Cisco CCNA Command Reference: How To Master Cisco CCNA Command Line Security

Price: $8.99
(as of Dec 23,2024 08:00:23 UTC – Details)

ASIN ‏ : ‎ B0C2SY67RG
Publisher ‏ : ‎ Independently published (April 26, 2023)
Language ‏ : ‎ English
Paperback ‏ : ‎ 51 pages
ISBN-13 ‏ : ‎ 979-8392692835
Item Weight ‏ : ‎ 4.6 ounces
Dimensions ‏ : ‎ 6 x 0.13 x 9 inches

Cisco CCNA Command Reference: How To Master Cisco CCNA Command Line Security

Are you looking to enhance your skills in Cisco CCNA Command Line Security? Look no further, as this post will provide you with a comprehensive guide on how to master Cisco CCNA Command Line Security.

1. Access Control Lists (ACLs): One of the fundamental components of Cisco CCNA Command Line Security is the use of Access Control Lists (ACLs). ACLs are used to control traffic flow in and out of a router or switch by filtering packets based on specified criteria. To configure ACLs, use the following command:

   
   Router(config)# access-list [acl_number] [permit|deny] [source] [destination] [protocol]<br />
   ```<br />
   <br />

2. Password Encryption: Another important aspect of Cisco CCNA Command Line Security is password encryption. To encrypt passwords on Cisco devices, use the following command:

   
   Router(config)# service password-encryption<br />
   ```<br />
   <br />

3. Secure Shell (SSH): Secure Shell (SSH) is a protocol that provides secure remote access to Cisco devices. To configure SSH on a Cisco device, use the following commands:

   
   Router(config)# hostname [hostname]<br />
   Router(config)# ip domain-name [domain-name]<br />
   Router(config)# crypto key generate rsa<br />
   Router(config)# ip ssh version 2<br />
   Router(config)# username [username] secret [password]<br />
   Router(config)# line vty 0 4<br />
   Router(config-line)# transport input ssh<br />
   ```<br />
   <br />

4. Enable Secret Password: To set an enable secret password on a Cisco device, use the following command:

   
   Router(config)# enable secret [password]<br />
   ```<br />
   <br />

5. Disable Unused Services: To improve security on a Cisco device, it is essential to disable unused services. Use the following command to disable a specific service:

   
   Router(config)# no [service-name]<br />
   ```<br />
   <br />
   By mastering these Cisco CCNA Command Line Security commands, you will be well-equipped to secure your Cisco devices and networks effectively. Practice these commands in a lab environment to enhance your skills and prepare for the CCNA exam.

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