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SSH / Telnet Software

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The collection of articles, videos, and posts on this topic.

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Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. SSH was designed as a replacement for Telnet and for unsecured remote shell protocols. The term telnet is also used to refer to the software that implements the client part of the protocol. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.

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Hi,

Hi, I'm using Copssh 5.0.0.9 version and it's works fine so far. i face an issue like "error: Received disconnect from
x.x.x.x: 14: No supported authentication methods available [preauth]". (Note: This is from Copssh Events log)

When i try to pull from files from server using TortoiseGit.

"Disconnected: No supported authentication methods (serversent: keyboard-interactive)"

Could you please help me, to solve this?

Thanks in advance
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0 Comments
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Hi Experts,

1. In what kind of environment , would we need to manage SSH keys?  
   Is it when we have multiple users sshing into any network device/Servers ?

2. Is there any software , that can be used to centrally deploy  different SSL certificates , and manage them (as in inform the admins about the date of expiry , etc.)


Thanks,
T
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6 Comments
Hello Experts,

We are remediating security vulnerabilities.  I have several Ricoh MP 401SPF printers in our environment.  One of the vulnerabilities found was open TELNET.  I want to enable SSH and disable telnet.  I go into the printer interface and setup SSH as follows:

Ricoh1.png---Paint.png
When I try to SSH into the printer, I get the following error:

Ricoh2.png
When I look at the logs, I'm not seeing much that will help me.  Here are the logs:

Ricoh3.png
I've googled the error and have not come up with much.  I've deleted the key and recreated it.  I've also tried different clients.

Does anyone have any ideas?

Thanks,
Nick
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1 Comment
Is there a simple and easy way to uninstall Drivers attached to Com ports?

My putty keeps crashing. Probably because I've installed several different serial to USB cables on my laptop
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2 Comments
Hi,
How to identify the reason of problem below?
Status:	Connecting to 160.96.17.69...
Response:	fzSftp started, protocol_version=8
Command:	open "pzim_ftpuser1@160.96.17.69" 22
Error:	Connection timed out after 20 seconds of inactivity
Error:	Could not connect to server
Status:	Waiting to retry...
Status:	Connecting to 160.96.17.69...
Response:	fzSftp started, protocol_version=8
Command:	open "pzim_ftpuser1@160.96.17.69" 22
Error:	Connection timed out after 20 seconds of inactivity
Error:	Could not connect to server

Open in new window
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7 Comments
I am running ubuntu 14.04.4 LTS \n \l  on a virutal machine.

Up until about 1 hour ago, I was able to SSH into my linux box just fine internally, in my network.
I did a sudo ufw disable, sudo reboot and then i just enabled back the firewall, sudo ufw enable, did a reboot,
and now I can't SSH into the server.

Any idea's what I have to do to fix the issue and allow the linux box to accept SSH?

I can get into it via the console.
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1 Comment
Here's a useful replacement for SSH. I never really gave much thought to UDP vs TCP for staying connected while roaming on a mobile device. https://mosh.org/
Mosh: the mobile shellMobile shell that supports roaming and intelligent local echo. Like SSH secure shell, but allows mobility and more responsive and robust.
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0 Comments
Hello Experts,

I have number of HP blade enclosures to pull data from.  I've written a Python script to SSH to the enclosures and retrieve the data.   The script works but takes about 3 hours to complete.   Although the bulk of the code in the script parses the data, the bulk of the time involved is in setting the SSH session to each server.   Thus what I'd like to do is establish a means to run the processes in parallel.    I'm hoping someone can give me pointers in the right direction.

What I've Tried

1. My first stab at this with with the Parallel-SSH module (https://pypi.python.org/pypi/parallel-ssh).   That would have been the cleanest solution.   However, although I was able to connect to my enclosures, I was unable to retrieve output from any of my commands.  
2.  My current work around is to use Python's Multiprocessing module and specifically a pool as that seemed to be the simplest solution.   However, that's not working.   From the output the use of pool.imap results in mangled IP addresses.  Consider the following:

('OA IP is: ', u'1')
Now Processing OA 1.
Cannot connect to OA: 1.
[Errno None] Unable to connect to port 22 on 0.0.0.1

Here are some code snippets
def automatic_mode():
    enclosure_results_lst = []
    try:
        enclosures_lst = get_chassis_data() 
        # Function pulls IP addresses from another systm
        # Function return a Python list.  Example below
        # enclosures_lst = ['10.0.0.1', '10.0.0.1',

