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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unable to connect through telnet in windows 7 [closed]

I'm trying to connect to my computer through telnet. I've turned telnet client and server on. I've opened port 23 on my computer firewall and on my router. But when i test it: C:\>telnet ...
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1answer
142 views

Is server being compromised? I've seen a client telnet session at logon

I've seen open a new window with a client telnet sesion at login this morning at SBS 2011 server. The window displayed some random chars (non alphanumerics) a few seconds and gone. The server is fully ...
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2answers
3k views

Connection refused when doing telnet to windows machine

I am doing telnet to windows host from Linux to list Check_mk_agent data. but its giving me following output. [root@myhost ~]# telnet winhost 6556 Trying xxx.xx.xx.x... telnet: connect to address ...
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1answer
2k views

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 ...
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3answers
1k 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
3k 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 ...
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1answer
998 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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1answer
325 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 ...
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1answer
122 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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2answers
963 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 ...
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1answer
224 views

Change port from ipv6 address to ipv4 address

I have setup a service on my server which has opened a port (ie, 40000) but its foreign address is :::* which is a wildcard ipv6 address (I think) When I run telnet localhost 40000 on the server the ...
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1answer
1k views

Postfix SASL SMTP

I am getting an issue when trying to send out email on 465 secure SMTP with a Postfix + Courier with MySQL virtual users. I am able to connect with IMAP secure and download, and I can also send mail ...
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3answers
1k 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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1answer
249 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
812 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
260 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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1answer
446 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
2k 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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0answers
25 views

Solaris 5.10 telnet connection closed by foreign host

I try to connect to a Solaris 5.10 server using telnet, but I only see: $ telnet xxx.xxx.xxx.xxx Trying xxx.xxx.xxx.xxx... Connected to xxx.xxx.xxx.xxx. Escape character is '^]'. Connection closed by ...
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1answer
91 views

Telnet: Unable to connect to remove host: Connection refused (Postfix - Ubuntu 14.04 VPS)

I have installed postfix following this tutorial but when I try to telnet mail.mydomain.com 110 (995,993,143 or 25) it throws the following error: Telnet: Unable to connect to remove host: Connection ...
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0answers
49 views

Socket Error 10054 - VS2013 Web Deploy Failing

I'm having trouble completing a web deploy from VS2013 as I posted in VS 2013 Web Deploy failure: Warning : Retrying the sync because a socket error (10054) occurred Apparently web deploy uses port ...
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0answers
34 views

Purpose of sysctrl tcp timeout unack field

Could some one let me know the purpose of sysctrl tcp timeout unack? If i modify this value from 300 t0 400, what will be the impact. /proc/sys/net/netfilter/nf_conntrack_tcp_timeout_unacknowledged ...
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0answers
26 views

Error Sending £ symbol through telnet message

I use the following command to send SMS messages through SMS Adapters: telnet localhost ${PORT} <<-EOF helo x MAIL FROM: Test RCPT TO: 447999999999 DATA Test £1234 . ...
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2answers
508 views

Sending Email by SMTP IIS7.5 via php site

After my company decided to change the website we switched from old ASP.NET site to new website created in Drupal(php). The site is running locally on IIS7.5 and we also have virtual SMTP server on ...
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0answers
316 views

Server 2012 R2 Telnet

Let me first get the infrastructure out of the way. We have one 2012 R2 Server acting as the Hyper V host for 2 servers. The two virtual machines is one 2012 R2 Server and one 2003 SBS server that we ...
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0answers
165 views

How to remove “You are about to send your password information to a remote computer…” confirmation info when telnet to a windows server 2008?

When I try to access a windows server 2008 machine by telnet from command line, firstly a paragraph of information comes and need a confirmation: Welcome to Microsoft Telnet Client Escape ...
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0answers
153 views

Cannot connect to Solaris Server when Oracle GoldenGate process uses the port

I'm trying to test the Oracle goldengate to replicate data between two databases on the same server. So I installed two databases and two goldengate homes in the same machine. The goldengate ...
0
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1answer
124 views

TCP RST from telnet/ssh daemons when connecting from openvpn

I have LAN_1 and LAN_2 interconnected with an openvpn tunnel terminated ona pair of SOHO routers running busybox. One of the vpn purpose is to allow clients on both LAN_1 and LAN_2, to administer the ...
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1answer
46 views

Problems in testing telnet using postfix

i am quite new so please be a bit patient XD i am trying to configure a mail server using postfix (which implements a database for aliases, domains and mailboxes) and courrier on ubuntu. I have this ...
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0answers
131 views

Telnet Terminal F3 Key Transmit

I am creating a new install image for deployment, upgrading from a previous deployment of Fedora Core 4 to Linux Mint 15. I have the telnet session to the server working and all keys are operating as ...
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0answers
285 views

Can Telnet be used to test Direct Push is open “long enough”

I am getting the event below in the Eventlog regarding Direct Push for Activesync. If it matters we have a Cisco ASA and a Citrix Netscaler. Event 1040 MSExchange Activesync The average of ...
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1answer
699 views

Telnet to new SMTP server port 25 times out

I just got Postfix 2.9.6 up and running on a Debian 7 Wheezy server and I can send and receive mail to the outside world but I'm unable to login to the SMTP server. I've tried telnet, first by ...
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1answer
536 views

Is it possible to secure the SAP Telnet Administration port (50008)?

Is it possible to secure the SAP Telnet Administration port, which is usually port 50008? I would like a SSH type connection, so that data cannot be intercepted/read and non-authorised connection ...
0
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1answer
907 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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votes
1answer
236 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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votes
1answer
1k 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 ...
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votes
1answer
383 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 ...
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votes
1answer
293 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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votes
2answers
659 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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votes
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!
0
votes
1answer
206 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 ...
0
votes
1answer
480 views

How to display ANSI Escape codes e.g. from tshark telnet trace?

How does one display/visualize a trace of a session with ANSI Escape codes embedded in it? I have a tshark trace of a telnet session to a HP switch. From that, I Follow TCP Stream and get a ...
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votes
1answer
75 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 ...
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votes
6answers
4k 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 ...
-1
votes
1answer
252 views

Why can't I exit an SMTP dialog by entering a dot? [closed]

I've just started to set up an SMTP server on one of my test boxes. Postfix is installed and running, however, when I try to end a message it just does not work. All the documentation I've seen says ...
-1
votes
1answer
1k 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 ...
-1
votes
1answer
1k views

Connect to remote host from windows using SSH/pem [closed]

So I have a .pem and I need to connect to a remote machine using that. I have been told to do: ssh -i key.pem root@remote machine Before that I am supposed to chmod 600/400 on key.pem I am on ...
-1
votes
1answer
41 views

How to determine if google public stun server is alive or usable? [on hold]

I have seen a lot of of WebRTC client libraries using public STUN server like below: "stun.l.google.com:19302", "stun1.l.google.com:19302", "stun2.l.google.com:19302", ...
-1
votes
1answer
86 views

Telnet from Unix to Windows [closed]

I'm trying to telnet from a Unix (specifically, Mac OS X) laptop into a server running Windows Server 2008 R2, but am experiencing some issues. The connection is made successfully, but I can't ...
-1
votes
1answer
281 views

Postfix - No greeting on telnet command

I'm trying to install Postfix with Dovecot and MySQL on CentOS 5. I'm new to this and I'm struggling on this more than 2 weeks. I followed this instruction ...