IINS Implementing Cisco IOS Network Security Exam Number: 640-553
Associated Certifications: Cisco
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Exam Name : IINS Implementing Cisco IOS Network Security
Questions and Answers : 133 Q&As Q&As
Update Time: April 13th,2010
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Filed under cisco exam by on May 9th, 2010. 
In today’s article, I’m going to quickly inform you about the Cisco IOS local RADIUS server group configuration mode command named “block count.” Network administrators (like you) use the “block count” command to lock out group members for a length of time after a set number of incorrect passwords are entered.
Below is the command’s syntax:
block count count time {seconds | infinite}
As you can see, the command can use the count and seconds arguments and the “time” and “infinite” keywords.
count-This argument is used to indicate the number of failed passwords before a lockout is triggered; the lockout range is from 1 to 4294967295.
time -This keyword is used to specify the time to block the account.
seconds-This argument is used to indicate the number of seconds that the lockout should (will) last; the range is from 1 to 4294967295.
infinite -This keyword is used to indicate that the lockout should be indefinite (infinite).
Note: If you use the “infinite” keyword, an administrator must manually unblock the locked username.
Below is an example of the command being used:
router#configure terminal
router(config)#radius-server local
router(config-radsrv)#group ittechtips
router(config-radsrv-group)#block count 3 time 120
router(config-radsrv-group)#exit
router(config-radsrv)#user cross password baseball74 group ittechtips
router(config-radsrv)#end
router#copy run start
In the example above, the user named “cross” which belongs to the ittechtip group; will be locked out for 120 seconds if he fails three incorrect password attempts. And, like with mostly all Cisco IOS commands; you can use the word “no” in front of the command to remove (disable) the configured command; like you see below:
router(config-radsrv-group)#no block count 3 time 120
By the way, if you decide to use the command, make sure your router(s) is running Cisco IOS 12.3(11)T or higher.
I hope this article was very informative and helped you quickly understand the usage of the block count command. If you need to learn more; I suggest you visit my website, were you’ll find the latest information regarding the Cisco CCNA (640-553) Security exam techniques.
To your success,
Charles Ross, CCNP #CSCO10444244 is the owner of exambible.com; where you’ll find free comprehensive information and demos on how to pass the CCNA (640-553) security exam.
Sign-Up and learn more about the new “Cisco CCNA (640-553) dumps Course” at his website. http://www.exambible.com
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Filed under cisco exam by on Apr 6th, 2010.
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Course Overview |
Goals & Topics |
| Icons |
| Certification Paths, Learn & Recertification |
| Summary |
Security Threats: Mitigating Network Attacks |
| Goals, Integrity & Availability of Network Security |
| Self-Defending Networks |
| Network Attacks |
| Types of Attacks |
| Access Attacks |
| Worms, Virus & Trojan Horse Attacks |
| Application Layer Attacks |
| Tools |
| Summary |
Securing Cisco Routers |
| Cisco Router SDM – Security Audit Feature |
| One-Step Lockdown Feature in SDM |
| Secure Administrative Access to Cisco Routers |
| Multiple Privilege Levels and Role-Based CLI |
| Securing Cisco IOS Images, Config Files & Implementation |
| Summary |
Implementing AAA |
| Functions and Features of AAA |
| RADIUS |
| TACACS+ |
| Setting Up ACS |
| Configuring AAA Throughout the Entire Network |
| AAA Accounting |
| Summary |
Mitigate Threats Using Access Control Lists |
| Types of ACLs |
| Threat Mitigation Using ACLs |
| Summary |
Switch Security: Mitigate Common Layer2 Attacks |
| Switch Attack Categories |
| Private VLANs |
| VLAN Hopping, Trunk Exploitation & STP Misuse |
| Implementing IP and DHCP Spoof Prevention & ARP Inspection |
| Summary |
Cisco IOS Firewall Features using SDM |
| Firewall Technologies |
| Stateful Firewalls |
| Cisco IOS Firewall |
| Set Up a Firewall on Routers |
| Summary |
Implementing the Cisco IOS IPS Feature Set Using the SDM |
| IDS and IPS Systems |
| Network Based, Host Based IPS & Signature Categories |
| Cisco IOS IPS |
| IPS Policies Wizard & SDM IPS Edit Menu Demonstration |
| Summary |
Implementing Site-To-Site VPNs on Cisco Routers Using SDM |
| Cryptography Methods |
| IKE Protocol |
| Building Blocks of IPSec |
| Advantages of IPSec VPNs |
| Message Authentication and Integrity Check |
| Differences Between Symmetric and Asymmetric Encryption |
| PKI |
| 5 Steps of IPSec |
| VPN |
| Summary |
Course Summary |
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Filed under study guides by on Jan 21st, 2010.
