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JNCIA-SEC and JNCIS-SEC lab 11 of 16

Content security and IDP

Block a site with local web filtering, stop program downloads with content filtering, and drop an attack with an IDP custom signature, with a plain account of what the trial image can and can not do.

Run this lab

It needs Lite: its 3 nodes are set to 4 vCPU and 6,144 MB in total. That fits the free demo too.

In your workspace: Shared, then JNCIA-SEC and JNCIS-SEC SRX security guided labs, then 11 - Content security and IDP

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Level
Intermediate
Time
About 75 minutes
Nodes need
4 vCPU, 6,144 MB
Smallest plan
Lite

The scenario

Hartwell's directors have three worries: staff using gambling sites, someone downloading a program from the web, and a known hole in an old admin script on a supplier's site. You'll use the SRX's content security to deal with the first two, and IDP for the third, as far as this image allows. It's worth being plain about that limit, and Task 1 does so.

DeviceInterfaceAddressZone or gateway
SRXge-0/0/0203.0.113.1/24zone untrust
SRXge-0/0/110.10.10.1/24zone trust
LAN-PCeth010.10.10.10/24gateway 10.10.10.1
OUTeth0203.0.113.10/24gateway 203.0.113.1

Policy WEB-OUT already permits HTTP from trust to untrust. OUT's web server has /news/, /betting/, /tool.exe, /prices.txt and /backdoor.php.

What you’ll practise

  • Build the layers of content security from objects to security policy
  • Use local web filtering and content filtering, and read their statistics
  • Explain what antivirus, antispam, signature packages and application identification need
  • Write a custom IDP attack and policy, and prove that it drops

The tasks

  1. What this image can and can't do
  2. Web filtering
  3. Content filtering
  4. Antivirus and antispam, as far as they go here
  5. IDP with a custom attack
  6. Two objectives this lab can only describe

The Lab Tasks pane has the scenario, these tasks, the checks to run, hints and the full solution.

Topology and devices

The network as it opens in EVE-NG, drawn from the lab’s own canvas, and the image each node runs.

Topology of Content security and IDP3 nodes, 2 links. Every link is listed as text below the diagram.SRXLAN-PCOUTge-0/0/1eth0ge-0/0/0eth0
3 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • SRX ge-0/0/0 to OUT eth0
  • SRX ge-0/0/1 to LAN-PC eth0
Nodes in Content security and IDP, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
SRXJuniper vSRX NextGen templatevsrxng-21.2R3-S3.52 vCPU, 4,096 MB
LAN-PCEVE-NG GUI server (Docker)eve-gui-server:latest1 vCPU, 1,024 MB
OUTEVE-NG GUI server (Docker)eve-gui-server:latest1 vCPU, 1,024 MB

How to open this lab

  1. Sign in to your workspace at lab.cloudlabbox.com.

  2. In File Manager, open Shared, then the folder JNCIA-SEC and JNCIS-SEC SRX security guided labs.

  3. Open 11 - Content security and IDP and start its nodes, then open Lab Tasks for the scenario and the steps.

The lab is read-only. You can start the nodes and configure the devices, but changes to the topology can’t be saved. To change it, rebuild it in your own folder.

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CloudLabBox is independent of Cisco and Juniper Networks. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.