In this article, after creating a small network topology with the Packet Tracer program, we will make a telnet connection to the Router over the local network.
How to Enable Telnet on a Cisco Router
Telnet stands for Telecommunication Network. This is the name of a network protocol used to access and operate a computer remotely.
Access to another computer is done in terminal mode (without any graphical interface). It allows remote troubleshooting so that the technician can solve the problem without being physically close to the equipment in question. Telnet also makes it possible to query data remotely or start a session with the UNIX device (in this case, multiple users can log on simultaneously and work with the same computer).
The only disadvantage of Telnet is security. It sends data over the network without encrypting it, allowing spies to access data such as user names and passwords. Therefore, Secure Shell (SSH) emerged as a kind of encrypted Telnet in the mid-1990s.
With PT software used to prepare for exams, you can set up Telnet on a Router and access the Router from computers in the work environment.
The most significant benefit of enabling Telnet or SSH protocol is that there is no need to make a console connection to the Router. This way, you can easily access and manage the Router over the local network via Telnet.
Follow the steps below to configure Telnet for the Router.
Step 1
After adding a Cisco Router, Switch, and PC to the Packet Tracer workspace, all devices are cabling.
Step 2
Double-click Cisco Router1 to open the CLI prompt, type No to skip the initial configuration, and press Enter.
Step 3
To enable Telnet on the Router, execute the following commands in order.
Router> enable
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface gigabitethernet0/0
Router(config-if)#ip address 192.168.1.1 255.255.255.0
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#username cisco privilege 15 password cisco123
Router(config)#line vty 0 4
Router(config-line)#login local
Router(config-line)#privilege level 15
Router(config-line)#end
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#wr
Building configuration...
[OK]
Router#
Step 4
After configuring the Cisco Router interface, we created a username and password for the Telnet connection. Before connecting to Cisco Router1, configure the TCP/IP configuration of Desktop1 in the workspace as follows.
Step 5
Click on the PC, click the Desktop tab, and then click CMD Command Prompt.
At the CMD prompt, type telnet 192.168.1.1 and press Enter to connect to the device. Enter the username and password you created during the connection setup.
Step 6
Once connected to the Cisco Router, you can now manage your device by accessing it through LAN or WAN. To view the connections to the device, run the show line command.
Step 7
You can review open sessions on the Cisco Router.
Running-Config File
Router#show running-config
Building configuration...
Current configuration : 696 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
ip cef
no ipv6 cef
!
username cisco privilege 15 password 0 cisco123
!
license udi pid CISCO1941/K9 sn FTX15241Q66
!
spanning-tree mode pvst
!
interface GigabitEthernet0/0
ip address 192.168.1.1 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
ip flow-export version 9
!
line con 0
!
line aux 0
!
line vty 0 4
login local
privilege level 15
!
end
Router#
Video
You can watch the video below to connect and manage your Router from your PC via Telnet. Also, subscribe to our YouTube channel to support us!
Conclusion
In this article, we have examined step-by-step how to configure Cisco Telnet. If you want to disable Telnet, you can execute the transport input ssh command in line vty 0 4. Thanks for following us!
TolgaBagci
Hi, I'm Tolga, a computer expert with 20 years of experience. I help fix computer issues with things like hardware, systems, networks, virtualization, servers, and operating systems. Check out my website for helpful info, and feel free to ask me anything. Keep yourself in the loop about the newest technologies!
