Network security and firewalls: your business's first line of defence.
The firewall is the first layer that inspects traffic entering and leaving your network. This guide explains the core components of network security and what to consider when choosing the right firewall.
What is network security?
Network security is the set of measures that controls who connects to the corporate network, with which devices and applications, inspects traffic and blocks attacks.
The main measures are the firewall, web and URL filtering, intrusion detection and prevention (IPS), VPN and network segmentation.
What does a next-generation firewall deliver?
A classic firewall decides by port and IP address. A next-generation firewall recognises the application, the user and the content, and combines capabilities such as web filtering, intrusion prevention and VPN in a single device.
For SMBs, what matters is that these capabilities can be set up without specialists and that all locations can be managed from a single console.
Components of network security
| Component | What does it do? |
|---|---|
| Web and URL filtering | Blocks access to malicious and unwanted sites. |
| Intrusion detection and prevention (IPS) | Detects and stops known attack patterns in traffic. |
| VPN | Provides encrypted connections for branches and remote workers. |
| Guest network (hotspot) | Separates guest access from the corporate network and logs it. |
| Device detection | Makes devices that connect without authorisation visible. |
| Central management | Lets you manage all locations from a single console. |
What to look for when choosing a firewall
- Number of concurrent devices and users
- Number of branches and VPN requirements
- Guest network and access logging obligations
- Licence term and renewal model
- Central or cloud-based management console
- On-site installation and Turkish-language support
Related solutions and products
Kuantum Pi Firewalls
Eight models from 25 devices to campus scale; web/URL filtering, hotspot and VPN.
Explore →Cybersecurity Packages
Firewall, EDR, DLP, backup, VPN and hotspot for 5–20 users in a single package.
Explore →Network and Endpoint Protection
Managed firewall, WAF, IPS, EPP/EDR, IAM, MFA and DLP, with Kuantum Pi and DEBsec.
Explore →Law No. 5651 Compliance
Solutions for the log recording and retention obligations under Law No. 5651.
Explore →Frequently asked questions
Which firewall model suits an SMB?
The choice depends on the number of devices and users, the number of branches and guest network needs. The Kuantum Pi family offers eight models, from 25 devices to campus scale.
Is a firewall enough on its own?
No. A firewall protects the network layer but cannot stop endpoint threats and email attacks on its own. It should be combined with EDR and email security.
Is logging mandatory for guest Wi-Fi?
In Türkiye, Law No. 5651 and related regulations may require organisations that provide internet access to keep access logs. We recommend confirming your scope with your legal team; we build the technical infrastructure.
Where can I buy Kuantum Pi?
TurnCloudON is Kuantum Pi's authorised distributor. You can request a quote through the quote basket or join our reseller network.
Other guides
Endpoint Security and EDR
What are endpoint security and EDR, how do they differ from antivirus, and where do XDR and DLP fit? Selection criteria for SMBs and enterprises, and DEBsec EDR.
Read the guide →GRC Software
What is GRC (governance, risk and compliance) software, why move away from spreadsheets, and how does it help prepare for ISO 27001, NIS2 and DORA? POC with SecureChapter eCISO.
Read the guide →CISO, vCISO and eCISO
What is a CISO, when does a virtual CISO (vCISO) make sense, and what does an eCISO provide? Three ways to establish information security leadership, and SecureChapter eCISO.
Read the guide →A no-commitment start in three steps.
Discovery call
We spend 45 minutes understanding your environment and priorities. Free of charge.
Free initial assessment
After the meeting, a one-page note with initial findings and recommendations; the findings are yours to keep. A full health check and risk report are part of our accelerator packages.
Package or service
Start with an accelerator package or go straight to managed services.