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Fortinet NSE4_FGT_AD-7.6 Practice Test 19

Question 180

An overbroad central SNAT rule was modified to exclude a site-to-site IPsec destination. Which packet-level proof is needed before closing the ticket?

  1. The Internet browsing clients still use public NAT from WAN1.
  2. The tunnel appears Up but no traffic is generated.
  3. A new protected LAN flow enters the IPsec interface with the expected 10.1.0.0/24 source, matches the intended Phase 2 selectors and reaches the peer.
  4. An administrator can ping the FortiGate's management interface.

Explanation

Correct Answer

C:

The actual source address must remain within the protected subnet for selectors and peer policies; an established IKE SA alone is insufficient.

Incorrect Answers

A:

Working Internet SNAT is not evidence that VPN traffic was exempted from that mapping.

B:

An established SA does not prove the packet source was not translated.

D:

Local device management access is not traffic across the VPN.

Question 181

An organization requires named AD administrators to log in to a FortiGate, with privileges varying by directory group. Which FortiOS 7.6.0 design provides controlled remote admin authentication?

  1. Configure an LDAP server connection and an appropriate admin group/account mapping with a least-privilege administrator access profile.
  2. Add the AD server as an outbound SNAT pool.
  3. Grant the default super_admin profile to all authenticated users.
  4. Configure an FSSO forwarding policy only.

Explanation

Correct Answer

A:

LDAP authenticates the named directory user while the FortiGate access profile defines allowed configuration and monitoring operations.

Incorrect Answers

B:

NAT mapping has no effect on LDAP administrator credentials or role permissions.

C:

Successful directory authentication does not justify unrestricted administrator privileges.

D:

FSSO for ordinary users does not by itself create a remote administrative login/account mapping.

Question 182

FortiGate user authentication configured for RADIUS reports timeouts. The server is at 10.9.1.5 and its UDP auth service is reachable only from the dedicated management network. What should be checked before modifying user group rules?

  1. Reorder the outbound IPv4 source-NAT policy for office browsing.
  2. Check FortiGate-to-RADIUS network reachability, source interface/IP, server port and shared secret with a supported authentication test.
  3. Disable all RADIUS logs so the request can complete.
  4. Increase the FortiGate web-filter category threshold.

Explanation

Correct Answer

B:

Timeouts occur before a returned group can be processed; endpoint transport, credentials and actual RADIUS response are the first boundaries.

Incorrect Answers

A:

Forwarded Internet SNAT does not diagnose the separate RADIUS authentication transaction.

C:

Logging does not cause or repair absent server responses.

D:

URL filtering categories do not determine RADIUS transport or shared-secret acceptance.

Question 183

An auditor must read interface and traffic-policy configuration but must not commit changes. Which control is appropriate for the named administrator account?

  1. Set the same super_admin role but change the account display name to Auditor.
  2. Disable traffic logging on every security policy.
  3. Add the account's IP address to an outbound firewall address pool.
  4. Assign a FortiGate access profile that grants the required read permissions but denies write privileges.

Explanation

Correct Answer

D:

Authentication identifies the administrator, while the per-account access profile controls which FortiOS configuration areas may be changed.

Incorrect Answers

A:

An account name does not reduce the configured privilege profile.

B:

Forwarding log settings do not restrict administrative configuration changes.

C:

Packet source translation cannot grant a read-only GUI/CLI role.

Question 184

A FortiGate administrator is disabled in Active Directory, but can still sign in using an independently configured local administrator account with the same name. Which control addresses the residual privilege?

  1. Modify the destination port of an IPsec VPN.
  2. Turn off FortiGuard signature updates.
  3. Disable or revoke the separate local FortiGate administrator account and audit other fallback login methods.
  4. Clear only the external LDAP group cache while leaving local login enabled.

Explanation

Correct Answer

C:

Disabling the remote directory identity does not automatically revoke a distinct locally validated account; each authentication backend must be governed.

Incorrect Answers

A:

VPN destination ports do not revoke a local FortiGate administrative account.

B:

Subscription update traffic does not disable the still-active local administrator identity.

D:

Local credentials can still authenticate independently of remote group state.

Question 185

A guest network must display an authentication portal before granting permitted web access. A simple source-address accept rule bypasses the portal entirely. Which identity mechanism is needed?

  1. Enable HTTPS administrative access for guests.
  2. Create only a VIP for the guest client address.
  3. Increase the DHCP lease time for guests.
  4. Configure a supported FortiGate firewall authentication/captive-portal flow with an appropriate user group on the intended policy.

