Firewall Setup and Network Security
With FortiGate and pfSense / OPNsense, we set up firewalls that protect your business network against external threats and secure remote access.
- Fortinet FortiGate
- pfSense
- OPNsense
- IPsec / SSL VPN
- VLAN / 802.1Q
sample rule set
ALLOW VPN users → Servers
ALLOW Office → Internet
BLOCK Guest → Office, Servers
BLOCK Internet → RDP (3389)
- Enterprise Option
- FortiGate
- Hardware firewall managed with licensed security services
- Open-Source Option
- pfSense / OPNsense
- Flexible, powerful configuration without licensing costs
- Branch Connectivity
- Site-to-Site VPN
- Encrypted access for branches and remote employees
- Handover
- Written Documentation
- The rule set and network diagram are documented and handed over
What does the setup include?
Needs Analysis
Number of users, line speed, branch structure and applications in use are reviewed; the device is sized accordingly.
Rule Configuration
Instead of a default-open setup, a rule set is built that allows only the traffic that's needed.
VPN Setup
SSL / IPsec VPN for remote employees and site-to-site tunnels between branches are configured.
Network Segmentation (VLAN)
Guest network, camera system, servers and office computers are split into separate segments.
Content and Application Filtering
Malicious site categories and unwanted applications are blocked by policy.
Logging and Monitoring
Traffic logs are kept; suspicious activity and bandwidth usage are reported.
Platforms We Work With
$ platform --bilgi
Fortinet FortiGate
Hardware firewall with UTM, IPS and web filtering for corporate networks
1 / 5
Firewall Setup Process
Setup is scheduled outside business hours; downtime during the transition is kept to a minimum.
Step 1
Discovery
The current network structure, internet lines and access needs are mapped out.
- Network diagram mapping
- User and device inventory
- Remote access needs
- Device sizing
Step 2
Design
Segments, rule set and VPN structure are planned in writing.
- VLAN plan
- Rule matrix
- VPN architecture
- Approval
Step 3
Setup and Cutover
The device is configured, and the network is moved to the new structure at the scheduled time.
- Configuration
- After-hours cutover
- Connectivity testing
- Rollback plan
Step 4
Handover and Support
Documentation is handed over; updates and rule changes are tracked.
- Rule and diagram documentation
- Administrator training
- Configuration backup
- Support
Who Needs a Firewall Setup?
The need scenarios we encounter most often.
Offices Running Behind a Modem
On networks where the operator's modem is the only protection, a controlled security layer is put in place.
Remote Teams
Secure access to company resources is provided via VPN instead of opening ports.
Multi-Branch Businesses
Branches connect to headquarters via encrypted tunnels and are managed from a single point.
Companies Hosting Servers
Externally exposed services are kept in a separate segment, and their access to the internal network is restricted.
Frequently Asked Questions
A firewall inspects traffic between your internal network and the internet according to rules. Only permitted connections get through; unauthorized access attempts from outside and traffic to malicious sites are blocked. It also provides secure VPN access for remote employees.
Modems perform basic address translation, but their features such as detailed rule management, network segmentation, content filtering and logging are limited. If you have business data and externally exposed services, a separate firewall layer is recommended.
FortiGate suits organizations that want licensed security services, vendor support and centralized management. pfSense / OPNsense is a strong option for businesses that want a flexible solution without licensing costs and can use their own hardware. The choice depends on the number of users, budget and support expectations.
The cutover is planned and usually scheduled outside business hours. Downtime is limited to the short period when the device is brought onto the network; a rollback plan to the old setup is kept ready in case of problems.
The main cost factors are the number of users and devices, internet line speed, number of branches, license term and scope for FortiGate, and the hardware to be used for pfSense. A written quote is provided after discovery.
Yes. We provide support for software updates, rule changes and new user / VPN definitions. A backup and documentation of the configuration are also handed over to you.
Firewall Setup: request a project quote
Tell us about your project and our experts will prepare a tailored proposal and price quote as soon as possible.
24 hours
response time
Free
first consultation