Contents • iii Overview Welcome to the JNCIS-SEC Study Guide—Part 2. The purpose of this guide is to help you prepare for your JN JNCIS-SEC Study Guide Chapter 1: Introduction to Junos Security Platforms This Chapter Discusses: • • • • • Traditional routing and security implementations. the front page of the internet. Become a Redditor. and subscribe to one of thousands of communities. ×. 1. 2. 3. JNCIS-SEC Study Guide (self.
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This option allows you to configure the number of persistent sockets to be opened to the Websense server.
If the configuration does not list the password database in the authentication order and the listed method of external authentication is unreachable, the Junos OS still consults the local password database. Both destination and source NAT can deploy either static or dynamic address mapping.
Once requests reach the threshold, further connection attempts to the destination drop. The key security goal to pursue with remote access is the protection of content and user identity as they traverse the network.
If so, it skips the policy examination.
Antispam Implementation The graphic illustrates the topology we use for the next several graphics. Content Filtering Content filtering provides basic data loss prevention guideatr.
You can also view this output for an individual NAT rule by specifying the rule name instead of using the all option. The URL whitelist specifies traffic that can bypass antivirus scanning. What does this configuration do?
JNCIS-SEC Study Guide Part-1 – types and number of system-defined zones
You can tell which values are incrementing by issuing the command multiple times. Monitoring Traffic Permitted into Interfaces: However, a good practice would be to deactivate traceoptions when not troubleshooting the device to reduce the impact on system resources. This document or any part thereof may not be reproduced or transmitted in any form under penalty of law, without the prior written permission of Juniper Networks Education Services.
The second message results from the spam action configured as tag-subject. The following are vulnerable points in the network: These object lists contain the building blocks of IP addresses, domain names, e-mail addresses, URL websites, and so on, used in the different UTM feature profiles.
OS Probes An attacker might try to probe the targeted host to learn its operating system. Using the topology shown on the graphic, we discuss enabling static NAT for traffic destined to The security zone containing the interface to be used for Web authentication or for the J-Web user interface must allow HTTP traffic as host inbound traffic.
This option allows you configure the host or address, and port of the Websense server. If the protocol traffic matches, it is sent to the antivirus module for virus scanning. Antivirus scanning is a separately licensed subscription service. Bad IP Address Options: The next part of the configuration is the antispam feature-profile. The Junos OS uses the address of the interface on which the initial user request was received.
The purpose of Stusy options in the Junos OS is to offer better jncis-xec protection to the networks behind the Junos security platform, and to the device itself, from malicious information or attacks.
This criterion can be in the form of address sets guidewrt individual addresses. We use bold style to distinguish text that is input versus text that is simply displayed. Internal attacks can range from unauthorized server or resource access to a disgruntled employee destroying or stealing proprietary information.
Unless your network uses a nonstandard or experimental protocol, you should block packets containing an IPv4 protocol field value of or greater. Entering Host Addresses into the Public Zone The graphic presents the configuration that adds host addresses belonging to the Public Zone. The valid range of sessions depends upon the type of Junos security platform.
The next few pages show the Web filtering configuration steps to block access to a bad website. Often these instances will be shown in the context of where you must enter them.
This option enables the creation of a list for blocking file extensions. If a virus is detected, the file is dropped immediately, and the sender of the traffic is notified. Recall that you can configure only two types of zones—functional, which is used for device management only no transit traffic is permittedand security. SRX Series Services Gateways are next-generation systems designed to meet the network and security requirements for the enterprise and service provider infrastructure, and facilitate data center consolidation, rapid managed services deployments, and security services aggregation.
The Attack IPv4 protocol field values of or greater are currently unassigned and should be used only for nonstandard or experimental protocols. The majority of UTM settings are configured within the feature profile. The purpose of this attack is to send ICMP packets, which are typically echo requests, to various hosts, hoping that at least one host replies.
The block-command list indicates the commands that are blocked, and the permit-command list has been designed as an exception list. SurfControl is the default Web filtering type. The scan manager monitors the antivirus sessions and checks the properties of data content against the antivirus settings.