Fortinet FCSS_EFW_AD-7.4 Exam With Confidence Using Practice Dumps

When designing anADVPN (Auto-Discovery VPN) networkfor alarge enterprisewith spokes that havevarying numbers of internet links, the main challenge is tominimize the number of peer connections and routesat the hub while maintainingscalability and efficiency.

Using a dynamic routing protocol (such as BGP or OSPF) with loopback interfaces helps in several ways:

●Reduces the number of peer connectionsat the hub byusing a single loopback address per spokeinstead of individual physical interfaces.

●Enables simplified route advertisementby dynamically learning and propagating routes instead of manually configuring static routes.

●Supports multiple internet links per spokeefficiently, as dynamic routing can automatically adjust to the best available path.

●Allows seamless failoverif a spoke’s internet link fails, ensuring continuous connectivity.

From theOSPF status output, the key information is:

●"This router is an ASBR"→ This means the FortiGate is acting as anAutonomous System Boundary Router (ASBR).

● AnASBRis responsible for injectingexternal routing informationinto OSPF from another routing protocol (such as BGP, static routes, or connected networks).

TheInternet Service Database (ISDB)in FortiGate is used to enforce content filtering atLayer 3 (Network Layer) and Layer 4 (Transport Layer)of the OSI model by identifying applications based on theirpredefined IP addresses and ports.

FortiGate has a predefined list of all IPs and ports for specific applications downloaded from FortiGuard:

● FortiGate retrieves and updates apredefined listof IPs and ports for different internet services fromFortiGuard.

● This allows FortiGate to block specific services atLayer 3 and Layer 4without requiring deep packet inspection.

The ISDB blocks the IP addresses and ports of an application predefined by FortiGuard:

● ISDB works by matching traffic to knownIP addresses and portsof categorized services.

● When an application or service is blocked, FortiGate prevents communication bydenying traffic based on its destination IP and port number.