Managed Firewall - Sample Network Diagrams
A - Typical Firewall Configuration
In a typical firewall configuration, a firewall is placed between the Internet and the organization's servers or office computers. The firewall will block all unauthorized inbound and/or outbound traffic.
B - Firewall with Demilitarized Zone (DMZ) Configuration
In this scenario, server "A" has special requirements which might make it more vulnerable to intrusion. For additional security, Server "A" is placed on a separate network segment with its own firewall rules. If a hacker manages to compromise server "A", the hacker will still not be able to gain access to the other servers because they are on a different network segment protected by their own firewall rules.
C - Firewall with Failover Configuration
In this scenario, a backup firewall is installed. The backup device will continuously monitor the "health" of the primary firewall. If the primary firewall fails, the backup firewall will assume the IP address of the failed primary firewall and take over the firewall duties. You might choose to install a backup firewall if your Internet service is mission critical and you cannot tolerate extended periods of downtime due to hardware failure.
D - Virtual Private Network (VPN) Configuration
In this scenario, a VPN connection (the red dotted lines) is configured between:
- Office "A" and Office "B"
- The home user and Office "A"
Each VPN connection is transported over the public Internet in a secure, encrypted tunnel.
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