Network Security in 2025: A Comprehensive Guide
Updated August 25, 2025
What is Network Security?
Network security guards data as it moves, using firewalls, segmentation, and encrypted tunnels to keep bad traffic out and sensitive traffic unreadable. Continuous monitoring closes the loop by spotting and stopping threats that slip through.
Core Categories of Network Security Solutions
Virtual Private Networks
Virtual Private Networks create encrypted tunnels between users and company systems. They secure remote access, protect data in transit, and remain foundational for connecting distributed workforces.
Operational Technology Security
Operational Technology Security defends industrial systems such as manufacturing lines or energy grids. It addresses unique risks where downtime can disrupt physical operations or public safety.
DNS Security
DNS Security protects users by filtering malicious domain lookups and blocking access to harmful sites. It also guards the integrity of DNS traffic to prevent hijacking or redirection attacks.
Web Application Firewall
Web Application Firewalls protect online applications from attacks such as SQL injection, cross-site scripting, and bot abuse. They inspect traffic and enforce rules that keep web services secure and available.
Network Detection and Response
Network Detection and Response applies advanced analytics to identify hidden or stealthy threats moving within a network. It provides visibility and accelerates response to lateral movement or insider compromise.
Best Network Security Solutions by Company Size
Small business
Midmarket
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