Questions tagged [telnet]

For questions about Telnet, a protocol for bidirectional interactive text-oriented communication with remote hosts via virtual terminals. It is defined in RFC 854.

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telnet connection refused despite ufw having ports open [closed]

How is this possible? I dont understand Server A ip=111.111.111.111 Server B ip=222.222.222.222 Server A: ufw status 23 ALLOW 222.222.222.222 9160 ...
Tampa's user avatar
  • 336
2 votes
1 answer
5k views

How can I disable sending mail through postfix smtp without auth

I just setup a mail server with postfix 2.6.6 and dovecot. I have the auth related config in main.cf like below: smtpd_tls_cert_file=/etc/httpd/ssl/mail.crt smtpd_tls_key_file=/etc/httpd/ssl/mail....
Young Zhou's user avatar
7 votes
1 answer
52k views

Telnet Results in "Connection closed by foreign host"

I'm not a networking guy, so I apologize if my question is dumb. I have two Ubuntu machines setup on Amazon EC2. I need to "talk" from one to the other via port 9300. On my receiving machine, I ran ...
user312840's user avatar
0 votes
2 answers
3k views

How to start a program through putty, then disconnect but program keeps running on remote Ubuntu machine? [closed]

I will be running some batch process on Amazon EC2 Ubuntu 12 machines. I can log in using putty, run the command. The process will run for a day or two. There is a chance the putty will get ...
Mehdi Anis's user avatar
4 votes
3 answers
2k views

Automation in Windows Instances on Amazon EC2

I am working on a compute service that will require automatic deployment of our software (~30 megs). The software is a WCF service, so I am stuck with windows. I can't use mono because we use lots of ...
Partho's user avatar
  • 135
-3 votes
2 answers
2k views

Knowing when a qemu vm shutdown (initiated via telnet using QMP) is finished

When I start a qemu (Windows Server 2003) virtual machine with -qmp tcp:127.0.0.1:4444,server,nowait I can make it shutdown with the following script #!/bin/bash telnet 127.0.0.1 4444 <<JSON ...
Tobias Leupold's user avatar
2 votes
2 answers
16k views

How to access a windows command line from a linux machine? [closed]

How to access the windows command line from an ubuntu machine. OS in question is Windows 7 and Ubuntu 12.04. Accessing here refers to remote access.
Rohan Majumdar's user avatar
-1 votes
2 answers
23k views

How to limit telnet access to only local network users in Cisco [closed]

I need to make so that my telnet service is only reachable by local users, not by anyone from outside in Cisco Packet tracer. Any suggestions please? https://i.stack.imgur.com/ZAd9L.png
user203330's user avatar
2 votes
1 answer
4k 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 <> ...
user192702's user avatar
4 votes
4 answers
5k views

Telnet connection to an AS400 system via telnetlib (Python)

I use telnetlib - Python - to create a telnet client - port 23 - to communicate with an AS/400 server. communication with the telnet command that is no problem, but with telnetlib I do not get any ...
DARDAR SAAD's user avatar
0 votes
2 answers
2k views

How to connect more than one telnet session to Cisco router ( Port Com10 )?

I am working on connecting more than one telnet session to Cisco Router. I was unsuccessful till now and decided to post it for getting any valuable directions and info. Thanks
Subiah R Nagarajan's user avatar
1 vote
1 answer
767 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 ...
feicipet's user avatar
  • 575
0 votes
0 answers
374 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 ...
DaneAU's user avatar
  • 1
1 vote
1 answer
3k views

Having to restart xinetd service to connect via telnet

In my environment I have a linux server running CentOS 5. I have setup a telnet service on this server in order to connect via telnet. However, after some time I try to connect and I get this error: ...
Jake A's user avatar
  • 454
1 vote
1 answer
422 views

SSH/ Telnet PAM configuration

How do I configure maximum number of login attempts before the session is dropped for SSH/telnet in PAM?
Revathy's user avatar
  • 11
0 votes
1 answer
684 views

Redirect telnet "interactivity" from host 3 to host 1 through host 2 (proxy?)

