Telnet is a protocol for bidirectional interactive text-oriented communication with remote hosts via virtual terminals. It is defined in [RFC 854](http://tools.ietf.org/html/rfc854). Telnet provides no inherent security and so is becoming less commonly supported. On modern UNIX-like systems it ...

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script to test mail server

Ever since a windows update that took down my IIS6 mail server a few weeks back, I've been really paranoid about my mail server working. So every time I run a windows update I fire up command prompt ...
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6answers
1k views

SSH into Ubuntu Linux on a box without a static IP address

Basically, how do I do it? I'd like to connect to my home computer from work, but my internet is routed through my apartment building's network, so I don't have the static IP address I'm accustomed ...
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2answers
2k views

Can't telnet localhost smtp

I'm trying to use telnet (debian lenny 5.0.2) to check behavior of a postfix installation, but I can't telnet to smtp. telnet localhost smtp telnet: Unable to connect to remote host: Connection ...
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4answers
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Cyrus IMAP: Unable to connect to remote host: Connection refused

I'm working on setting up a Cyrus 2.2 IMAP server on Ubuntu Server 9.04. If I telnet from the server itself: # telnet localhost imap I get: * OK IMAP Cyrus IMAP4 v2.2.13-Debian-2.2.13-14ubuntu3 ...
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1answer
10k views

Reboot Zyxel router via Telnet

I've got a Zyxel P-661HW-D1, I was wondering if anyone knows how to reboot it via telnet? I can't seem to find the command... Thanks, Kieron
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2answers
8k views

How do I fix “getaddrinfo: localhost Name or service not found” for telnet server?

I need to enable telnet (no i can't use ssh, and I don't want to discuss why I have to use telnet either), I have 127.0.0.1 localhost.localdomain localhost in /etc/hosts. I have installed ...
0
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3answers
227 views

remote telnet and email

This issue has been occupying my work for the last few days and I will be understating when I say its driven me up the blasted walls. Essentially, I can ping and tracert the domain jnrcs.org and the ...
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2answers
5k views

Enabling the telnet client for all Windows 7 PCs on a domain

The telnet client is disabled by default in Windows 7. I would like to enable the telnet client for all Windows 7 PCs in our domain. I know how to enable it manually: Start Control Panel Programs ...
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6answers
2k views

Windows server and telnet, what can you do?

On a Windows Server 2008, can you even telnet into the server? (not remote desktop, but via the command line) If yes, is there much control really? How do people automate if you can't telnet? ...
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1answer
1k views

retrieve gmail using telnet

How do I see the mails in my gmail inbox using telnet? I typed telnet pop.gmail.com 995 at the command prompt and it shows me a blank screen. No message confirming whether it is connected and after a ...
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2answers
484 views

“Connection failed” error when trying to telnet into SQL Server

I have an SQL Server running on a computer, and I'm trying to access it from another computer in the same local network (potentially VPN, since it's located in a datacenter). The point is that I can't ...
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4answers
116 views

smart client for dumb tcp socket?

I have a server that listens to simple tcp sockets. If connecting to it, it prints a prompt and I can type commands, hit enter, see (and save) results, and then have the prompt again. I'm using telnet ...
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2answers
465 views

OS X Server: SMTP Server problem

I have problem to setup my mail server. My system is a OS X 10.6.2. Server. I configured the mail server so far, but I cannot connect to the smtp server correctly. Correctly means that I can connect ...
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votes
2answers
128 views

ssh-ing to a port

Consider the following two commands: create-smtp-message | ssh -p 25 serveraccount create-smtp-message | ssh serveraccount telnet localhost 25 According to my understanding of ssh(1), they ...
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2answers
8k views

Telnet to smtp server port 25 --> Connect failed

I want to send an email via telnet. When I typed to the command prompt telnet 'smtp_servername' 25 the following message appears Could not open connection to the host, on port 25: Connect failed ...
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2answers
2k views

Server won't respond to ping

I have a server that won't respond to pings, but I can remote desktop to it. The server has two LAN connections. Each has the same subnet mask and default gateway, but separate IP addresses. I'm ...
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2answers
524 views

Telnet into Red Hat? [closed]

How do I enable telnet for a Red Hat Linux system?
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4answers
2k views

Send login credentials and commands using shell script via telnet

I'm trying to run a couple remote commands on a box that will not give me a normal shell (it's a device with a proprietary shell). I'm also running the command from a device with a limited set of ...
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5answers
618 views

Why does anyone use ftp?

I am a newbie, so maybe I'm missing something. Why would anyone use ftp or telnet for site administration? If they use them, why would they wonder how they've been hacked? Isn't it obvious that all ...
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2answers
897 views

Telnet without passwords

Back in the days of Redhat 9 I set up networks using dumb terminals that used telnet to log in to the server. And simply by deleting the 'X' in /etc/passwd for the user, the user could log in with a ...
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2answers
1k views

Force telnet mode to character without using telnet commands

I have a remote host C accessible using telnet from host B. From the host A, I use ssh to create a port forward for access to the telnet server of the host C. I use the following command at hostA ...
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1answer
641 views

Is it possible to reset password of Switch CISCO 3500?

