Fortinet NSE 5 key terms
Fortinet NSE 5 · Get comfortable with the vocabulary.
- Security Fabric
- Related: FortiLink, Fabric Connector, Security Rating
Fortinet's integrated architecture that links FortiGate firewalls with other Fortinet and partner products so they share topology, logs, and threat intelligence and can be managed and automated as one system.
- Security Rating
- Related: Security Fabric, Administrative Access
A scored checklist on FortiGate that audits configuration against best practices across areas such as system, WAN, logging, and segmentation, showing pass, fail, or uncovered items with remediation guidance.
- VDOM (Virtual Domain)
- Related: Administrative Domain, Inter-VDOM Link
A separate, independent configuration and routing instance inside a single FortiGate, letting one physical device serve multiple tenants or functions with isolated policies, interfaces, and administrators.
- Administrative Domain
- Related: VDOM (Virtual Domain), Admin Profile
A setting that restricts an administrator account to managing only specified VDOMs, optionally with a profile that limits which commands and objects the account can view or change.
- Admin Profile
- Related: Administrative Domain, Two-Factor Authentication
A permission template assigned to an administrator account that grants read-write or read-only access per configuration area, such as firewall policy, routing, or system settings.
- Two-Factor Authentication
- Related: Admin Profile, LDAP Authentication
Login protection that requires a second proof of identity beyond a password, commonly a time-based token from FortiToken or an SMS or email code, applied to administrator or user accounts.
- LDAP Authentication
- Related: FSSO (Fortinet Single Sign-On), User Group
Method where FortiGate forwards user credentials to a directory server such as Active Directory or another LDAP server and uses the returned group membership for identity-based policy decisions.
- FSSO (Fortinet Single Sign-On)
- Related: LDAP Authentication, User Group
Integration with a domain controller or collector agent that learns which user is logged on to which workstation, so FortiGate applies identity-based policy without prompting for credentials again.
- User Group
- Related: LDAP Authentication, FSSO (Fortinet Single Sign-On)
A named collection of local users, remote directory groups, or devices used as a source or destination match in firewall policy, enabling policy to follow identity rather than IP address.
- Firewall Policy
- Related: Policy Route, Security Profile Group, NAT (Network Address Translation)
The central rule object that matches traffic by incoming and outgoing interface, source, destination, service, and schedule, then applies an action such as accept or deny plus security profiles and logging.
- Security Profile Group
- Related: Firewall Policy, IPS (Intrusion Prevention System), SSL Inspection
A reusable bundle of inspection profiles, such as antivirus, web filter, IPS, application control, and SSL inspection, that can be attached to many policies at once for consistent enforcement.
- IPS (Intrusion Prevention System)
- Related: Security Profile Group, SSL Inspection, Application Control
Signature-based inspection that detects and can block known exploit and attack patterns in traffic, with the option to reset or drop offending sessions and log the matched signature.
- Application Control
- Related: IPS (Intrusion Prevention System), Web Filter
Inspection that identifies applications by behavior and signature rather than by port, allowing policy to permit, block, or shape specific applications and categories regardless of the ports they use.
- Web Filter
- Related: Application Control, SSL Inspection, Explicit Web Proxy
Profile that classifies and controls web destinations by category and reputation, supports URL allow and block lists, and can apply actions such as block, warning, or authentication prompt.
- SSL Inspection
- Related: Web Filter, IPS (Intrusion Prevention System), Certificate Inspection
Decryption of TLS traffic so security profiles can inspect the payload, using either a forward proxy with a certificate authority certificate or certificate inspection that reads only the server name.
- Certificate Inspection
- Related: SSL Inspection, Deep Inspection
A lighter SSL inspection mode that does not decrypt payload; it reads the server certificate or TLS handshake to extract the server name and apply category and allow or block decisions.
- Deep Inspection
- Related: SSL Inspection, Certificate Inspection
SSL inspection mode where FortiGate terminates and re-establishes TLS using its own signing certificate, enabling full payload scanning by antivirus, IPS, and other profiles.
- NAT (Network Address Translation)
- Related: Central NAT, IP Pool, Virtual IP
Rewriting of source or destination addresses and ports as packets traverse the firewall, used to share public addresses, publish internal servers, or redirect traffic to a proxy or load balancer.
