Telnet is a client-server protocol used to allow communication between computers in a network.

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95
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How do I exit telnet?

I start telnet by telnet host port. How do I stop it in Windows? Shockingly, Ctrl+C doesn't work.
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4answers
16k views

Can the telnet or netcat clients communicate over SSL?

I would like to test client connections with IMAP over SSL, HTTPS, and other secure text-based Internet protocols over SSL/TLS, the same way I would using telnet or netcat if they were not tunneled ...
19
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1answer
5k views

Who logged into my printers?

This April 1st, Someone logged into the printers and changed the ready screen to "vote for josh" on numerous hp laserjet printers. Know that they must have logged in via telnet. And I found this ...
12
votes
6answers
171k views

How to telnet to an IP address on a specific port?

Can anyone tell me how to telnet to an address using a specific port? I've tried the following: telnet 10.1.1.55 I suppose a route just hasn't been set up between the two hosts? What I am trying ...
10
votes
2answers
2k views

How to stop and detect the fork bomb

#include <stdlib.h> #include <unistd.h> int main() { while(1) fork(); } This is the code for a fork bomb. In our college, we connect via telnet i.e client serving protocol. ...
9
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4answers
4k views

Is there a telnet utility for windows?

Is there a simple telnet command line utility for Windows 7? I am used to the telnet command that is built into UNIX, but I can't seem to find one for Windows that can be used similarly.
9
votes
8answers
652 views

Save me from gibberish terminal

While logged in to a remote ssh session, sometimes I do cat to the wrong file (a binary or a diretory) and the display converts to gibberish. The only way out is to close the terminal and open a new ...
9
votes
3answers
2k views

Isn't localhost simply 127.0.0.1 on Mac OS X 10.7 (Lion)?

I tried telnet localhost on Mac OS X Lion, and this is the output I got. Trying ::1... telnet: connect to address ::1: Connection refused Trying 127.0.0.1... telnet: connect to address ...
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votes
4answers
8k views

Windows equivalent of ssh - how to connect to a remote machine and access command line?

I'm having a difficult time coming up with a solution to extend a framework that was designed for *nix machines over to windows. The framework currently runs from one *nix server and ssh's out to ...
8
votes
2answers
18k views

How to type non-printable ASCII characters in Mac OS X Terminal?

To communicate with a serial-type device over a telnet socket, I need to type the null character (ASCII 0) and all other non-printable ASCII characters. On Windows, you hold ALT and type the ASCII ...
7
votes
2answers
3k views

Why isn't Telnet enabled by default in Windows 7?

When I pinged my mailserver from the command prompt using: telnet mail.mydomain.com 25 I got the error Telnet is not a recognized command. I looked for a workaround and then found that Telnet was ...
7
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3answers
3k views

Can everything be done in Telnet?

Is it true that everything you do on the web such as web browsing and reading email you can do with Telnet?
7
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2answers
13k views

How to generate UDP packet

I want to generate UDP packet to test a program, something equivalent to using telnet to test TCP port (Can telnet generate UDP packet?) How can I do this?
7
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6answers
3k views

Lightweight tool for viewing raw HTTP messages?

I'm investigating differences in behaviour between a couple of Web servers. I need to see raw response data from the servers (i.e. before the response is de-chunked if it has ...
7
votes
3answers
17k views

Telnet won't run from cmd prompt in windows 7

Edit:I am running windows 7, 64 bits. I have Telnet Client installed, and if I go to c:\windows\system32 i do find the file "telnet.exe"; if I click it, telnet runs perfectly. However, if I type ...
6
votes
1answer
157 views

How does one browse a website using Telnet?

When you connect to an open port 80 (HTTP) through Telnet, shouldn't the client display a plaintext version of the site? All I get is a blank screen, and then the client disconnects. I know you can ...
6
votes
1answer
8k views

Can I abort telnet while it is still trying to connect?

At times I find myself telnetting from Windows XP to another server and that I state a wrong port number such as c:\> telnet xxxxx.yy pp After hitting Enter, I realize that I entered the wrong ...
5
votes
5answers
4k views

where is the '^]' character on an azerty keyboard?