With telnet, is it possible to reset password of a CISCO's switch or you have to connect to the console port? Thanks for response..
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1answer
608 views

Per-user login.cmd in Vista?

I would like to know if there is a per-user version of %SystemRoot%\System32\login.cmd available? The default login.cmd file contains comments hinting towards this, but I can't find anything about it ...
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3answers
1k views

telnet port forwarding

Anyone knows if it is possible to setup port forwarding with a telnet client, like it is with SSH?
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1answer
335 views

Pasting extended ACL contents into telnet session to Cisco Router SIM

I have a telnet session to a dynamips router sim. When I try to paste the contents of an actually working ACL retrieved from 'show run' into the access list, only part of gets pasted. The session is ...
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3answers
158 views

Is it normal for port 23 to be connected to periodically?

While working at a customer site (a LAN that includes several Windows machines, plus our server) I noticed that something was periodically attempting to connect to our server on port 23 via TCP. ...
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3answers
2k views

How to connect to other linux machine OS from windows through Telnet command

I wanted to connect to my Linux OS (specifically for Terminal prompt), through my Windows OS. I have Linux configured through a virtual machine, as well as through a separate partition. How can I ...
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3answers
1k views

Override screen size in linux telnet

Here's my predicament. I'm developing a perl telnet script that uses Expect to spawn a new telnet process and feed data (non-interactively) into it. Everything works fine when I call the script from ...
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9answers
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Is packet sniffing for passwords on a fully switched network really a concern?

I administer a number of linux servers that require telnet access for users. Currently the user's credentials are stored locally on each server and the passwords tend to be very weak and there is no ...
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3answers
840 views

how can I edit text files while on telnet service of windows 2003 japanese

I want to edit text files on logging-in windows telnet service with terminal emulator like putty notepad? of course not. I tried vim for win32 console but it is worthless. edlin? oh no. please let me ...
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5answers
17k views

Can the Windows telnet client be scripted?

Is it possible to use the Windows Telnet client to run a series of commands in a script? If not are there any alternatives that can be?
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2answers
1k views

Can I telnet from Linux to Windows when authentication is NTLM only?

I've got a Windows telnet server set up to accept NTLM only (password authentication mechanism is disabled). Is there any way to telnet to this server from Linux, using a "standard" telnet client ...
7
votes
9answers
24k views

Send an email with an attached file using telnet or netcat

I often use telnet or netcat to connect smtp servers to send an email as a test. Does anyone know how you would send an email using telnet or netcat but attach a file as well? There are probably ...
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3answers
3k views

How can I use PAM to restrict telnet login by user?

Regrettably I need to enable telnet for a single user on a Linux machine. Everyone else will have to use ssh. How do I configure PAM to restrict which users may login via the telnet server?
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3answers
472 views

How to specify “terminal-speed” option explicitly in native linux GNU telnet client?

I'd like to be able to set the terminal-speed option explicitly in a native Linux GNU telnet client. Some context to my problem: I'm unable to login to an HPUX host using telnet when the telnet ...
0
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7answers
1k views

What might be causing telnet not to work from the mail server?

We are having and issue with sending some emails to domains outside of our network. We fixed a reverse dns issue and it did not resolve all of the issues. We then realized that we could not connect ...
4
votes
7answers
6k views

How to start a Windows GUI app from telnet

I have a GUI application running on a windows XP client machine. I would like to telnet in, shut it down, pull some files over via ftp and then start it up again. It's that last part that I'm having ...
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2answers
257 views

Good HTTP Monitoring tools

I look for HTTP to work with a Linux system server monitor tool every protocol. I know, and will not there be it in whom or a freeware? When, for example, I dump 80/tcp with a packet monitor to be ...
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votes
3answers
355 views

Is is possible to reattach a telnet connection?

Our network involves a series of dumb text terminals which telnet into a SCO OpenServer 6 server. Occasionally, one of these terminals will crash, forcing the operator to move to a different terminal ...
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3answers
4k views

How to Telnet to Pop3 server?

I have an interview coming up and I want to play around with POP3 and SMTP protocol. I'm trying to login to my gmail's pop3 server account using Microsoft Telnet command line program but it's not ...
5
votes
5answers
475 views

If I use ftp or telnet by accident, to what extent is my password unsafe?

if i use ftp or telnet by accident (usually on the bash shell), to what extend is my password visible? can my coworker see it? can my neighbor see it if i work at home (if not using wireless)? can ...
2
votes
2answers
670 views

Output text file to TCP port

How can I output a text file to a TCP port on Windows Vista using built-in software? For example, type TextFile.csv | telnet localhost 1979 This doesn't work: The process tried to write to a ...