Open in new window

…
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5 Comments
Hi expert

I had encountered the followng error "showing too many parameters for command synchronize".

i have the attach the script files  for reference example

option batch abort
option confirm off
open sftp://test1:test@200.1.1.1 -hostkey="ssh-rsa 1024 e4:dd:11:2e:82:34:ab:62:59:1c:c8:62:1d:4b:11:11"
synchronize local E:\SIN\Marketing\Daily Reports  /Reports

please note I have attached the errors message for your reference.
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2 Comments
I am setting up spiceworks monitoring on my domain and "one" computer it cannot connect. I already opened the ports on the domain and in the firewall (Symantec) but still cannot connect.
I did a telnat but it shows ports listening that is not required in their documentation.
Is there a network tool that I could use to monitor to see what is blocking the server application to communicate with client
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7 Comments
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We have an account that when someone SSHs in to it won't accept a password. If I login via Putty and su to the account I get asked for the password and when I put it in it's accepted. If I ssh to that account I'm asked for a password and it is rejected.

Hasn't been any real changes to the OS/Server but I'm not an Unix  pro. Where should I start?

Yes, I can delete and recreate it but I'd like to find the underlying issue.
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7 Comments
I am new to ssh and I have no idea what I'm doing. I followed the instructions on public and private key generating, and all that grand stuff, but when I open terminal on my mac, I get this. What am I doing wrong?
Screen-Shot-2017-07-21-at-4.14.32-PM.png
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3 Comments
Hello,
I have powershell code for winscp that uploads files from a local directory using a filter on files in the directory to a remote server.  I need code to determine if files are in use before they are uploaded. If a particular files is in use, I would like the code to skip the upload of that particular file and continue with the upload of the files not in use.  The code needs to accommodate applications that might be using the file that do not support file handles and any process that might have a lock on the file.

Any help would be greatly appreciated.

Thank you
Diammond
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5 Comments
Dear All

           I have a CentOS 7 suddenly can not ssh to it, below is the error, any idea what happen ?

ssh
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8 Comments
Previously Bluecoat proxy allows access to SendThisFile service but sometime in
May, Bluecoat proxy has blocked it as "potential data loss/leakage".

I can see that SendThisFile has options for files transfer via PCs/laptops/emails
though previously when I could access, they have good encryptions etc.  Don't
recall SendThisFile is HIPAA & PCI certified.

What about IPSwitch (refers to link below):
https://www.ipswitch.com/resources/data-sheets/ipswitch-gateway
It's PCI & HIPAA certified but what else sets it apart from SendThisFile that it's
not a potential data loss/leakage source?  Some major insurance companies
want to exchange files with us using IPSwitch.

What I can think off are whether IPSwitch can restrict such that:
a) use only sftp that IPSwitch offers, not ftps (correct me, but I believe ftps is
   less secure than sftp)
b) don't allow transfer via PCs at both sender/recipients ends but this is
    something controlled at recipient/sender's ends right?  Not by IPSwitch
    or unless IPSwitch has an option that restricts connections from servers
    IP addresses of senders & recipients - does it have this option?
c) how is IPSwitch PCI certified?  They mask their customers data or have
    segregation of different customers (ie no co-mingling)?
d) how else can we restrict such that sender/recipient do connect from
     public places & homes of their staff but only from their organizations'
     servers?
e) I suppose we should not allow …
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2 Comments
Hi,

I am using secureCRT version 8.0.4 on windows 10. Whenever I ssh into any of the devices, there is no terminal length set for example when i ssh into cisco router and give a command of Show Run it displays the whole configuration instead giving breaks i.e.--more-- in the middle like in putty.

How can i achieve the same using secureCRT?
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2 Comments
I have many winscp ftp website, login, password
Rather than me looking through email, and sms to figure out what the passwords are,

how can I backup the passwords in a file
and use that same file to restore in a new windows 10 computer
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2 Comments
I found a really nice looking example of how to do telnet over VB.  

It is the last post on this page:

http://stackoverflow.com/questions/9113632/test-telnet-communication-on-remote-computer-using-vb-net

It looks to be exactly what I need, but I don't know how to use it.  

I want to use it to connect to cisco routers and issue commands.  

I've built a form to do it, but, I have a really silly problem.  I don't know how to instantiate the class, set the settings and use it!

