Performing One-Step Lockdown With Security Device Manager

To pass the 640-553 Implementing Cisco IOS Network Security (IINS) exam and become CCNA Security certified, you’ll have to master the ins and outs of the Security Device Manager – SDM. (You also must become a CCNA first – that’s a prerequisite for all three additional CCNA certifications.)

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SDM is a Cisco GUI that can perform tasks from creating VPNs to carrying out a security audit on your router. In today’s CCNA Security tutorial, we’ll take a look at the process of performing a lockdown on a router.

I have no first-hand knowledge of this, but when a prison goes into lockdown, everyone and everything is locked up so there will be no trouble. When you perform a lockdown on a router, you’ll enabling and disabling certain network services – so there will be no trouble!

Performing a lockdown does not guarantee the router is 100% safe, but it’s going to be more secure than it was before. Later in this tutorial, we’ll talk about how a lockdown can actually cause trouble – so do read this tutorial to learn how to use SDM for a lockdown, but do not rush to work tomorrow to run one!

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The first golden rule of SDM: If you need to carry out a task, always start by clicking the Configure button. After doing so, I’ll click on Security Audit.

SDM does give excellent descriptions of the task you’re about to carry out, and the Security Audit section is no exception. We’ll be shown two options on the Security Audit screen, with the first being the Security Audit option itself.

The option below that is to run a one-step lockdown.

So our options at present are to run a security audit, after which we’ll be given the opportunity to implement the audit’s suggestions, and a one-step lockdown, which places our router in lockdown with no input or further permission needed from us.

I’ll choose the one-step lockdown, and here’s the next screen:

As I always say, when a Cisco router or program asks you “Are you sure?”, don’t just click it – think about it!

And when you see a window like this that not only asks you if you’re sure you want to perform this task, but also tells you how to roll the changes back if you don’t like them, you better really consider what you’re about to do!

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Having said that, we’ll pick up the next part of this CCNA Security tutorial by saying “Yes” to the above question and then seeing what happens!

To become CCNA Security certified, you’ve got to first be a CCNA. The new CCNA certifications are going to present huge opportunities to those who are ready to take advantage of those opportunities – so if you’re not CCNA certified at present, you need to get started now!

There’s never been a better time to become a CCNA, and with these additional opportunities, there’s never been a more important time to do so!

Five Minutes From Now, You Can Be Studying For CCNA Exam Success Just As Thousands Of Other CCNA Candidates Around The World Have – With Chris Bryant, CCIE #12933 With You Every Step Of The Way – With The Ultimate CCNA Exam Study Package!

Question: 8
Refer to the exhibit.
You are a network manager for your organization. You are looking at your Syslog server reports. Based on the Syslog message shown, which two statements are true? (Choose two.)

Question: 8
Refer to the exhibit.
You are a network manager for your organization. You are looking at your Syslog server reports. Based on the Syslog message shown, which two statements are true? (Choose two.)
A. Service timestamps have been globally enabled.
B. This is a normal system-generated information message and does not require further investigation.
C. This message is unimportant and can be ignored. D. This message is a level 5 notification message.
Answer: A, D
Question: 9
You suspect an attacker in your network has configured a rogue layer 2 device to intercept traffic
from multiple VLANS, thereby allowing the attacker to capture potentially sensitive data. Which two methods will help to mitigate this type of activity? (Choose two.)
A. Turn off all trunk ports and manually configure each VLAN as required on each port
B. Disable DTP on ports that require trunking
C. Secure the native VLAN, VLAN 1 with encryption
D. Set the native VLAN on the trunk ports to an unused VLAN E. Place unused active ports in an unused VLAN
Answer: B, D
Question: 10
Which three statements about SSL-based VPNs are true? (Choose three.)
A. Asymmetric algorithms are used for authentication and key exchange.
B. SSL VPNs and IPsec VPNs cannot be configured concurrently on the same router.
C. Symmetric algorithms are used for bulk encryption.

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