Video

Creating a DMZ on pfSense

Learn how to properly set up a demilitarized zone (DMZ) in pfSense to safely expose external-facing services while protecting your internal network. This is helpful for those who need to expose services to the internet while maintaining network security. In this video, we show you how to properly isolate your DMZ from your trusted networks using pfSense's powerful firewall capabilities.

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Frequently Asked Questions About DMZ in pfSense

What is a DMZ in a firewall?

A DMZ (demilitarized zone) is a segregated network segment that hosts public-facing services while protecting the internal network. It acts as a buffer zone between the trusted internal network (LAN) and untrusted external networks (WAN), allowing controlled access to public services while maintaining security.

Does pfSense have a DMZ?

Yes, pfSense supports DMZ configuration through dedicated interfaces and firewall rules. You can create a DMZ by adding a new interface, configuring static IPv4 addressing, and implementing appropriate firewall rules to isolate it from your internal network while allowing necessary external access.

What does enabling DMZ on a router do?

Enabling a DMZ creates a separate network segment where you can place servers and services that need to be accessible from the internet. It protects your internal network by isolating potentially vulnerable public-facing services from your private LAN while still allowing them to communicate with the internet.

Should you enable DMZ?

You should enable a DMZ if you're hosting public-facing services like web servers, mail servers, or gaming servers. It's essential for businesses and organizations that need to expose services to the internet while maintaining internal network security. However, if you don't host public services, a DMZ may not be necessary.

How do I configure a DMZ network using pfSense?

To configure a DMZ in pfSense:

1. Add a new interface under Interfaces > Assignments
2. Configure static IPv4 addressing for the DMZ subnet
3. Enable the interface
4. Set up DHCP if needed
5. Create firewall rules to:
   • Allow specific incoming traffic from WAN
   • Block access to internal networks
   • Permit necessary outbound access

How do I set up a DMZ on pfSense for hosting public services securely?

To securely host public services in a pfSense DMZ:

1. Assign a dedicated network interface for the DMZ
2. Configure a separate subnet (e.g., 192.168.2.0/24)
3. Create restrictive firewall rules that:
   • Allow only required ports for your services
   • Block all access to LAN networks
   • Enable specific outbound access for updates
4. Use port forwarding to direct external traffic to DMZ servers
5. Implement additional security measures like IDS/IPS

How can I access a web server on DMZ with public IP of WAN?

To access a DMZ web server via WAN:

1. Configure port forwarding rules on pfSense
2. Direct incoming traffic on ports 80/443 to your DMZ web server
3. Create firewall rules allowing WAN access to these ports
4. Ensure your DMZ server has proper static IP configuration
5. Configure DNS records to point to your WAN IP address

Should LAN and DMZ networks be connected?

No, LAN and DMZ networks should remain separated for security. The primary purpose of a DMZ is to isolate public-facing services from your internal network. If you need specific communications between LAN and DMZ, create carefully restricted firewall rules allowing only essential traffic.