Pass the Juniper JNCIP-SEC JN0-636 Questions and answers with CertsForce

The three profiles that are configurable in a threat prevention policy are infected host profile, C&C profile, and malware profile. A threat prevention policy is a feature of Juniper ATP Cloud that provides protection and monitoring for selected threat profiles, including command and control servers, infected hosts, and malware. Using feeds from Juniper ATP Cloud and optional custom feeds that you configure, ingress and egress traffic is monitored for suspicious content and behavior. Based on a threat score, detected threats are evaluated and action may be taken once a verdict is reached. You can create a threat prevention policy by selecting one or more of the following profiles:

Infected host profile: This profile detects and blocks traffic from hosts that are infected with malware or compromised by attackers. You can configure the threat score thresholds and the actions for different levels of severity. You can also enable Geo IP filtering to block traffic from or to specific countries or regions.

C&C profile: This profile detects and blocks traffic to or from command and control servers that are used by attackers to control malware or botnets. You can configure the threat score thresholds and the actions for different levels of severity. You can also enable Geo IP filtering to block traffic from or to specific countries or regions.

Malware profile: This profile detects and blocks traffic that contains malware or malicious content. You can configure the threat score thresholds and the actions for different levels of severity. You can also enable protocol-specific settings for HTTP and SMTP traffic, such as file type filtering, file size filtering, and file name filtering.

The other two profiles, device profile and SSL proxy profile, are not configurable in a threat prevention policy. A device profile is a feature of Policy Enforcer that defines the device type, the device group, and the device settings for the SRX Series devices that are enrolled with Juniper ATP Cloud. An SSL proxy profile is a feature of SRX Series devices that enables SSL proxy to decrypt and inspect SSL/TLS traffic for threats and policy violations.

References: Juniper Security, Professional (JNCIP-SEC) Reference Materials source and documents: https://www.juniper.net/documentation/en_US/junos-space23.1/policy-enforcer/topics/concept/threat-management-policy-overview.html https://www.juniper.net/documentation/en_US/junos-space23.1/policy-enforcer/topics/task/configuration/junos-space-policy-enforcer-threat-management-policy-configure.html https://www.juniper.net/documentation/en_US/junos/topics/concept/security-policy-enforcer-device-profile-overview.html https://www.juniper.net/documentation/en_US/junos/topics/concept/security-ssl-proxy-overview.html

The SRX Series device in transparent mode uses packet flooding to learn about unknown devices in a network. Packet flooding is a process wherein the device sends out packets to every device it knows about or suspects in the network. When the packets are returned, the device can identify and classify the unknown devices in the network.

The following statements are true regarding tenant systems on SRX Series devices:

Each tenant system runs its own instance of the routing protocol process. Each tenant system is isolated, and it has its own routing table, interfaces, and security policies.

A maximum of 500 tenant systems can be configured on a physical SRX device. This allows for a high degree of flexibility and scalability, as each tenant system can be configured with its own set of features and security policies.

A maximum of 32 tenant systems can be configured on a physical SRX device and All tenant systems share a single routing protocol process are not correct statements

The security feature that achieves the objective of identifying potential threats within SSL-encrypted sessions without requiring SSL proxy to decrypt the session contents is encrypted traffic insights. Encrypted traffic insights (ETI) is a feature of Juniper ATP Cloud that helps you to detect malicious threats that are hidden in encrypted traffic without intercepting and decrypting the traffic. ETI uses machine learning and behavioral analysis to identify anomalies and suspicious patterns in the encrypted traffic metadata, such as the SSL/TLS handshake, the certificate, the cipher suite, and the session duration. ETI can also leverage third-party feeds and threat intelligence from Juniper ATP Cloud to correlate the encrypted traffic with known indicators of compromise (IoCs). ETI can provide insights into the risk level, the threat category, the threat location, and the threat time of the encrypted traffic. ETI can also trigger mitigation actions, such as blocking, quarantining, or alerting, based on the threat severity and the policy configuration. ETI can help you to improve your security posture and visibility without compromising the privacy and performance of the encrypted traffic. References: Juniper Security, Professional (JNCIP-SEC) Reference Materials source and documents: https://www.juniper.net/documentation/en_US/junos/topics/concept/security-atp-cloud-encrypted-traffic-insights-overview.html

The packet is silently discarded because the traceoptions output shows that the packet is dropped with the flag flow_spu_drop, which indicates that the packet is dropped by the SPU without sending any response to the sender. The traceoptions output also shows the reason for the drop as “no session found, start first path. in_tunnel - 0, from_cp_flag - 0” which means that the packet does not match any existing session and is not part of a tunnel or a control plane traffic1.

The packet is part of a new session because the traceoptions output shows that the packet is the first packet of a TCP connection with the flag flow_tcp_syn, which indicates that the packet has the SYN flag set. The traceoptions output also shows that the packet is processed in the first path packet flow with the message “no session found, start first path” which means that the packet is initiating a new session1.

References:

traceoptions (Security Flow) | Junos OS | Juniper Networks

[SRX] How to interpret Flow TraceOptions output for NAT troubleshooting

Juniper ATP Cloud provides zero-day malware protection for non-Juniper firewalls. It's a cloud-based service that analyzes files and network traffic to detect and prevent known and unknown (zero-day) threats. It uses a combination of static and dynamic analysis techniques, as well as machine learning, to detect and block malicious files, even if they are not known to traditional anti-virus software. It also provides real-time visibility and detailed forensics for incident response and remediation.

The two valid modes for the Juniper ATP Appliance are all-in-one and core. The all-in-one mode is a single appliance that performs both the collector and the core functions. The collector function collects traffic from the network and sends it to the core function for analysis and detection. The core function performs the threat detection, mitigation, and analytics. The all-in-one mode is suitable for small to medium-sized networks that do not require high scalability or performance. The core mode is a dedicated appliance that performs only the core function. The core mode is used in conjunction with one or more collector appliances that collect traffic from the network and send it to the core appliance for analysis and detection. The core mode is suitable for large-scale networks that require high scalability and performance. References: Juniper Security, Professional (JNCIP-SEC) Reference Materials source and documents: https://www.juniper.net/documentation/en_US/junos/topics/concept/security-atp-appliance-overview.html