ccna security module 5 100%

CCNAS Module 5 100%1 Principio del formulario

Which type of intrusion detection triggers an action if excessive activity occurs beyond a specified threshold of normal activity?

pattern-based detection

anomaly-based detection

policy-based detection

honey pot-based detection

2Principio del formulario

An IPS sensor has detected the string confidential across multiple packets in a TCP session. Which type of signature trigger and signature type does this describe?

Trigger: Anomaly-based detectionType: Atomic signatureTrigger: Anomaly-based detectionType: Composite signatureTrigger: Pattern-based detectionType: Atomic signatureTrigger: Pattern-based detectionType: Composite signatureTrigger: Policy-based detectionType: Atomic signatureTrigger: Policy-based detectionType: Composite signature

3 Principio del formulario

Refer to the exhibit. What is the result of issuing the Cisco IOS IPS commands on router R1?A named ACL determines the traffic to be inspected.

A numbered ACL is applied to S0/0/0 in the outbound direction.

All traffic that is denied by the ACL is subject to inspection by the IPS.

All traffic that is permitted by the ACL is subject to inspection by the IPS.


What are two major drawbacks to using HIPS? (Choose two.)HIPS has difficulty constructing an accurate network picture or coordinating the events happening across the entire network.HIPS installations are vulnerable to fragmentation attacks or variable TTL attacks.

http://assessment.netacad.net/virtuoso/delivery/pub-doc/exam.shtml




With HIPS, the network administor must verify support for all the different operating systems used in the network.If the network traffic stream is encrypted, HIPS is unable to access unencrypted forms of the traffic.

With HIPS, the success or failure of an attack cannot be readily determined.


Refer to the exhibit. Which option tab on the SDM IPS screen is used to view the Top Threats table and deploy signatures associated with those threats?

Create IPS

Edit IPS

Security Dashboard

IPS Migration


Which two Cisco IOS commands are required to enable IPS SDEE message logging? (Choose two.)logging on

ip ips notify log

ip http server

ip ips notify sdee

ip sdee events 500

7 Principio del formularioWhich two statements characterize a network-based IPS implementation? (Choose two.)

It makes hosts visible to attackers.

It is unable to examine encrypted traffic.

It monitors to see if an attack was successful.

It provides application-level encryption protection.

It is independent of the operating system on hosts.


Which type of IPS signature detection is used to distract and confuse attackers?pattern-based detection





anomaly-based detection

policy-based detection

honey pot-based detection

9 Principio del formularioA network administrator tunes a signature to detect abnormal activity that might be malicious and likely to be an immediate threat. What is the perceived severity of the signature?

high

medium

low

informational


Which two files could be used to implement Cisco IOS IPS with version 5.x format signatures? (Choose two.)IOS-Sxxx-CLI.bin

IOS-Sxxx-CLI.pkg

IOS-Sxxx-CLI.sdf

realm-cisco.priv.key.txt

realm-cisco.pub.key.txt

11 Principio del formularioWhen editing IPS signatures with SDM, which action drops all future packets from a TCP flow?

Deny Packet Inline

Deny TCP Connection

Deny Attacker Inline

Deny Connection Inline


Why is a network that deploys only IDS particularly vulnerable to an atomic attack?The IDS must track the three-way handshake of established TCP connections.

The IDS must track the three-way handshake of established UDP connections.

The IDS permits malicious single packets into the network.

The IDS requires significant router resources to maintain the event horizon.

The stateful properties of atomic attacks usually require the IDS to have several pieces of data to match an attack signature.

13 Principio del formularioWhat are two IPS configuration best practices that can help improve IPS efficiency in a network? (Choose two.)

Configure all sensors to check the server for new signature packs at the same time to ensure that they are all synchronized.Configure the sensors to simultaneously check the FTP server for new signature packs.






Ensure that signature levels that are supported on the management console are synchronized with the signature packs on the sensors.Update signature packs manually rather than automatically to maintain close control when setting up a large deployment of sensors. Place signature packs on a dedicated FTP server within the management network.


Which Cisco IOS configuration option instructs the IPS to compile a signature category named ios_ips into memory and use it to scan traffic?

R1(config)# ip ips signature-categoryR1(config-ips-category)# category allR1(config-ips-category-action)# retired falseR1(config)# ip ips signature-categoryR1(config-ips-category)# category ios_ips basicR1(config-ips-category-action)# retired falseR1(config)# ip ips signature-categoryR1(config-ips-category)# category allR1(config-ips-category-action)# enabled trueR1(config)# ip ips signature-categoryR1(config-ips-category)# category ios_ips basicR1(config-ips-category-action)# enabled true


Refer to the exhibit. When modifying an IPS signature action, which two check boxes should be selected to



create an ACL that denies all traffic from the IP address that is considered the source of the attack and drops the packet and all future packets from the TCP flow? (Choose two.)

Deny Attacker Inline

Deny Connection Inline

Deny Packet Inline

Produce Alert

Reset TCP Connection


Refer to the exhibit. What is the significance of the number 10 in the signature 6130 10 command?It is the alert severity.

It is the signature number.

It is the signature version.

It is the subsignature ID.

It is the signature fidelity rating.




Refer to the exhibit. A user was installing a Flash Player upgrade when the CSA displayed the dialog box shown. Which default action is taken by CSA if the user does not respond within 4 minutes and 20 seconds?

The action is allowed, and a log entry is recorded.

The action is allowed, and CSA does not prompt the user again.

The action is denied, and a log entry is recorded.

The action is denied, and the FlashPlayerUpdate.exe application is terminated.


Refer to the exhibit. What is the significance of the small red flag waving in the Windows system tray?Cisco Security Agent is installed but inactive.

Network-based IPS is active and has detected a potential security problem.

Cisco Security Agent is active and has detected a potential security problem.

A network-based IPS sensor has pushed an alert to a host running Cisco Security Agent.


Which type of intrusion prevention technology is primarily used by Cisco IPS security appliances?rule-based

profile-based



signature-based

NetFlow anomaly-based

protocol analysis-based

20 Principio del formularioWhich two benefits does the IPS version 5.x signature format provide over the version 4.x signature format? (Choose two.)

addition of signature micro engines

support for IPX and AppleTalk protocols

addition of a signature risk rating

support for comma-delimited data import

support for encrypted signature parameters


ccna security module 5 100%

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