- Questions and Answers
- 133 Q&As Q&As
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Product Description
Exam Number/Code: 640-553
Exam name: Designing for Cisco Internetwork Solutions
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1 Refer to the exhibit. Which statement is correct based on the show login command output shown?
A. When the router goes into quiet mode, any host is permitted to
access the router via Telnet, SSH, and HTTP, since the quiet-mode
access list has not been configured.
B. The login block-for command is configured to block login hosts for 93 seconds.
C. All logins from any sources are blocked for another 193 seconds.
D. Three or more login requests have failed within the last 100 seconds.
Answer: D
2 What is a result of securing the Cisco IOS image using the Cisco IOS image resilience feature?
A. The show version command will not show the Cisco IOS image file location.
B. The Cisco IOS image file will not be visible in the output from the show flash command.
C. When the router boots up, the Cisco IOS image will be loaded from a secured FTP location.
D. The running Cisco IOS image will be encrypted and then automatically backed up to the NVRAM.
E. The running Cisco IOS image will be encrypted and then automatically backed up to a TFTP server.
Answer: B
3 What does level 5 in the following enable secret global configuration mode command indicate?
router#enable secret level 5 password
A. The enable secret password is hashed using MD5.
B. The enable secret password is hashed using SHA.
C. The enable secret password is encrypted using Cisco proprietary level 5 encryption.
D. Set the enable secret command to privilege level 5.
E. The enable secret password is for accessing exec privilege level 5.
Answer: E
4 Refer to the exhibit. What does the option secret 5 in the username
global configuration mode command indicate about the enable secret
password?
A. It is hashed using SHA.
B. It is encrypted using DH group 5.
C. It is hashed using MD5.
D. It is encrypted via the service password-encryption command.
E. It is hashed using a proprietary Cisco hashing algorithm.
F. It is encrypted using a proprietary Cisco encryption algorithm.
Answer: C
5 During role-based CLI configuration, what must be enabled before any user views can be created?
A. multiple privilege levels
B. usernames and passwords
C. aaa new-model command
D. secret password for the root user
E. HTTP and/or HTTPS server
Answer: C
6 What will be disabled as a result of the no service password-recovery command?
A. changes to the config-register setting
B. ROMMON
C. password encryption service
D. aaa new-model global configuration command
E. the xmodem privilege EXEC mode command to recover the Cisco IOS image
Answer: B
7 What are two characteristics of the SDM Security Audit wizard? (Choose two.)
A. displays a screen with Fix-it check boxes to let you choose which
potential security-related configuration changes to implement
B. has two modes of operationinteractive and non-interactive
C. automatically enables Cisco IOS firewall and Cisco IOS IPS to secure the router
D. uses interactive dialogs and prompts to implement role-based CLI
E. requires users to first identify which router interfaces connect to
the inside network and which connect to the outside network
Answer: AE
8 Observe the following statements, which limitation applies to the use of the Cisco WLAN Solution Management over Wireless feature?
A. Read-write access is not available; only read-only access is supported.
B. Controllers must be managed using only secure protocols (that is, SSH and HTTPS), not nonsecure protocols (that is, HTTP and Telnet).
C. Uploads and downloads from the controller are not allowed.
D. Wireless clients can manage other controllers however not the same controller and AP to which the client is associated.
Answer: C
9 Which of these correctly matches the CLI command(s) to the
equivalent SDM wizard that performs similar configuration functions?
A. Cisco Common Classification Policy Language configuration commands and the SDM Site-to-Site VPN wizard
B. auto secure exec command and the SDM One-Step Lockdown wizard
C. setup exec command and the SDM Security Audit wizard
D. class-maps, policy-maps, and service-policy configuration commands and the SDM IPS wizard
E. aaa configuration commands and the SDM Basic Firewall wizard
Answer: B
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Filed under CCNA by on Jan 19th, 2010. Comment.