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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Telnet doesn't accept Enter as a newline [closed]

I am just trying some really basic Telnet as part of a HTTP tutorial, but everything I've read assumes that the Enter key works very differently than how it's been working for me so far. So an ...
2
votes
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-...
1
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1answer
152 views

Telnet server on linux redhat - deletes char, shifts on terminal console

When I open telnet client from local or remote console, I get damaged output in console like below example: -welcome screen appears properly (also when I put some text into nss. -1st char of words ( ...
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1answer
2k views

powerconnect 2848 telnet commands [closed]

I would like to find out which IP addresses are on which ports, or when I disconnect a cable to show me which port just dropped? Anyone out there who can shed some light on the telnet commands ...
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2answers
2k views

Cannot telnet to port 25

When I try to telnet to port 25 using this command: telnet aspmx.l.google.com 25 I get this message Trying 173.194.69.26... And nothing more happens. I disabled csf but the problem still ...
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1answer
4k views

Some machines in my network can't access a specific website

Something pretty bizarre is happening here. I'm try to access a website from some machines inside my network and I just can't, while other machines access it normally. The website is online.sefaz.am....
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1answer
1k views

Issue with setting up Telnet Management on Open VPN Server

When I enable telnet on openVPN (windows) using this parameter management localhost 25333, I am not able to access the clients through their virtual IPs anymore. At the same time, when I disable this ...
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votes
6answers
5k views

Telnet on Windows Server 2012 [closed]

Im looking to implement telnet on Server 2012, i know its not secure yada yada, its just a project. Whats the best security practices regarding this including software to use, if not inbuilt. I'm ...
3
votes
1answer
2k views

[Shift]+[F1] not working in putty telnet sessions

Update: I configured putty (Windows 8; x64) to send exactly the same data as an old 16 bit Hyperterminal (Windows XP). I tested it using Wireshark. But still the Software on the Suse Server does not ...
5
votes
3answers
1k views

Running a shell script for certain user who logs in with SSH

First time here and posting just because I can't seem to find the answer to this, or whether is this even possible. The problem I'm having is that I want to create a script that will be run ...
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vote
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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votes
1answer
1k views

Unable to do telnet on websocket server

My websocket server is running on port 9000 on an ec2 instance. It's working perfectly when accessed through a browser. But I am unable to do telnet to it. I did telnet ec2.x.y.z.com 9000 and the ...
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votes
1answer
97 views

Sendmail still displays through telnet even though I'm using Postfix [closed]

I recently installed and configured Postfix, and removed every aspect of Sendmail that I could from my Debian x86 system. telnet localhost 25 ...still returns that I'm using Sendmail. I've ...
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1answer
1k views

“Access is denied”, only when trying to run script over telnet

I have a batch script that restarts a Windows Service with: Net stop <servicename> Net start <servicename> I got around having to manually run it as Admin by creating a shortcut to it ...
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vote
1answer
2k views

Logging into mail server works through telnet but fails though imap(s) (Dovecot+MySQL)

I have followed the ISPMail tutorial on how to set up a Debian mail server. I can log into the dovecot server through telnet like this: [root@{hostname}: /home/{user}]# telnet {hostname}.{TLD} 143 ...
6
votes
5answers
7k views

“No route to host” with ssl but not with telnet

I have a strange problem with connecting to a https site from one of my servers. When I type: telnet puppet 8140 I am presented with a standard telnet console and can talk to the Server as always:...
5
votes
2answers
266 views

What are the reasons for using telnet command?

I SSH into root and noticed the previous user used this command: telnet randomdomain.com 25 From what I gathered it is connecting to another server? But that domain doesn't have anything to do with ...
0
votes
1answer
335 views

Netstat shows Time_Wait in MySQL Master to master replication

During my master to master replication, I got a problem on telnet. After fixing it also my replication on both side doesn't work. Master 2 replicates all the database of Master 1 but Master 1 is ...
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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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votes
3answers
592 views

How does one make a telnet server? [closed]

I'm looking into making a Telnet server so I can remotely enter commands on my computer (Windows 7). How would I go about doing this?
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votes
1answer
647 views

How to enable telnet with port 3306 during Master to master replication on MySQL Server

I am trying to do Master to Master Replication in Windows Server 2008. I am successfully able to replicate all the database of Master 1 to Master 2. But I am unable to replicate the changes made on ...
0
votes
2answers
2k views

I cannot telnet www.google.com 80 on my centos, why?

