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| Section | Objectives |
|---|---|
| Identity-Aware Security Policies | - Identity concepts
|
| Juniper Advanced Threat Prevention (ATP) Cloud | - Operations
|
| High Availability (HA) Clustering | - HA fundamentals
|
| Security Director (Junos Space) | - Management platform
|
| Intrusion Detection and Prevention (IDP) | - IDP concepts and architecture
|
| IPsec VPN | - Operations and troubleshooting
|
| SSL Proxy | - SSL inspection concepts
|
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NEW QUESTION # 17
You need to secure communications from a mobile command center which uses a 5G mobile ISP behind CGNAT to an SRX Series Firewall at headquarters.
Which two actions should be performed on the SRX Series Firewall in this scenario? (Choose two.)
Answer: B,D
Explanation:
The correct answers are A and D. A mobile command center using a 5G ISP behind CGNAT is operating behind dynamic address translation. For IPsec to work reliably through NAT, the SRX must support NAT Traversal, which encapsulates IKE and ESP traffic in UDP/4500 after NAT is detected. Juniper states that NAT-T is used when NAT devices exist in the datapath and that NAT keepalives are required because NAT devices age out UDP translations. Juniper's Security Director VPN workflow also specifically says to enable NAT-T when the dynamic endpoint is behind a NAT device.
DPD is also required because mobile and carrier-grade NAT connections can disappear, roam, or become stale without a clean tunnel teardown. Juniper defines Dead Peer Detection as the method used by IPsec peers to verify whether the remote peer is still present and responsive by sending encrypted IKE notification payloads and waiting for acknowledgements. Option B is not the best answer because IKEv1 aggressive mode is weaker and does not provide identity protection; Juniper also notes that aggressive mode applies only to IKEv1. Option C is invalid because IKEv2 aggressive mode does not exist. Reference topics: IPsec VPN, NAT-T, CGNAT, dynamic endpoints, DPD, IKE peer availability.
NEW QUESTION # 18
Which two statements about proxy IDs are correct? (Choose two.)
Answer: B,D
Explanation:
The correct answers are B and C. In Junos route-based IPsec VPNs, the default proxy ID is broad: local 0.0.0.0
/0, remote 0.0.0.0/0, and service any. This default behavior allows routed traffic entering the secure tunnel interface to determine what is protected by the VPN rather than requiring a narrow policy-based encryption domain. Juniper's IPsec VPN configuration guidance also states that proxy IDs are used in Phase 2 negotiations, and that a proxy ID mismatch is one of the common causes of Phase 2 failure. For interoperability with some third-party VPN peers, Juniper notes that proxy IDs may need to be manually configured to match the peer.
Option A is wrong because proxy IDs can override default route-based behavior when manually configured, especially when a peer requires specific local and remote protected subnets. Option D is wrong because proxy IDs are not created during IKE Phase 1. Phase 1 builds the secure IKE channel; proxy IDs belong to Phase 2
/IPsec SA negotiation, where the peers agree on traffic selectors for encrypted traffic. Reference topics: IPsec VPN, route-based VPNs, proxy IDs, Phase 2 negotiation, traffic selectors, third-party VPN interoperability.
NEW QUESTION # 19
Exhibit
Using the information from the exhibit, which statement is correct?
Answer: C
NEW QUESTION # 20
You are asked to configure your company SRX Series device to use identity-aware security policies.
Information about your Active Directory network is shown in the exhibit.
In this scenario, why must you configure JIMS instead of Active Directory as an identity source?
Answer: A
Explanation:
The correct answer is D. You have too many domain controllers. The exhibit shows 15 Active Directory domain controllers. Juniper's integrated Active Directory identity-source configuration for SRX identity- aware firewall supports a limited number of domain controllers; Juniper documentation states that an SRX Series device can configure a maximum of 10 domain controllers for Active Directory identity-source integration. Because this environment has 15 domain controllers, the direct Active Directory identity-source method exceeds the supported scale and JIMS must be used instead.
Option A is wrong because SRX devices can use Active Directory directly as an identity source; JIMS is not the only possible method. Option B is wrong because 1,500 users does not exceed the relevant identity-source scale shown here; Juniper documentation also notes probe functionality support well above this number.
Option C is wrong because the issue being tested is not the Windows Server version. JIMS is designed for larger identity-aware deployments and can centralize identity collection from Active Directory, domain controllers, Exchange servers, and syslog sources, then provide identity mappings to SRX firewalls. Juniper's JIMS datasheet shows much higher scale, including up to 100 active directories, 25 domains, and 500,000 user entries. Reference topics: Identity-Aware Security Policies, Active Directory identity source limits, JIMS scalability, domain controller scale limitations.
NEW QUESTION # 21
While working on an SRX firewall, you execute the show security policies policy-name <name> detail command.
Which function does this command accomplish?
Answer: C
Explanation:
The function that the show security policies policy-name <name> detail command accomplishes is showing policy counters for a configured policy. Policy counters are statistics that indicate how many times a policy has been matched by traffic and what actions have been taken by the policy. Policy counters can help you monitor and troubleshoot the performance and effectiveness of your security policies. The show security policies policy-name <name> detail command displays detailed information about a specific policy, such as its source zone, destination zone, description, state, hit count, byte count, packet count, action count, and session count.
Reference: = show security policies, show security policies information, [SRX] How to troubleshoot a security policy that is not passing data
NEW QUESTION # 22
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