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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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
16k views

Unable to connect to remote host: Connection timed out when trying to telnet to MySQL?

When trying to connect to mysql server via telnet I am getting following error: telnet localhost 3306 Trying ::1... Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection timed out ...
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2answers
14k views

Why am I unable to telnet to a local port that has a listening service?

I suspect this is either a very simple question, or a very complex one. I have a headless server running ubuntu 10.04 that I can ssh into. I have full root access to the system. I am trying to set up ...
2
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1answer
655 views

Cannot remotely telnet to Port 25

On a rackspace cloud server, I opened up Putty and it WORKS if I do "telnet localhost 25" on the VPS, the postfix process is running as well However, if I try to telnet remotely like "telnet domain....
2
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1answer
18k 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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1answer
180 views

Service Closing transmission on OpenSSL [duplicate]

I am trying to send email through OpenSSL as below : Client > openssl s_client -crlf -connect smtp.mail.yahoo.com:465 SERVER > 220 smtp.mail.yahoo.com ESMTP ready Client > HELO localhost ...
2
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1answer
215 views

Communicating with ARIN Whois server [closed]

Connecting to the ARIN Whois server via telnet works like so: telnet whois.arin.net 43 Once connected, getting information about an IP address is equally trivial: n 119.194.24.35 A lot of ...
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1answer
1k views

Windows 7 system32 different contents depending on how its viewed

Using Windows 7 x64 Enterprise. When I view C:\windows\System32 through explorer I can see telnet.exe, if I open cmd from the start menu I can use telnet. If I open C:\windows\system32\cmd.exe via ...
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1answer
383 views

remote login failed on windows XP, but remote telnet successful on mac

I recently set up an Oracle DB, started the listener on port 1561, and enabled TCP access. I then opened that port to all incoming connections. When I get on my Mac - I can use telnet remoteserver ...
2
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1answer
48 views

Preventing SecAst access from across the network

I have SecAst up and running great, and I realize that any workstation on the network can access the SecAst telnet interface. Is there a way to limit this to only my laptop? I don't want one of the ...
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2answers
8k views

Windows/Linux socat to share a serial device over IP

I have a scenario where I demonstrated to my group @ work how to share a very expensive USB patient simulator plugged into a Raspberry Pi (Debian) using socat. The group wants to be able to have an on-...
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1answer
392 views

Bind telnetd to specific IP on AIX 5.3?

Is it possible to bind telnetd to a specific IP on AIX 5.3? I know telnet is evil. Unfortunately, we have to have it listening on one interface for a specific application, but I want to make sure ...
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1answer
601 views

Connect to Apache times out randomly

We are trying to set up an Apache server on a remote machine, but we experience strange behaviour. Checking with telnet remote.machine 80, one of these things happen randomly: Connect and serve ...
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3answers
2k views

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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votes
1answer
1k views

Can't establish connection on port 80 for yum

Hi guys I have a very strange issue happening on one of my boxes. If someone can advise what I can check please let me know. Thanks. Here's the layout. Box 1 & Box 2 <> Firewall <> ...
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3answers
5k 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 ...
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3answers
7k views

telnet: connect to address ::1: Connection refused

when I run '(sleep 1; echo flush_all; sleep 1; echo quit; ) | telnet localhost 11211' I get Trying ::1... telnet: connect to address ::1: Connection refused Trying 127.0.0.1... Connected to ...
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3answers
4k 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
2k 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
828 views

Can Telnet to port 21 but not 25, 110

I am running postfix and dovecot on my Centos Mail server. Now I can send mail from the server to the outside, BUT I cannot receive mail from the outside. TELNET: When I telnet to my ip address to ...
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2answers
2k views

How to telnet a computer name?