I don't do a lot of VB and this bit has stumped me.  

Ideally, if you checkout the code below and assuming it is ok,  tell me how to:
1.  Connect to a telnet device using the hostname from a textbox called txtHostRouter and the port number from a textbox called txtPortNumber
2.  Recieve whatever output (probably a password prompt)  into a text box called txtOutput.  
3.  Send some input from a text box called txtInput for example "show Run"
4.  Recieve the output into a different text box called txtOutput.  

So I can keep doing 3) and 4) until I am finished and then close the connection.  

I am not sure where to start, so even if you just get me started, I bet I can work it out.  

I have pasted the code below

Any help would be appreciated

Thanks in advance

Imports System.Threading
Imports System.IO
Imports System.IO.Pipes

Public Class TelnetClient

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11 Comments
I am configuring OpenSSH on windows, when I sftp a number of files through winscp the following error is logged and the transfer fails.

Fault bucket 120742644444, type 4
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: sshd.exe
P2: 0.0.12.0
P3: 58f3d47d
P4: StackHash_c1e2
P5: 10.0.14393.0
P6: 578997b2
P7: c0000374
P8: PCH_BC_FROM_ntdll+0x00000000000A59A4
P9:
P10:

Attached files:

These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_sshd.exe_22ea82deddc0bc295fdb7f2a9ebb7d12a9daedd_01be728d_1f386bfb

Analysis symbol:
Rechecking for solution: 0
Report Id: df3f0593-ed53-412b-8d6f-bc3fd55c42df
Report Status: 0
Hashed bucket: 7e077c76baf60d7e7a72f62d6b43bfe1

I have tried to disable the Microsoft DEP but I am still stuck with this error.
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2 Comments
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Sys admin has provided me username and password and advised that solaris uses nis (and then I've been given hostnames).

I've downloaded putty but it gives me authentication failure. Nothing special I have to do if its NIS authentication?
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I want to be able to SSH to the outside interface of a remote ASA 5505 so that I can connect to make changes without losing connectivity as the current access is to the inside interface over a VPN connection. I tried  ssh XXX.XXX.XXX.XXX 255.255.255.255 outside but it did not work. This is the public IP of the outside interface. What else do I need?
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15 Comments
Feel free to try connecting yourself, it's just a test server atm.

I have tried both WinSCP and FileZilla and can not make a connection. I was previously able to login, but I am using a free webhosting so I don't get free tech support.

Host Name: files.000webhost.com
Username: php-lessons
Password: temporarytestftp

ftp.png
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17 Comments
I am in the process of setting up SFTP communications with a vendor of ours.  After changing the project parameters from using a web service to SFTP, I have learned that IIS 8 does not support SFTP. Can anyone provide me with an application to use?

Requirements
1) Secure - Kind of a given, but I'm saying it anyways
2) Actively supported
3) Easy to use - I'd prefer not to have to do everything via command line\powershell
4) Known product\Trusted - I'm looking more for a time tested application rather than the newest latest greatest

Other
1) Can be a purchased product  - though I'm aware of several that are free
2) If it has any special features, I will be using the SFTP to mainly receive XML files into a T-SQL database

Thank you!
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3 Comments
Dear Colleagues,
I have HP Aruba2530 switch installed at state hospital.
The problem is that SSH and WEB access is not secured by any password, all the settings are default whatsoever.
Plz help me to add a password authorization to SSH and WEB interface.
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5 Comments
I am writing a script using plink to send commands remotely to network devices (routers and switches) and then output the console to a text file.  Using the below, I can successfully acheive this but with some strange results:

(plink -ssh user@1.2.3.4 -pw password <.\commands.txt)>output.txt 2>&1

The resulting output.txt file actually shows the command output and then all of the login banner mumbo jumo you get when you log into a device normally (***WARNING*** THIS IS A PRIVATE COMPUTER SYSTEM, etc...)
So my format ends up being:

- results
- login banner

I am having trouble getting the format correct to send a pause trough plink so that my output file shows the results as if I was logged in:

- login banner
- results

Any suggestions?  or is this even possible?
0
9 Comments

SSH / Telnet Software

2K

Solutions

6

Content

i
The collection of articles, videos, and posts on this topic.

3K

Contributors

Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. SSH was designed as a replacement for Telnet and for unsecured remote shell protocols. The term telnet is also used to refer to the software that implements the client part of the protocol. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.

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