On my centos I have a problem. I cannot: [root@server]# telnet www.google.com 80 telnet: www.google.com: Name or service not known www.google.com: Unknown server error [root@server]# However I ...
0
votes
1answer
383 views

Monitoring memcached with plink

I need a telnet client that can take commands from a file or stdin so I can do some quick-and-dirty automatic monitoring of memcached. I thought plink would be good for this, but it seems to be doing ...
6
votes
1answer
1k views

How to kill a telnet client with rlwrap since ^] does not work? [closed]

When I use telnet with rlwrap it looks like there is no way to kill the client. Am I missing something here or I really have to kill the process with the kill command?
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votes
2answers
391 views

Confusion over terminology SSH, Shell, Terminal, Command Prompt and Telnet

I don't usually use SSH if I can get away with it, but if I have to I do of course, and I've seemingly done this for years while still managing to remain slightly confused about these different terms ....
1
vote
1answer
778 views

Thunderbird 15.0.1 cannot use Exchange 2003 SMTP

I'm having the strangest time getting a Thunderbird email client to connect to my Exchange 2003 server. I got the incoming IMAP account set up no problem, and I can receive mail. However sending mail ...
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vote
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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votes
1answer
868 views

How To Change Telnet username and password using SNMP

We have a Siemens h1000 dslam. We forgot the username and password but i think we can do all activity with snmp My question is How we can reset telnet username and password using SNMP? Edited-> I ...
0
votes
1answer
132 views

Forward local port to remote host telnet port

I'm trying to forward a local port to a remote telnet host. Something like this. MyHost -----> |2222 Proxy |------> |23 Destination | MyHost: I'm on a Windows PC. Proxy: Is a linux box which I ...
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votes
1answer
162 views

Telnet scripting server [closed]

I know this is old question, but I cant find anything on google. Is there any good software for centrally scripting telnet and ssh? Basically the following components: Telnet/SSH client, GUI, Server &...
0
votes
1answer
2k views

Telnet does not give a response

Some wireless access points are acting a little weird, so I want to reboot them every couple of hours. Luckily there exists a security flaw which lets me login as root through telnet when using port ...
0
votes
2answers
1k views

Connections to host are sporadically successful with mysql_connect() and telnet, but I can always ping the host successfully?

When I try to connect to a host on my LAN with mysql_connect();, the connections succeed some of the time and fail at other times. I can always ping the MySQL server successfully, but when I try to ...
2
votes
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 ...
4
votes
2answers
4k views

Can't connect to SMTP server

I have trouble connecting to an SMTP server from my PC. I use Debian sid. telnet mail.example.com 25 Trying 12.23.34.45... telnet: Unable to connect to remote host: Connection timed out While from ...
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vote
2answers
5k views

“Not all privileges or groups referenced are assigned to the caller.” when connecting to Windows 7 Telnet

I'm trying to configure telnet server in windows 7. When I try make a telnet connection from another machine within the LAN, and I log in with the username and password of a administrator account, I ...
1
vote
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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votes
1answer
187 views

Dovecot problems downloading mails

When I run telnet localhost imap2 both from localhost, using IP from external, mutt -f imaps://lasse@"mydomain"@localhost and using webmail, I can view my messages. But If I run mutt -f imaps://lasse@...
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votes
2answers
9k views

what is the default username / password of telnet?

I have installed Telnet server on my CentOs Server. and set disable = noa in xinted.d folder and reset xinted. so telnet is started. When I telnet to server,it will get login and password but I can'...
4
votes
4answers
11k views

how to check connectivity to server by windows tools?

I need to check if client can connect to server on specific TCP port. Server is listening on it. Tried "telnet server_IP port" but telnet is stuck when I see that it's connected to the server. Seems ...
1
vote
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 ...
1
vote
3answers
2k views

Automate hop by hop telnet to Cisco router

I need to automate telnet to a Cisco router and get a "show version" result. The problem is, I need to first to telnet to A, from there telnet to B and then only be able to telnet to the Cisco router. ...
8
votes
2answers
3k views

How to quit QEMU monitor?

I launched KVM VM with this command: kvm /kvm/hdd/v1/v1-1.raw -m 512 -daemonize -smp 2 -nographic -net nic,model=virtio,macaddr=aa:aa:aa:aa:aa:01 -net tap,ifname=tap0 -monitor telnet:localhost:7001,...
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votes
3answers
901 views

Can't connect to port 25 from all computers [closed]

I installed hMailServer on Windows Server 2003 and somehow I can't connect to SMTP 25 port from all computers. When I run the following command, it connects successfully on some clients, but on others ...
1
vote
0answers
110 views

IIS7.5 non-http port routing

I am trying to use IIS7.5 as a way to route to vnc on different servers or virtual servers. I cant get http to work but not non-http protocols like VNC, telnet, etc. Is there a way to do that? ...
9
votes
6answers
22k views

Windows Server 2008 without telnet client - how to test connecting to remote ports without installing anything new?

I'm looking to see if anyone knows of slick tricks to test connections to remote server ports from Windows server 2008 and variants that don't include the telnet client installed by default. Reason ...
2
votes
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 ...
2
votes
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 ...
21
votes
7answers
11k views

something like telnet, but “listen on”, not “connect to”

With the telnet program one can connect to any TCP port on any host, but is there a way to listen on some port on current host? i.e. 1) on host a: telnet listen 12345 2) on host b: telnet host_a ...
1
vote
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 ...
0
votes
1answer
434 views

Netcat to automate SpeedTouch administration

I figured out how to enable/disable my wireless connection with telnet, but I want to automate it. I read telnet is not suitable for this, and one should use netcat instead. This is what I have: nc ...