CCNA LAB 50: Permitting Telnet Access to Catalyst IOS Switches

小乔

Lab Objective:
The objective of this lab exercise is for you to learn and understand how to configure a switch to be accessed remotely via Telnet. By default, you can telnet to a switch but cannot log in if no password has been set.

Lab Purpose:
Telnet access configuration is a fundamental skill. More often than not, switches are accessed and configured remotely via Telnet. As a Cisco engineer, as well as in the Cisco CCNA exam, you will be expected to know how to configure a switch to allow an administrator to log in via Telnet.

Certification Level:
This lab is suitable for both CCENT and CCNA certification exam preparation.

Lab Difficulty:
This lab has a difficulty rating of 4/10.

Readiness Assessment:
When you are ready for your certification exam, you should complete this lab in no more than 10 minutes.

Lab Topology:
Please use the following topology to complete this lab exercise:




Task 1:
Configure hostnames on Sw1 and R1 as illustrated in the topology.

Task 2:
Create VLAN10 on Sw1 and assign port FastEthernet0/2 to this VLAN as an access port.

Task 3:
Configure IP address 10.0.0.1/30 on R1’s FastEthernet0/0 interface and IP address 10.0.0.2/30 on Sw1’s VLAN10 interface. Verify that R1 can ping Sw1, and vice versa.


Task 4:
Configure Telnet access to Sw1 using the password CISCO. The password is case-sensitive so take that into consideration in your configuration. Verify your configuration by creating a Telnet session from R1.

Configuration and Verification
Task 1:
For reference information on configuring hostnames, please refer to earlier labs.

Task 2:
For reference information on configuring and verifying VLANs, please refer to earlier labs.

Task 3:
For reference information on configuring IP interfaces and SVIs, please refer to earlier labs.


Task 4:
Sw1#conf t
Enter configuration commands, one per line.  End with CTRL/Z.
Sw1(config)#line vty 0 15
Sw1(config-line)#password CISCO
Sw1(config-line)#login
Sw1(config-line)#end
Sw1#
NOTE: Most people forget the fact that switches typically have 16 VTY lines (numbered 0 to 15), unlike routers, which typically have five VTY lines (numbered 0 to 4). Take care to remember this when configuring switches, as you may leave some lines unsecured if you use line vty 0 on a router. We have already discussed that GNS3 has more VTY lines.

R1#telnet 10.0.0.2
Trying 10.0.0.2 ... Open

User Access Verification

Password:
Sw1#
Sw1#


来源: CCNA LAB39: Configuring and Applying Extended Named ACLs Inbound
来源: CCNA LAB40: Configuring and Applying Extended Numbered ACLs
来源: CCNA LAB41: Restricting Inbound Telnet Access Using Extended ACLs
来源: CCNA LAB42: Debugging Network Traffic Using Extended ACLs
来源: CCNA LAB43: ACL Sequence Numbers
来源: CCNA LAB 44: Logging ACL Matches
来源: CCNA LAB 45: Configuring Static Network Address Translation
来源: CCNA LAB 46: Configuring Dynamic Network Address Translation
来源: CCNA LAB 47: Configuring Interface-based Port Address Translation
来源: CCNA LAB  48: Configuring Pool-based Port Address Translation
来源: CCNA LAB 49: Configuring Passwords on Catalyst Switches

yang11

welinker448