Firewalls: Top-level network security for businesses
Professional firewalls protect corporate networks from cyberattacks, unauthorized access, and malware. Whether you need classic firewall hardware, modern next-generation firewalls (NGFW), or specialized solutions such as Sophos XG, FortiGate, or Cisco ASA, it-market offers powerful security solutions for businesses of all sizes.
Do you have questions about our products in this category?
Our team will advise you extensively on your questions:
+49 (0) 39203 96 96 100What is a firewall and what types are there?
A firewall is a security component that controls data traffic between internal networks and the Internet. It protects sensitive information, prevents unauthorized access, and filters harmful content.
There are different types:
- Hardware firewalls (HW firewalls): Dedicated devices for maximum performance and isolation
- Software firewalls: Installed as an application on an operating system
- Next-generation firewalls (NGFW): Combine stateful inspection with deep packet inspection, application control, and malware filtering
Which firewall is right for your company?
The requirements for a network firewall depend heavily on the industry, company size, and existing IT infrastructure. Here is an overview of proven models and manufacturers:
Sophos Firewall
- Sophos XG / SG series (SG115, SG135, SG230): Ideal for SMEs with centralized management via Sophos Central
- Sophos UTM: Classic unified threat management with a simple user interface
- Advantages: Clearly structured interface, versatile protection functions, good scalability
Fortinet Firewall
- FortiGate 100F and other series: High-performance NGFW for medium to large networks
- Integrated SD-WAN, IPS, antivirus, and application control
- Centralized management via FortiManager
Cisco Firewall
- Cisco ASA (Adaptive Security Appliance): Robust solution with VPN, IDS/IPS, and URL filtering functions
- Cisco Meraki Firewall: Cloud-managed security solution with easy scaling
Other manufacturers
- Palo Alto Firewall: Maximum security through App-ID and User-ID technology
- Barracuda Firewall: Powerful with integrated web filtering and malware protection
- Lancom Firewall: GDPR-compliant solutions “Made in Germany”
- Securpoint Firewall: Particularly well established for use in schools and government agencies
Managed Firewall Services: Take advantage of our optional Managed Service Firewall offerings – ideal for companies without their own IT security team.
What to look for when buying a firewall?
Before purchasing a firewall, you should consider the following aspects:
- Throughput rate (firewall throughput) – depends on data volume and number of users
- VPN performance – important for home office and branch office connections
- Licensing model – many providers rely on subscriptions (e.g., Sophos, Fortinet)
- Number of ports – for flexible network expansion
Firewalls: new, used, and refurbished at it-market
At it-market, you will find tested firewalls for all common manufacturers and requirements. We offer new, used, and refurbished firewalls with tested quality.
Benefit from:
- 3-year warranty for companies
- Up to 2,500€ buyer protection
- Short delivery times
Do you have any questions? Our sales team will be happy to answer any questions you may have about IT hardware and IT remarketing.