In the previous video, we already learn about the function of telnet or ssh. 2
So the point is, we can use telnet or ssh to remote the cisco devices over a computer network. 3
Now, the question is, what is the differences between telnet and ssh? 4
The differences is in the security level, ssh is more secure than telnet. 5
Because in telnet there is no encryption. 6
This is means, if we remote the cisco devices using telnet, everything that we type in the 7
keyboard can easily seen by other people using packet analyser like wireshark. 8
But ssh is secure, everything that we type in the keyboard will be encrypted by ssh. 9
In this video, we are going to learn how to configure telnet first. 10
We will learn how to configure ssh in the next video. 11
Okay let’s just start. 12
We are going to configure telnet on the router. 13
To configure telnet in the router, first we need to go to virtual terminal, line vty 0 14
and then question mark. 15
Here we can use until 15. 16
Let’s say I use 2. 17
Here 0 until 2 is 3, this is means at the same time there will be 3 people who can login 18
using telnet. 19
Next we need to configure password for telnet, so here password and then the password, 20
let’s say telnet123. 21
Next we can use command login. 22
This command means that if we want to login to the cisco devices using telnet, 23
we will need a password, in this case the password is telnet123. 24
Last, we need to type command transport input telnet. 25
Beside telnet, we can also use transport input all, if we use all like this, so we can remote 26
the router using telnet or ssh. 27
So there is 3 choices, first we can use all, and remember if we use all so we can remote 28
the cisco devices using telnet or ssh. 29
We also can use transport input telnet, this is means that we only can remote the cisco 30
devices using telnet. 31
Last, we also can use transport input ssh. 32
This is means that we only can remote the cisco devices using ssh. 33
In this case I will use telnet first. 34
Okay now we have done configuring telnet in the cisco router. 35
Next let’s try to telnet to the router, but here let’s remove the console cable first. 36
Here let’s say we want to telnet to the router from pc in the vlan 10. 37
To remote the router using telnet, we can use telnet or ssh client. 38
Here we can choose telnet and type the ip address of the router. 39
You are free to use which ip address of the router, remember that the router now have 40
multiple ip address, which is for vlan 10, vlan 20, and vlan 30. 41
And here, we are free to use which ip of the router, as long as the ip address is accessible 42
from the pc. 43
Now let’s try to ping first, close this, and open command prompt. 44
Let’s ping to the vlan 10 first, 192.168.10.1, okay here we can see that the result is success, 45
so we can telnet the router using this ip. 46
Let’s also try ping to vlan 20. 47
192.168.20.1, okay this is also success, so we also can remote 48
the router using this ip. 49
Let’s also try to ping to vlan 30, ping 192.168.30.1, okay this is also success. 50
So we also can remote the router using this ip. 51
Okay let’s back to telnet/ssh client. 52
Here choose telnet, and put the ip address of the router, in this case, 53
let’s say I want to use ip address of the router vlan 20. 54
Then click connect. 55
Okay here we need to input the telnet password, which is telnet123. 56
Okay here we can see that now we have successfully login to the router using telnet. 57
Let’s enable. 58
Okay here we got an error no password set. 59
This is because we don’t configure enable secret yet in the cisco router. 60
Let’s go to the router, and configure the enable secret, so enable secret and then the 61
password, let’s say the password is cisco. 62
Now let’s back to the pc, enable, the password is cisco, and okay here we are success to 63
enter privilege mode. 64
Okay I think enough for this video, so now you are able to configure telnet on the cisco router. 65
Thankyou for watching and see you on the next video.