My network configuration: host 1 [h1] - User machine connected via VPN to the main host (host 2). (Win 7) host 2 [h2] - The gate through other machines of my network. No firewall, no ip rules. (Win ...
Francesco De Lisi's user avatar
0 votes
0 answers
555 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 ...
makerofthings7's user avatar
2 votes
1 answer
621 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 ...
user avatar
1 vote
0 answers
151 views

Passwordless remote access to a restricted shell

For, um, historic reasons, we have a C program for HPUX which accepts telnet connections, and runs a home-grown REPL that restricts the commands available. Rather than port this code to Linux, I'd ...
slim's user avatar
  • 183
0 votes
1 answer
6k 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 ...
Steve's user avatar
  • 71
1 vote
1 answer
3k views

How to set telnet start after every reboot in suse 11sp3 x64

I have an issue on sles 11sp3x64 with telnet, if i reboot the machine telnet service not starting automatically. again i have to do service restart manually. is there any way to start automaticaly ...
user1812956's user avatar
0 votes
2 answers
12k views

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 192.168....
Nir's user avatar
  • 109
1 vote
1 answer
1k 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 ...
DextrousDave's user avatar
0 votes
1 answer
1k 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 ...
Techboy's user avatar
  • 1,582
0 votes
1 answer
222 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 ...
ju4nj3's user avatar
  • 3
-1 votes
1 answer
1k views

HP-UX - Telnet to terminal

I would like to use a run of the mill linux VM to connect to an existing HP-UX server through telnet. When I connect using the simple: telnet xxx.xxx.xxx.xxx I get my login prompt and everything ...
pspahn's user avatar
  • 99
-4 votes
1 answer
900 views

telnet aspmx.l.google.com and it try ipv6 first [closed]

well, I try to send email via google 'aspmx.l.google.com' server, port 25. I can send emial, technically. I just have to wait one minute to wait the sending process complete. Then I try to do telnet ...
Jerry Meng's user avatar
1 vote
2 answers
3k views

Unable to telnet to a Windows 7 client on port 9102 while setting up Bacula

I'm trying to setup Bacula for all my work machines. Most of my machines are Linux (Ubuntu) based and I have successfully managed to setup Bacula on those machines. However, I do have several Windows ...
MRashid's user avatar
  • 121
-2 votes
1 answer
9k views

telnet open can not connect on a specific Centos server

i am using below command in the server but it cant connect to given ip and port, I tried to telnet from another locations and it works fine. Only in my server it cant connect. telnet open 151.XXX....
user2314575's user avatar
25 votes
3 answers
89k views

How to test a connection without telnet? [closed]

I'm trying to test whether machine A can connect to machine B on certain ports. The sysadmins of machine A have seen fit to remove the telnet command. What would be a convenient replacement? Machine A ...
Steve Bennett's user avatar
1 vote
2 answers
1k 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 ...
T. Webster's user avatar
2 votes
1 answer
2k 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 ...
LoCoZeNoz ZUE's user avatar
2 votes
4 answers
9k views

new Catalyst 2950 switch, no console or telnet CLI access

I am connecting a brand-new Catalyst 2950 switch to my LAN. It is on with green lights, and frames successfully go in and out the ports. The switch is on the same LAN has my host PC, and pings are ...
T. Webster's user avatar
0 votes
2 answers
13k 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 xxx....
MangeshBiradar's user avatar
-2 votes
1 answer
3k views

Telnet Port 23 Not Responding' [closed]

I have an assignment that requires remote access into some Cisco routers. According to Netlab, it uses TCP port 23. I'm unable to pass the port test. I'm on Windows 7, I've tried all major browsers....
user1287523's user avatar
0 votes
1 answer
9k 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 ...
East of Nowhere's user avatar
6 votes
2 answers
19k 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-...
wxfield's user avatar
  • 61
1 vote
1 answer
184 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 ( ...
user1535203's user avatar
-1 votes
1 answer
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 ...
sean's user avatar
  • 1
2 votes
2 answers
6k 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 exsists. ...
hpn's user avatar
  • 175
1 vote
1 answer
8k 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....
Andre's user avatar
  • 133
0 votes
1 answer
3k 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 ...
theGeekster's user avatar
0 votes
6 answers
8k 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 ...
user avatar
3 votes
2 answers
7k 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 ...
Myrad's user avatar
  • 39
6 votes
3 answers
3k 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 ...
Badger's user avatar
  • 63
1 vote
4 answers
35k 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 ...
Andrzej Gis's user avatar
-2 votes
1 answer
4k 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 ...
simplfuzz's user avatar
  • 279
-2 votes
1 answer
109 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 ...
Joey Miller's user avatar
0 votes
1 answer
3k 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 ...
Thom Shutt's user avatar
1 vote
1 answer
3k 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 ...
Axel Latvala's user avatar

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