- Central NAT
- Related: NAT (Network Address Translation), IP Pool
A NAT mode where translation is defined in dedicated NAT rules referenced by policy, instead of per-policy NAT settings, giving reusable and ordered source and destination translation behavior.
- IP Pool
- Related: NAT (Network Address Translation), Central NAT
A defined range or block of addresses used as the translated source for outbound NAT, with options for overloading, fixed port ranges, and address pairing behavior.
- Virtual IP
- Related: NAT (Network Address Translation), Firewall Policy
A destination NAT object that maps a public address and port to an internal server address and port, optionally including a load-balance group of multiple real servers.
- Policy Route
- Related: Firewall Policy, SD-WAN
A rule evaluated before the routing table that forwards matching traffic out a chosen interface and next hop, commonly used for source-based routing, dual WAN steering, or protocol-based redirection.
- SD-WAN
- Related: Policy Route, SLA Health Check
Feature that groups multiple WAN links into one logical interface and selects links per traffic rule using measured performance such as latency and jitter, with health checks and failover.
- SLA Health Check
- Related: SD-WAN
A probe that periodically tests reachability and quality of a WAN link, such as latency and packet loss, so SD-WAN rules can prefer or avoid that member link.
- Inter-VDOM Link
- Related: VDOM (Virtual Domain)
A virtual point-to-point interface pair connecting two VDOMs on the same device, allowing traffic to pass between them under firewall policy like a physical cable would.
- Virtual Router (VRF)
- Related: VDOM (Virtual Domain), Policy Route
An isolated routing table instance on FortiGate that keeps overlapping address ranges separate, with interfaces and static or dynamic routes assigned to a specific virtual router.
- HA (High Availability)
- Related: FGCP (FortiGate Clustering Protocol), HA Override
Deployment of two or more FortiGates as a cluster that synchronizes configuration and sessions, with one primary forwarding traffic and others ready to take over on failure.
- FGCP (FortiGate Clustering Protocol)
- Related: HA (High Availability), HA Override
Fortinet's proprietary clustering protocol that elects the primary, synchronizes configuration and connection state, and manages failover and link monitoring among cluster members.
- HA Override
- Related: HA (High Availability), FGCP (FortiGate Clustering Protocol)
A cluster setting that lets device priority decide the primary instead of uptime and monitor status; when disabled, the longest-running healthy unit keeps the primary role.
- Session Synchronization
- Related: HA (High Availability), FGCP (FortiGate Clustering Protocol)
HA feature that replicates connection state tables to secondary units so established sessions survive a failover, with options to sync only certain traffic or firewall sessions.
- Virtual MAC
- Related: HA (High Availability), FGCP (FortiGate Clustering Protocol)
A MAC address that an HA cluster presents on its interfaces so peers and switches keep sending traffic to the same address after a failover to another cluster member.
- FortiLink
- Related: Security Fabric, Fabric Connector
A management mode where a FortiGate port controls supported FortiSwitch and FortiAP devices, letting the firewall authorize, configure, and monitor them as part of the Security Fabric.
- Fabric Connector
- Related: Security Fabric, FortiLink
A configuration object that authorizes another device to join the Security Fabric, defining its role and enabling exchange of logs, topology, and threat information with the root FortiGate.
- VLAN Interface
- Related: Software Switch, Zone
A logical interface that carries traffic for one 802.1Q VLAN tag on a physical or aggregate link, allowing multiple separated networks to share one port.
- Software Switch
- Related: VLAN Interface, Zone
A virtual switch object that groups several interfaces so they act as one Layer 2 broadcast domain with a shared IP address, useful for combining ports or wireless and wired segments.
- Zone
- Related: VLAN Interface, Firewall Policy
A named grouping of one or more interfaces that can be referenced as a single source or destination in policy, simplifying rules when many ports serve the same role.
- Static Route
- Related: Policy Route, Virtual Router (VRF)
A manually configured path that tells FortiGate which next-hop gateway or interface to use for a destination prefix, with optional distance and priority for selection and backup.
- Explicit Web Proxy
- Related: Web Filter, SSL Inspection
A proxy service on FortiGate that clients are configured to send web requests to directly, enabling user authentication and web filtering without transparent interception of the connection.
- Administrative Access
- Related: Admin Profile, Security Rating
The set of protocols, such as HTTPS, SSH, ping, or SNMP, enabled on a specific interface, controlling how administrators and monitoring systems can reach the device.