Explanation

Correct Answer

D:

A captive portal binds a user authentication step to eligible forwarding access; a plain IP accept cannot prove user identity.

Incorrect Answers

A:

A firewall management login is not a user captive portal and exposes the appliance itself.

B:

DNAT publication cannot require an authenticated user group.

C:

IP leasing does not establish who is authorized to browse.

Question 186

FortiGate LDAP authentication succeeds for a user, but group resolution misses a nested group outside the configured narrow search base. Which directory setting should be reviewed?

  1. Set the firewall's public SNAT pool to match the user's LAN.
  2. Enable IPS signature blocking for all LDAP packets.
  3. Change only the time zone shown in traffic logs.
  4. Review the configured LDAP base distinguished name, search scope and supported group-membership lookup against actual AD hierarchy.

Explanation

Correct Answer

D:

A valid password bind does not guarantee the server query reaches the branch of AD containing the required nested group.

Incorrect Answers

A:

Address translation cannot expand LDAP search scope within directory objects.

B:

Blocking the authentication traffic worsens directory resolution rather than finding missing groups.

C:

Log display timezone does not choose an LDAP base DN or nested group search behavior.

Question 187

A RADIUS server returns Access-Accept for a user, but the FortiGate identity policy still reports that the user does not belong to its required role. Which next control matters?

  1. Verify the RADIUS group/attribute mapping and the FortiGate user-group reference used by the matching security policy.
  2. Increase the RADIUS shared-secret length after successful Access-Accept.
  3. Enable local-in HTTPS administration on WAN1.
  4. Add an unrelated outbound route with lower distance.

Explanation

Correct Answer

A:

An Access-Accept confirms authentication, not automatic membership in the group expected by a particular forwarding policy.

Incorrect Answers

B:

The server already authenticates; the error is authorization/group mapping, not basic request integrity.

C:

An administrative listener is unrelated to policy-based user group membership.

D:

Routing preference cannot turn a successful login into the policy-required group.

Question 188

An untrusted machine reaches the FortiGate login page on port1 despite the company allowing management only from 10.50.0.0/24. What must be tightened?

  1. Limit interface management services and apply administrator trusted-host and applicable local-in source restrictions.
  2. Configure a forward deny for Internet traffic to public HTTPS websites.
  3. Change the VPN peer's IKE lifetime.
  4. Increase DNS resolver cache size.

Explanation

Correct Answer

A:

Fortinet distinguishes local-in management listeners from forwarded user traffic; host constraints protect the management plane directly.

Incorrect Answers

B:

This would disrupt user browsing and may not restrict HTTPS addressed to the FortiGate itself.

C:

IPsec rekey timing does not control who can initiate an administrator login.

D:

DNS caching does not restrict the source IP of the GUI service.

Question 189

A user loses an approved directory role, but their current authenticated firewall session still authorizes the old group. Select TWO controls that together close this stale-authorization window.

  1. Increase the existing firewall identity-session lifetime.
  2. Refresh or expire the FortiGate's effective authentication/group mapping for that user.
  3. Verify the directory's current group membership is updated and treated as the authorization source of truth.
  4. Keep the old privileged group in a broad default policy.
  5. Change the FortiGate web GUI wallpaper and leave auth state untouched.

Explanation

Correct Answer

B:

Old cached identity state must no longer satisfy the privileged firewall policy.

C:

The authoritative identity record must reflect the role removal before enforcing a new policy mapping.

Incorrect Answers

A:

A longer cache prolongs the obsolete role instead of removing it.

D:

An unrestricted fallback would preserve the very access that was revoked.

E:

Cosmetic management changes do not revoke cached group membership.

Question 190

An AD user successfully authenticates through the FortiGate LDAP server test, but FortiGate admin login is still rejected because no configured remote administrator mapping permits the user group. Which boundary is missing?

  1. A source NAT object that translates the office subnet.
  2. A central SNAT rule on WAN2.
  3. An authorized remote-admin account/group mapping with a FortiGate access profile for that identity.
  4. An application-control block override.

Explanation

Correct Answer

C:

A working LDAP bind proves credentials, but the firewall still needs its administrator authorization and access-profile association.

Incorrect Answers

A:

SNAT does not provision remote administrator identities or privileges.

B:

Outbound translation has no relation to remote-admin account authorization.

D:

Application signature categories cannot grant FortiGate administrator login rights.


Fortinet NSE 4 - FortiOS 7.6 Administrator (NSE4_FGT_AD-7.6) Practice Tests
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