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

learn more… | top users | synonyms

56
votes
2answers
51k views

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.
19
votes
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
1answer
10k views

Can the Telnet/Netcat client 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 ...
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
votes
4answers
3k 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
3answers
1k 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 ...
7
votes
8answers
437 views

Save me from gibbrerish 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 ...
7
votes
6answers
118k views

How to telnet to an IP address?

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 ...
7
votes
3answers
2k 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?
6
votes
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 ...
6
votes
2answers
9k 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?
5
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 ...
5
votes
1answer
453 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
votes
2answers
10k 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 ...
5
votes
3answers
5k 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
6answers
24k 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
votes
8answers
13k 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
5answers
2k 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
votes
4answers
5k 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 ...
4
votes
5answers
8k 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
votes
3answers
356 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
votes
2answers
13k 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 ...
4
votes
2answers
1k 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 ...
3
votes
2answers
955 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
4answers
3k 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).
3
votes
1answer
12k 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
4k 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
votes
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
1answer
7k 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 ...
3
votes
3answers
10k 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
votes
3answers
1k 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
2k 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
2answers
2k 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
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
5k views

How do I quit telnet in iTerm

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.
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
3k 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
3k 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
4k 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
575 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
700 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
140 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 ...
2
votes
2answers
994 views

telnet - is there a maximum line limit?

I am working on several servers that use HTTP for transport of commands. What I have encountered is that some of the commands I am trying to issue by hand are very long GETs, several lines, and that ...
2
votes
1answer
1k views

Telnet not properly displaying text?

I've recently discovered and started playing nethack. I know I can play it locally, but I'm sitting at different computers all the time so I found nethack.alt.org that let's you telnet into their ...
2
votes
2answers
904 views

Thompson Speed-touch DSL modem/DHCP/DNS

Can anyone tell me where an in depth manual is for the Thompson Speedtouch telnet administration? It would be very helpful if I had one.
2
votes
3answers
196 views

Del/Erase Commands

I'm currently trying to use the del or the erase command in a RSM Telnet to delete Temp files on users computers. But the problem I'm running into with the command is that it is working, but won't ...
2
votes
3answers
571 views

Non-command line Telnet server

I'm looking for a simple way to accept telnet connections without providing a shell interface, kind of like a MUD server. I'm actually looking to serve static content, more like: telnet ...