In this post, we are going to learn about the Basic Telnet Commands and How to configure Telnet in Cisco Router with the help of packet tracer. Before that, let’s understand what is Telnet, it’s port number and it’s used.
Telnet is a protocol which is basically used to take a remote connection of a device available in a network using command line interface. The Telnet port number is 23.
Hi All, I have a router in remote site that i can telnet to it but we have forgot the enable passowrd for. Is their an option to recover the enable password remotely without having a direct connection through the console? Appreciate your feedback. Best Regards, Haitham.
Follow this video tutorial because all the basic telnet commands which I am going to explain you right now are used here.
How to configure Telnet in Cisco Packet Tracer
Hack Cisco Router Password Telnet Port Number
Cisco is warning of a new critical zero-day IOS / IOS XE vulnerability that affects more than 300 of its switch models. The company identified this highest level of vulnerability in its product while analyzing 'Vault 7' — a roughly 8,761 documents and files leaked by Wikileaks last week, claiming to detail hacking tools and tactics of the Central Intelligence Agency (CIA). Way is to try to access some of the cisco router's ports, you can do this simply by using telnet, and opening a connection to the router on port 23. If it asks for a password, but no username, you are at the router, but if it. In this post, we have learnt the different ways of setting a password on the Cisco router. Here we learned the security of Auxiliary Port, Console Port, Enable Mode protection in Router and also the security of Telnet on Router. Guys if you have doubt or any query with this post then don’t hesitate to contact me. And if you have any.
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In this example, we are going to take the remote controller of Router 4 from PC 1 with the help of Telnet Protocol. The entire network is configured with OSPF Protocol. Click here to know, how it is configured.
Basic Telnet Commands
Note, here are the uses of Telnet Commands.
- “Router>en” is used to enable privilege mode.
- “Router#conf t” is used to enable configuration mode.
- “Router(config)#line vty ?” used to check, how many VTY connections are available. VTY connections mean, total how many devices can access this router using telnet at a time.
- Here it says, “<0-15> First-Line number” means, total 16 connections are available which start from 0 to 15.
- “Router(config)#line vty 0 15″ is used to enable telnet and here we are enabling all the 16 connections from 0 to 15. For example, if you want to allow a single PC to take a remote connection at a time then run the command line vty 0.
- “Router(config-line)#password ccna” is used to enable telnet password. Here, the password is ccna.
- “Router(config-line)#enable secret cisco” is used to enable privilege password. Here the password is cisco.
Now, Let’s access the Router 4 from PC 1 using Telnet Command.
Hack Cisco Router Password Telnet Port Settings
- “Telnet 3.0.0.2” is used to take the remote connection of Router 4 assigned with the IP Address 3.0.0.2 using telnet.
- “Password: ccna” enter the password you have assigned for the telnet connection. Here the password id ccna.
- “Router>en” is used to enable privilege password.
- “Password: cisco” enter the privilege password. Here the password is cisco.
- Now, you have full access to router 4. you can check the configuration and also you can make changes.
- “Router#show protocol” is used to check the router IP configuration.
Cisco Router Password E900
So, this is how easily you can configure telnet in Cisco Router with the help of basic telnet commands. If you have any doubt, check thetelnet video tutorial.