud.
You want a foundation before Security+.
You need a study framework and a measure of progress.

When can an alternative be chosen?

Anyone who already holds CCNA, works with networks, or can demonstrate practical knowledge is not required to have Network+. You can use a networking course, Cisco Networking Academy, or an independent lab - provided that the topics are covered and not just viewed.

Recommended networking project

Set up two virtual machines on an isolated network.
Configure addresses and test communication.
Run a Web service and analyze DNS and TCP in Wireshark.
Add a Firewall and document a rule that blocks or permits traffic.
Write a network diagram and an explanation for troubleshooting.

Summary

Network+ is not a formal entry requirement, but its knowledge is a foundation for cybersecurity. Decide if you also need the certificate based on your background, budget, and job requirements - and don't skip the practice.