I am currently using telnet and i need to do an escape character (SMTP), where is this character on an azerty keyboard? (linux ubuntu).
5
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1answer
560 views

Does there exist a telnet-like for SSL connections?

are there any telnet-like tool that can manually debug a https connection byte by byte?
5
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3answers
7k views

How to run scripts within a telnet session?

I want to connect to a remote host using telnet there is no username/password verification just telnet remotehost then I need to input some commands for initialization and then I need to repeat ...
4
votes
2answers
9k views

How do I quit telnet without using standard Ctrl+] combination?

The title says it all. Note that I'm using a non-US layout, Norwegian, so I can't create the Ctrl+] combination. I've found the trick before, but can't find it.
4
votes
7answers
15k views

connect two computers together via a rs232 serial port

Wondering if anyone knows of a solution to connect with telnet/ssh through a rs232 serial port Edit: I am looking for a way to connect to computers together via a serial port. I want to be able to ...
4
votes
6answers
29k views

Is it possible to shutdown a remote computer running Windows 7 via Telnet?

I've successfully connected to my Windows 7 desktop over wifi via Telnet from an XP Home netbook. To login, I use the following command: telnet -l "win7desktop\win7user" win7desktop win7user in ...
4
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2answers
6k views

Feeding contents of a text file as command to telnet

With the command telnet docs.python.org 80 I can do a manual request to http://docs.python.org/2/license.html, by typing the actual request. Now instead of typing it in live I'd like to feed the ...
4
votes
5answers
9k views

How do I copy data from a Ubuntu server using terminal by telnet?

I have one folder to copy that consists of PHP and similar files for creating a web site. How do I copy one folder from the server (Linux Ubuntu) to the client PC (Linux Ubuntu) using terminal? Could ...
4
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3answers
408 views

/usr/bin/reset disables backspace

Following this question, running /usr/bin/reset destroys my backspace functionality. What can I do? After pressing backspace I get ^?
4
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5answers
3k views

Is there a way to download through telnet

I am transfering colleges and I have a lot of files from the first college that I would like to keep. The files are are on a Sun server which I can only access using telnet. Is there a way to download ...
4
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2answers
2k views

Using telnet under windows to test HTTP

I'm learning http, and trying to use telnet to send my own http requests. In the command prompt, I entered: telnet google.com 80 Result: The screen is cleared and I see a blinking cursor. 1. Why ...
4
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2answers
3k views

PuTTY closes when opening SMTP over Telnet on certain server

I have PuTTY installed on Vista. When I set it to Telnet and put in a host name of SMTP2Go.com and port of 25 the window opens for a second not showing any text then closes. I also tried ports 2525, ...
3
votes
2answers
1k views

How to manually do a TCP handshake

Telnet can be used to manually do things that programs do automatically. When I connect to a server I noticed that it automatically does the 3-way handshake to establish a TCP connection. Can it be ...
3
votes
1answer
14k views

Enable remote management on the Zyxel NBG-460N through the telnet utility

I was going through the remote management settings on my Zyxel NBG-460N router, making sure they were not available through the WAN port, when I stupidly without thinking disabled the WWW remote ...
3
votes
3answers
5k views

Automating telnet login and commands on a Mac

Currently I do something like this: telnet 192.168.0.3 23 username password cd /dir/ programname -s -g dosomething I want to do this with one step, the coolest would be to compile a program for ...
3
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1answer
1k views

Telnet GET Request vs HEAD Request: why HEAD failed?

I thought head syntax was just like GET syntax but when I tried with telnet o mirror.bytemark.co.uk 80 GET /ubuntu-releases/lucid/ubuntu-10.04-desktop-i386.iso it works as expect whereas o ...
3
votes
3answers
13k views

How do you resolve the error “Access Denied: Specified user is not a member of TelnetClients groups.”?

