JN0-232 Exam Dumps : Security, Associate (JNCIA-SEC)

Security policies in Junos OS match traffic based on specific criteria:

Source and destination addresses(Option B).

Application(Option D), which may be defined as services (e.g., tcp/80) or recognized through AppID.

Other options:

MAC addresses(Option A) are not used in policy matching; policies operate at Layer 3/4.

Interface name(Option C) is used in firewall filters, not in security policy definitions.

Correct Criteria:Source address and Applications

The SRX Series devices support third-party antivirus scanning engines such asAvira. To use the Avira antivirus engine, administrators must explicitly enable the engine and ensure that the required components are properly loaded.

Enable in configuration mode:

The Avira antivirus engine must be enabled under UTM configuration mode. This step ensures the SRX device uses the Avira scanning engine for antivirus inspection.

Example:

set security utm feature-profile anti-virus avira-engine enable

Reboot the SRX device:

A system reboot is required after enabling the Avira engine to load the Avira antivirus components into memory.

Without a reboot, the Avira engine will not become active.

Why not the others?

Restarting themgdprocess (Option A) only reloads the management daemon and does not load antivirus engines.

Enabling inoperational mode(Option B) is not supported; the configuration must be applied in configuration mode.

Therefore, the correct actions to use Avira Antivirus are:Enable the Avira engine in configuration mode (Option D) and reboot the SRX device (Option C).

On high-end SRX platforms, control-plane (Routing Engine–destined) traffic transits the loopback (lo0) and is best captured by applying afirewall filter on lo0 with the then sample action, together withtraffic samplingunder forwarding-options to write packets to a file.

sample sends matched control-plane packets to the sampling process, which can record them for analysis.

datapath-debug capture focuses on data-plane/SPC paths and is not the tool for generic control-plane packet capture.

tcpdump from shell is not the supported workflow on SRX; the operational command is monitor traffic, but forhigh-endcontrol-plane capture, the recommended and scalable method islo0 filter + sampling.

Port mirroring mirrors transit data-plane traffic, not RE-destined control-plane packets.