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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invoking telnet from two different interfaces

I use telnet to test email server connectivity between servers. My server has two interfaces, I'd like to telnet over each. Basically I'd like to choose source (one of my local ip addresses) AND ...
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1answer
276 views

munin-node in openvz-container not reachable from host-system

I have a problem figuring out why my openvz-container is not reachable from the outside (host-system) on port 4949. netstat in the container: [root@openvz ~]# netstat -utapn |grep 4949 tcp 0 ...
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1answer
229 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

Solaris built in command for TCP connection without all the telnet stuff

Sometimes telnet is used for testing non telnet servers such as HTTP or SMTP servers where the TELNET protocol usually stays out of the way. However, I think I have run into a case where it is in the ...
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2answers
11k 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 ...
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2answers
468 views

Executing a command over telnet

Is it possible to run an executable on a remote machine using telnet? I connect to a windows XP machine via telnet and then I execute the exe by issuing this simple command. RunProgramme.exe No ...
2
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1answer
143 views

translate telnet trafic to SSH

I have a closed source windows tool I need to run, which has to connect to a remote machine. Problem is, the tool only has telnet functionality, while the remote host only accepts SSH2. Is there some ...
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3answers
4k 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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1answer
427 views

Routing telnet/23 connection thru double SSH tunnel (SSH proxy server)

I have a contractor is using a Windows PC that is outside the corporate network. However, we allow connections via the firewall to certain hosts/ports. Telnet/23 from the contractor's PC to a ...
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1answer
407 views

Passive ssh/telnet server?

I want to set up a Ubuntu openssh (or telnet) server where the network environment is can connect to any other host via any tcp/udp port. but cannot accept incoming connections from other clients. ...
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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 ...
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2answers
514 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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1answer
509 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 ...
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2answers
4k views

CentOS open port 7000 [RESOLVED]

I have two boxes one ubuntu v10.10 (IP: 192.168.12.128) and another centos v5.5 (IP: 192.168.12.131) I m able to ping centos from ubuntu box and vice versa. When I telnet UBUNTUIP using port 7000 ...
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2answers
591 views

Can I change my sendmail port?

I am having a problem sending mail through sendmail. I have configured sendmail and it is fine. I telnetd the localhost and it connects but when i telnet port 25 is says telnet: Unable to connect to ...
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1answer
978 views

Python script - connect to SSH and run command

What I want to have is an python script to do the following: connect to an [ input by user ] SSH host connect using the credentials [ provided by the user ] run command on the SSH host [ telnet to ...
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3answers
954 views

Configuring an SMTP server in order to activate a Blackberry device on BES without data plan

I have been trying to get Blackberry Entreprise Server 5.0 running on my Windows 2008 VM. It seems to work, I can now add users and find them into Active Directory. The next step for me would be to ...
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2answers
2k views

Exchange server 2003 not sending messages sent to internal addresses via telnet?

For a variety of reasons, I am needing to programmatically send mail through an Exchange 2003 server. I'm not able to use any built-in "SmtpClient" classes so I'm following the SMTP protocol over ...
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1answer
1k views

Telnet command missing on Windows 2008 R2 machine

I have a Windows 2008 R2 machine that is being used for development machine. When I try to use Telnet I get the error: Telnet is not recognised as an internal or external command ... I have ...
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1answer
239 views

Dovecot immediately logs off user

I'm trying to set up email on my server, and have successfully set up POP3 with gmail for my main account. When attempting to set up another user though, gmail reports ` There was a problem ...
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2answers
2k views

Connection closed by foreign host

When I telnet one port of my server, it give me an error: "Connection closed by foreign host", anyone can tell the reason ? thanks!
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1answer
205 views

Telnet disconnected on login failure

I have two servers running Linux 2.6.9 kernel. When i telnet to server1 , the telnet will be disconnected only after 3 login failures. While, when i telnet to server2, telnet will be disconnected ...
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2answers
4k views

How can I access a shared Exchange mailbox with IMAP (over telnet)?

I have an Mailbox which multiple users have access to, it works fine for me and I can add it in Outlook as an additional mailbox to my account and list all its content. I can access my personal ...
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4answers
3k views

how to protect telnet access to smtp port 25?

Please consider the following: 192-168-1-106:~ michael$ telnet <remote_server_ip> 25 Trying <remote_server_ip>... Connected to li*****.linode.com. Escape character is '^]'. 220 ...
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3answers
981 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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2answers
822 views

how to disable telnet services in windows servers

In my windows machine telnet services are set disabled in windows machine. But when you do: telnet localhost 25 still the SMTP listens. how can i set not to listen to the service?
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2answers
739 views

Munin on localhost (telnet only displays period)

I set up munin to run as root for testing, my relevant config is as so: munin.conf: [localhost] address 127.0.0.1 use_node_name yes I tried fqnd.mysite.com (but it couldn't connect), ...
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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
768 views

Different behaviour of netcat from telnet when connecting to public route server

I have observed a different behaviour between netcat and telnet when connecting to the public route server bgp-view.tvnetwork.hu and issuing the command show ip bgp. Using Telnet the output (which is ...
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2answers
11k views

Unable to telnet out on port 25 on windows server 2008

I just setup a Windows 2008 R2 server and am trying to get a basic mail server up and running so that I can send emails from my applications. I setup a virtual SMTP server in IIS6 and tried doing a ...
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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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1answer
9k views

Verify connectivity to a server on a UDP port

I want to know if a HP-UX machine can communicate to a remote machine (which I don't have control over) on a particular port using UDP. I tried telnet, but it doesn't look like it supports UDP. I ...
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1answer
245 views

Cannot telnet my computer

A service is running in my system (redhat linux) which opens the port 9000. When i do # telnet localhost 9000 it says, Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape ...
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2answers
24k views

“-bash: telnet: command not found ” error?

I have the following services running: sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off syslog 0:off 1:off 2:on 3:on 4:on 5:on 6:off tcsd ...
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3answers
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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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1answer
74 views

Cannot connect to email server from a remote pc

When I try to connect to my mailserver from my home pc like this telnet whomakescoffee.com 25 I cannot connect. If I type in the same command on my server there is no problem. I have also tried ...
2
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1answer
451 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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1answer
437 views

Telnet session - can't run commands

I have 2 VMs running CentOS 5.0 and I configured telnet on both of them. I can telnet from one to another... but when I type ls or cd at the prompt I get a message like this -bash: ls: command not ...
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2answers
1k views

Restore passwd for root on a server

      I have a DVR server with linux embeded. It has some telnet functions but i don't have the password for it (the chinese manufacturer refuses to give me the ...
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4answers
2k views

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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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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1answer
13k 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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3answers
228 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
287 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 ...
1
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1answer
352 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 ...
2
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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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4answers
125 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
131 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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9answers
3k views

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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2answers
11k 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 ...