Juniper JN0-636 - Security, Professional (JNCIP-SEC)

The solution to this problem is to enable address persistence. This will ensure that the same external IP address is used for multiple sessions between an internal host and an external host. This will result in only one authentication being required, as the same external IP address will be used for all sessions.

According to the Juniper documentation, a tenant system is a logical system that supports routing, services, and security features. A tenant system can be configured to log binary security events to a remote server using the pi security profile. The pi security profile specifies the tenant name, the server address, the server port, and the protocol for logging binary security events. In the exhibit, the pi security profile is configured with the server address 10.0.0.1, the server port 514, and the protocol UDP. However, the tenant name is missing from the configuration. To complete the configuration, the tenant name must be configured as local for the pi security profile. This is because the local tenant name is used to identify the tenant system that is sending the binary security events to the remote server. Therefore, the correct statement to complete the configuration is D. Configure the tenant as local for the pi security profile. References: [Tenant Systems Overview] 1, [Configuring Binary Security Event Logging for Tenant Systems] 2

1: https://www.juniper.net/documentation/us/en/software/junos/logical-system-security/topics/topic-map/tenant-systems-overview.html  2: https://www.juniper.net/documentation/us/en/software/junos/logical-system-security/topics/task/security-tenant-systems-binary-logging-configuring.html

Juniper ATP Cloud is a cloud-based service that provides advanced threat prevention and detection for SRX Series devices. To enroll an SRX Series device with Juniper ATP Cloud, you need to have a valid license and authorization code, and you need to run a Junos OS op script on the device. The op script performs the following tasks:

Downloads and installs certificate authority (CA) licenses onto your SRX Series device.

Creates local certificates and enrolls them with the cloud server.

Performs basic Juniper ATP Cloud configuration on the SRX Series device.

Establishes a secure connection to the cloud server.

You can run the op script either by copying the CLI command from the Juniper ATP Cloud Web Portal and running it on the device, or by using the enroll command on the device. The op script is the only way to enroll an SRX Series device with Juniper ATP Cloud. You cannot enroll the device manually or by using other methods.

The other statements in the question are incorrect for the following reasons:

If a device is already enrolled in a realm and you enroll it in a new realm, none of the device data or configuration information is propagated to the new realm. This includes history, infected hosts feeds, logging, API tokens, and administrator accounts. You can view and change the realm association of a device from the Realm Management page in the Juniper ATP Cloud Web Portal.

The only way to enroll an SRX Series device is not to interact with the Juniper ATP Cloud Web Portal. You can also use the enroll command on the device, which performs all the necessary enrollment steps without requiring you to access the Web Portal.

When the license expires, the SRX Series device is not disenrolled from Juniper ATP Cloud without a grace period. The device enters a grace period of 30 days, during which it can still send files to the cloud for inspection and receive threat intelligence feeds. After the grace period, the device is disenrolled and stops communicating with the cloud.

References:

How to Enroll Your SRX Series Firewalls in Juniper Advanced Threat Prevention (ATP) Cloud Using Policy Enforcer

Enroll an SRX Series Firewall using Juniper ATP Cloud Web Portal

ATP Cloud | Step 2: Up and Running

Enroll an SRX Series Firewall Using the CLI

The two statements about the configuration shown in the exhibit are correct are:

A. The remote IKE gateway IP address is 203.0.113.100. The exhibit shows that the address option under the gateway statement is set to 203.0.113.100, which specifies the IP address of the primary IKE gateway. The address option is used to configure the IP address or the hostname of the remote peer that has a static IP address1.

D. The remote peer is assigned a dynamic IP address. The exhibit shows that the dynamic option under the gateway statement is configured with various attributes, such as general-ikeid, ike-user-type, and user-at-hostname. The dynamic option is used to configure the identifier for the remote gateway with a dynamic IP address. The dynamic option also enables the SRX Series device to accept multiple connections from remote peers that have the same identifier2.

The other statements are incorrect because:

B. The local peer is not assigned a dynamic IP address, but a static IP address. The exhibit shows that the local-address option under the gateway statement is set to 192.0.2.100, which specifies the IP address of the local IKE gateway. The local-address option is used to configure the IP address of the local peer that has a static IP address1.

C. The local IKE gateway IP address is not 203.0.113.100, but 192.0.2.100, as explained above.

References:

gateway (Security IKE)

dynamic (Security IKE)

The correct action to solve this problem on the SRX device is to refresh the feed in ATP Cloud. This is because the number of IP address entries in the monitoring section of the Juniper ATP Cloud portal does not match the number of entries locally on the SRX Series device. This discrepancy can be caused by a number of factors, such as the SRX device not being properly configured for Adaptive Threat Profiling, or the feed not being properly downloaded from the Juniper ATP Cloud portal. By refreshing the feed in ATP Cloud, the SRX device can synchronize its local feed with the latest feed from the cloud service and ensure that the entries are consistent and accurate. References: Juniper Security, Professional (JNCIP-SEC) Reference Materials source and documents: https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/security-adaptive-threat-profiling-configuring.html

The two types of source NAT translations that are supported in this scenario are translation of IPv4 hosts to IPv6 hosts with or without port address translation, and translation of one IPv6 subnet to another IPv6 subnet without port address translation. These are the types of source NAT translations that are supported by the Junos OS for IPv6 NAT. Translation of IPv4 hosts to IPv6 hosts allows IPv4-only hosts to communicate with IPv6-only hosts by changing the source IPv4 address to a corresponding IPv6 address. Port address translation can be optionally enabled to conserve IPv6 addresses by using different port numbers for different sessions. Translation of one IPv6 subnet to another IPv6 subnet allows IPv6 hosts to use a different IPv6 address range for outbound traffic, such as for security or policy reasons. Port address translation is not supported for this type of translation, as IPv6 addresses are abundant and do not need to be conserved. References: Juniper Security, Professional (JNCIP-SEC) Reference Materials source and documents: https://www.juniper.net/documentation/en_US/junos/topics/concept/security-nat-ipv6-overview.html

The packet is processed as host inbound traffic because the traceoptions output shows that the destination IP address 10.10.10.1 belongs to the SRX device itself, which is configured with the ge-0/0/1.0 interface. The traceoptions output also shows the flag flow_host_inbound, which indicates that the packet is destined to the device.

The packet matches the default security policy because the traceoptions output shows that the policy name is default-deny, which is the implicit system-default security policy that denies all packets. The traceoptions output also shows the flag flow_policy_deny, which indicates that the packet is denied by the policy.

References:

traceoptions (Security NAT) | Junos OS | Juniper Networks

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

Default Security Policies | Junos OS | Juniper Networks