I have a computer in the network with computer name: XP-201112453 Without knowing the IP, how can I telnet to access this computer? I tried: telnet XP-201112453 but terminal gives me "nodename nor ...
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2answers
4k 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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1answer
14k views

Telnet return unrecognized command

Maybe someone could explain how to use Telnet to test Virtual SMTP Server on another machine with Windows 2008? I have tried command below and get unrecognized command error. (The actual server ...
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2answers
887 views

Cannot connect from Linux to SQL Server through a firewall

I need to connect from a Debian GNU/Linux webserver to an SQL Server database which is hosted on a Windows machine within an organization's local network. The person in charge of the database server ...
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2answers
329 views

Good HTTP Monitoring tools [closed]

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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2answers
1k views

Can't connect with telnet from external ip

I have a postfix server running on a kimsufi VPS, i installed roundcube on it, and everything is ok. The problem is, when i try to connect from another server, i have a timeout : telnet whys.fr 25 ...
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1answer
616 views

show users connected to windows telnet server

I can't believe how bad I am at googling windows stuff. How can I list the users connected via telnet to a windows machine? It seems such a basic question, yet I couldn't find a answer. X-( Also, ...
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1answer
368 views

SSH on FreeBSD 8.1 sshd is not running

After reading many pages of documentation and articles on how to telnet or SSH into FreeBSD as root, none have given me a solution that actually works. I am looking for a how-to-remote-into this ...
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3answers
2k views

Connecting to a LDAPS server

I am working on a development machine and I am trying to connect to my LDAP server. This is what I do - telnet ldaps- 686 then the response is - Could not open connection to the host on ...
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3answers
2k views

How to change OpenSSH banner text when testing the port via telnet

I'm deploying a script that runs on various clients behind firewalls that I don't control. The script attempts an SSH client login to a remote server that I do control (the script comes pre-loaded ...
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3answers
3k views

Scripting (piping) commands into a telnet session

i use a cronjob to execute a filetransfer to a host and then telnet into the host and pipe some commands into it. HOST=somehost USER=postgres PASSWD=blabla ftp -n -v $HOST <<END_SCRIPT quote ...
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3answers
161 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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2answers
2k 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 ...
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3answers
10k views

telnet on port 1433 not working

telnet some_ip 1433 On Windows 7 this line doesn't work. It says it cannot establish connection. I'm 100% percent sure that the server has this port open. For a friend of mine this line works. I ...
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1answer
176 views

Linux restrict a telnet and rs323 user to only run a few programs

I have an embeded linux video server that I just finished. One of the features is that I have a telnet server as well as getty bound to an rs232 port which a user can log into to call a few programs ...
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1answer
46 views

How can I determine which users are authenticating via ftp or telnet?

I've inherited a system that has both telnet and ftp enabled. As both these send passwords in cleartext I want to disable them. But many users have never changed their ways to use sftp or ssh. And ...
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2answers
3k 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
131 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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1answer
733 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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1answer
159 views

Can't connect to python server on LAN

So I have this python server which just returns the uppercase sentence which came as a input: from socket import * serverPort = 12000 serverSocket = socket(AF_INET, SOCK_DGRAM) serverSocket.bind(('...
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1answer
2k views

SMTP Server setting on Windows 2008 R2

I am very very new to this and just trying to configure SMTP virtual server. I have followed a few threads to get it all running, but the mails are not being delivered. What I have done so far - 1) ...
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1answer
330 views

Better telnet tool on Windows [closed]

When I need to check whether a firewall rule has been opened or whether a service is up and running, I usually run a telnet test, basically "telnet 192.168.1.50 80" for e.g. If a firewall is dropping ...
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1answer
756 views

How do telnet-based programs report their terminal type to a socket server?

I've written a script called by tcpserver that heavily utilizes tput and similar commands. These commands need to know how to correctly write to the terminal and rely on the TERM variable to obtain ...
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2answers
8k views

postfix: Temporary lookup failure for FQDN

I'm using the FQDN of dur.bounceme.net which I want to resolve(?) to localhost. That is, I want mail to user@dur.bounceme.net to get delivered to user@localhost. I've tried following the Ubuntu ...
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1answer
198 views

telnet server not executing commands

I am connected in a telnet session in linux environment, but when I type commands and press enter, nothing happens. The TCP connection is in established state and when I checked the packets, the ...
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1answer
405 views

Can't telnet from windows machine to OS X laptop on same network?

I'm trying to telnet from my windows box into a service running on a known-available port on a mac laptop, but the connection is getting refused. I can telnet into the service locally. Firewalls are ...
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3answers
1k views

Why does bash invocation differ on AIX when using telnet vs ssh

I am using an AIX 5.3 server with a .bashrc file set up to echo "Executing bashrc." When I log in to the server using ssh and run: bash -c ls I get: Executing bashrc . .. etc.... However, when ...
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2answers
474 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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2answers
19k 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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4answers
6k 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 ...