Many business leaders wrongly assume that antivirus software alone protects their network. It doesn’t. Cyberattacks have evolved, and single-layer tools fall short.
95% of cybersecurity incidents are caused by human error, with 35% attributed to misconfigured systems. These incidents can shut down operations, corrupt sensitive data, and violate compliance requirements.
Brian Lynch, Chief Executive Officer of Bakersfield Networks, notes that “Most SMBs don’t realize that true protection isn’t about security tools. It’s about how they work together.” Your network doesn’t need more tools. It needs smarter layers.
This blog explains the types of network security that work together to protect your business.
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Network Firewalls
Firewalls are often your first line of defense. They inspect incoming and outgoing traffic to block unauthorized access. You can think of them as a gate that only allows trusted data to enter or leave. Firewalls work based on defined rules that match against IP addresses, ports, and protocols.
There are two main types: hardware and software. Hardware firewalls protect your entire network at the perimeter. Software firewalls are installed on devices and control traffic for individual endpoints. Both are important. When used together, they filter and contain risks more effectively.
Many firewalls now support features like deep packet inspection, application control, and virtual private network (VPN) support. These features help enforce compliance and protect against known and unknown threats.
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Intrusion Detection and Prevention Systems
While firewalls filter known traffic, IDS and IPS focus on detecting abnormal or malicious behavior. An Intrusion Detection System (IDS) monitors traffic and raises alerts. An Intrusion Prevention System (IPS) goes further by taking real-time action to block or contain the threat.
These tools monitor activity patterns and detect suspicious signatures or anomalies. IDS/IPS solutions support compliance by logging potential threats and offering visibility into attack trends.
IPS tools often integrate with firewalls and endpoint protection tools to create a proactive defense layer. Their purpose is not just to alert you. Their job is to stop damage before it spreads.
Endpoint Security
Endpoints are your laptops, desktops, mobile phones, and servers. If an attacker compromises just one of them, they can often gain access to your entire network.
Endpoint security includes antivirus tools, anti-malware software, endpoint detection and response (EDR), and patch management systems. These tools monitor devices for threats, enforce security policies, and close known vulnerabilities through regular updates.
With remote and hybrid work becoming common, endpoint protection is more critical than ever. You need to ensure that devices connecting to your network are secure, regardless of location.
Integrated endpoint tools can send alerts to your central management system, helping you respond quickly if a threat is detected on any device.
Network Access Control
Network Access Control (NAC) determines who or what can access your systems. NAC systems authenticate users and devices before granting access. If a user fails authentication or if a device does not meet defined security criteria, access is denied.
NAC supports environments where contractors, visitors, and remote users frequently connect to internal systems. It uses techniques like multifactor authentication (MFA), device posture assessment, and access policies to ensure that only trusted users or devices are allowed.
These controls reduce insider threats and help you maintain compliance with security policies. They also support zero-trust models by assuming no device or user is trustworthy by default.
Email and Web Security
Email and web traffic are still the biggest entry points for cyberattacks. 90% of successful attacks start with a phishing email. That’s why these areas deserve specific protections.
According to CloudSceureTech, an average office worker receives an average of 121 emails daily. Email security tools scan messages for malicious attachments and suspicious links. They often sandbox unknown attachments or block senders outright. Spam filtering, spoofing detection, and domain-based message authentication are also included.
Web security filters traffic to block access to dangerous sites. Tools like DNS filtering, browser isolation, and URL inspection prevent users from downloading malicious content or visiting risky pages.
These tools work best when combined with user awareness training. When users know what to look out for and when tools prevent mistakes, your risks drop.
Encryption
Encryption protects your data both while it is being transmitted and while it is stored. Without encryption, attackers who intercept traffic or gain access to a device can read sensitive data.
There are several types of encryption in network security. Symmetric encryption uses one key to encrypt and decrypt. Asymmetric encryption uses a public and private key pair. These methods are used in VPNs, secure email, HTTPS connections, and file protection.
Encryption supports HIPAA, PCI-DSS, and other data protection laws. It also builds trust with your clients, partners, and vendors. If data is ever stolen, strong encryption ensures it cannot be read or used.
Scanning in Network Security
Proactive scanning helps you detect vulnerabilities before attackers do. The most common types of scanning in network security are:
- Vulnerability scanning: Finds weaknesses in your systems, software, or configurations that attackers could exploit.
- Port scanning: Checks for open ports that may be exposed to unauthorized access.
- Malware scanning: Detects malicious files or code within your network or on specific devices.
These scans help you fix security gaps, meet compliance needs, and reduce the chance of downtime. Regular scanning is a low-cost but high-value task that can prevent major incidents.
Secure Configuration and Continuous Monitoring
A common source of risk is poor configuration. Secure configuration means making sure every system follows security best practices. That includes disabling unnecessary services, closing unused ports, and setting strong password policies.
Continuous monitoring tracks your systems for deviations from expected configurations. When something changes, like an unauthorized login or a new device connection, your team is alerted.
Tools like SIEM (Security Information and Event Management) help collect and analyze logs from across your systems. This not only helps you detect threats but also supports compliance reporting and forensic investigations.
Why You Need More Than One Type of Network Security
No single solution offers full protection. Attackers don’t rely on just one method, and neither should you. That’s why businesses use different types of network security to create layers.
When firewalls, scanning tools, endpoint protection, and access controls work together, your security becomes stronger. Each layer addresses a different weakness. One tool might miss a threat that another catches.
Building a layered approach takes planning. Start by identifying your critical data and systems. Then match security tools to the risks those assets face. Regular reviews will help you adjust as threats evolve.
Comparing the Tools That Support Different Types of Network Security
It’s important to understand what tools are available and what each one does. This helps you make smart investment decisions. The table below gives you a quick comparison.
| Security Tool | Main Function | Example Tools | Key Benefit |
| Firewall | Traffic filtering based on rules | pfSense, Cisco ASA | pfSense, Cisco ASA Blocks unauthorized traffic |
| IDS/IPS | Threat detection and prevention | Snort, Suricata, Palo Alto | Detects and stops suspicious activity |
| Endpoint Protection | Secures user devices | CrowdStrike, SentinelOne | Prevents malware and data theft |
| NAC | Controls who can access the network | Aruba ClearPass, Cisco ISE | Enforces identity-based access |
| Email/Web Security | Blocks malicious emails and risky websites | Mimecast, Proofpoint | Stops phishing and downloads |
| Encryption | Protects data in transit and at rest | OpenSSL, BitLocker, TLS | Keeps sensitive data unreadable |
| Vulnerability Scanners | Finds and reports weaknesses | Nessus, Qualys | Fixes risks before attackers find them |
| SIEM | Centralized logging and threat detection | Splunk, LogRhythm | Enables fast incident response |
Choose Smarter, More Reliable Security with Bakersfield Networks
Choosing the right mix of network defenses can feel overwhelming. But with the right partner, it becomes manageable.
At Bakersfield Networks, we help you identify, implement, and maintain the types of network security that best protect your business
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We support over 300 clients with a 98% customer retention rate. Our team focuses on long-term protection, not just one-time fixes.
Contact us today to schedule a consultation and strengthen every layer of your network security.