I have two computers one running windows xp(professional) and other is windows 7(Home premium).I want to connect from xp to windows 7, but I am getting error like this Access Denied: Specified user ...
3
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3answers
4k views

Telnet won't work on Windows 8.1

I'm using Windows 8.1 64bit. I know how enable Telnet-Client on Windows 8.1. But when I type in : telnet microsoft.com 80 nothing happens! Any ideas would be appreciated.
3
votes
1answer
5k views

Telnet 555 5.5.2 Syntax error. b42si7464989qgd.93 - gsmtp

I'm trying to do email spoofing in cmd in telnet but failed to do so. I entered C:\Documents and Settings\Owner>telnet alt3.gmail-smtp-in.l.google.com 25 Then it brought me here 220 ...
3
votes
3answers
4k views

Cannot connect to telnet server

So, I can't use telnet to connect to any server but it works fine from a different computer. It just says it can't connect. I tried the following things: Disable firewall and AV protection. ...
2
votes
3answers
1k views

Why can't I telnet to a Windows machine?

Why am I not able to telnet to a Windows server machine? Is it because the telnet server is not running there? A remote desktop connection works though. Does a telnet server run by default on a Unix ...
2
votes
2answers
9k views

'telnet' is not recognized as an internal or external command,operable program or batch file

I'm working on an InfoSec exercise, specifically sending emails in cmd that makes use of telnet. Unfortunately, I can't start it. I'm receiving the "'telnet' is not recognized as an internal or ...
2
votes
3answers
7k views

How to telnet into facebook chat

I was able to use facebook chat with an external application using the following information: First, find your Facebook username by going to http://www.facebook.com/your_user/. Next, Open ...
2
votes
2answers
9k views

Closing telnet connection gracefully from session mode itself without going to telnet prompt

a normal telnet connection is like this: telnet localhost 22 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. SSH-2.0-OpenSSH_4.2 ^] telnet> close Connection closed. I want to ...
2
votes
1answer
50 views

Telnet: How do I un-escape?

I know that when connected via Telnet, I can hit Ctrl+] to escape. This brings me to the telnet command line interface. How do I get back to my telnet session? I occasionally hit Ctrl+] by accident ...
2
votes
2answers
5k views

How does telnet get through the windows firewall?

I activated the Telnet client in Windows 7 and was instantly able to connect to servers although Windows Firewall is activated. How does that work? Shouldn't the firewall block outgoing connections ...
2
votes
3answers
3k views

Does telnet client represent a security threat on Windows?

Yesterday I needed a telnet client to connect to my ADSL router and none of the three Windows Seven computers at my home had it(Win Home Premium 32 PC, Win Professional 64 notebook and Win Ultimate 32 ...
2
votes
1answer
1k views

How to telnet to find all computer name in a network?

There are multiple computers connected in a network. How can I find out these computer name and IP address? When I was using Windows, I used to have MacAfee Security and it maps out all the ...
2
votes
1answer
4k views

Connecting to POP/SMTP Server via Telnet

I am trying to connect to connect to an SMTP/POP server via telnet (port 25 and 110). However, I am not able to authenticate myself. Whenever I try to, it says (pop) -ERR SPA Required, use AUTH or ...
2
votes
2answers
5k views

Is enabling telnet a security concern?

Why is it that Vista comes with telnet disabled? If i enable it, is it a potential risk? Also, in the list there is "telnet client" and "telnet server". I'm wondering what's the difference between ...
2
votes
2answers
695 views

Connection Issues with SQL Server Express

I have windows 7 Ultimate, 64bit. I have installed SQL Server 2008 Express and have created a database in it. I have a jar that helps me create a connection file to connect to this database. I have ...
2
votes
3answers
803 views

Telnet/ssh into a windows machine inside putty that is sshed to a linux machine

I am on a Windows machine. I SSH into a Linux machine using Putty. This works fine. However, I have a bunch of make commands I have to execute and move files around. So, I am trying to automate it. ...
2
votes
1answer
150 views

How to telnet login to email server as administrator?

There is a administrator interface for our webmail, where we supply our administrator name and password. In there we can see user information and system log etc., but it only shows very limited ...