the telnet program send a ENTER key twice

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alextlsplus
Posts: 3
Joined: Thu Mar 23, 2023 2:42 am

the telnet program send a ENTER key twice

Post by alextlsplus » Thu Mar 23, 2023 2:57 am

Hi team,

I am using the latest community version of EVE NG. I login into EVE use Native Console mode.

When I connect to a cisco switch device, browser pop up a prompt "This site is trying to open Internet Shortc... Extension DLL." then I choose Open, then I got a telnet program, then I enter IOS command line within telnet program, then I found a weird behavior, no matter what command I type, after I enter the Enter key one time, telnet problem will send Enter key twice in the IOS command line. this is a bug of EVE? I try that on different computer and different browser, I got the same issue.

Please see attached for more detail.

Any advice?

BR
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alextlsplus
Posts: 3
Joined: Thu Mar 23, 2023 2:42 am

Re: the telnet program send a ENTER key twice

Post by alextlsplus » Thu Mar 23, 2023 3:19 am

this behavior makes me can't specify the key size when I try to generate an RSA key with below command:

Code: Select all

SW6(config)#crypto key generate rsa
The name for the keys will be: SW6.abc.com
Choose the size of the key modulus in the range of 360 to 4096 for your
  General Purpose Keys. Choosing a key modulus greater than 512 may take
  a few minutes.

How many bits in the modulus [512]:
% Generating 512 bit RSA keys, keys will be non-exportable...
[OK] (elapsed time was 0 seconds)

SW6(config)#
AS it send Enter key twice, it just pass the step which requires me to enter the key size.

Uldis (UD)
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Location: London
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Re: the telnet program send a ENTER key twice

Post by Uldis (UD) » Thu Mar 23, 2023 7:26 am

I dont know what telnet programm do you use,
recommended is Putty or Secure CRT

alextlsplus
Posts: 3
Joined: Thu Mar 23, 2023 2:42 am

Re: the telnet program send a ENTER key twice

Post by alextlsplus » Thu Mar 23, 2023 7:53 am

this telnet program locates at

Code: Select all

C:\Windows\System32\telnet.exe
It's called by browser directly. I am in a PROD environment, I can't install the EVE-NG-Win-Client-Pack tool. just want to know if there is a way to fixed it.

Uldis (UD)
Posts: 5067
Joined: Wed Mar 15, 2017 4:44 pm
Location: London
Contact:

Re: the telnet program send a ENTER key twice

Post by Uldis (UD) » Thu Mar 23, 2023 8:58 am

windows telnet app is worst in the world!!

Install just Putty, and setup it as native client for telnet
Putty I hope you are allowed install
On firefox is pretty easy to set default telnet app
On Chrome and MS Edge need set it in the Winows default apps by protocol telnet
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