Questions tagged [telnet]
Telnet is a client-server protocol used to allow communication between computers in a network.
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Cannot open 8080 port on EC2
I use AWS Ubuntu Instance and try to open port 8080. This is my "Security Groups" settings:
ec2 image
I have added port 8080 to iptables:
sudo iptables -L
Chain INPUT (policy ACCEPT)
target ...
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Domain for telnet service
I have a domain, I have working telnet service:
telnet x.x.x.x 5555
I want to connect it to my domain, i.e.
telnet example.com 5555
How can I do this?
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Why does telnet send CRLF when I press enter?
On the telnet provided with my system (Debian), line feeds (\n) seem to be translated to CRLF (\r\n). Specifically, if I run, e.g., netcat -l -p 3334 > file and run echo a | telnet localhost 3334 ...
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TCP RST when connecting via telnet to the application - Windows
I have an application running on Windows.
The application listens on port 54000.
I can connect to the application from the local machine and it works fine:
telnet 127.0.0.1 54000
Now, I am trying to ...
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Cannot connect to MS SQL RDS instance
I can´t Connect to my RDS MSSQL instance.
The 'Public accessibility' is set to Yes
the subnet goups are using 2 VPC subnets
subnet A: CIDR 10.70.2.0/28
subnet B: CIDR 10.70.2.16/28
Both subnets has ...
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How to forward my service from localhost to the internet?
I have made my personal tcp service that works on port 44444 through telnet as a communication protocol. The service itself is just a simple guess game written in C. I am working on Fedora Linux and ...
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Bypass Linux password login with netcat or ssh or telnet
How can you bypass a password login with nc or ssh? I type 'nc IP-address 13880' and it gives me the login form I need to bypass. Can anyone give me any tips?
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Cannot Telnet to a device
I have this Biometric Device and I can ping the device but I can’t telnet to the port that the device does.
Here’s I can’t telnet my device. I already turned off the firewall and AntiVirus app with ...
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Telnet connection failing via port 23 (port is open on the server)
I have a Windows Domain controller and a Windows 10 Work Station set up from my VirtualBox.
I am trying to connect to the Work Station on my domain via telnet on my Windows domain controller. It ...
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How to pass commands to a telnet window with a batch script?
I'm trying to control a wifi device with a batch script using the telnet command in Windows 7, but I don't know how to pass the commands to the telnet window. This will be a part of a longer script ...
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How does Telnet know where a host is when routing over the internet?
I am fairly new to studying networking, and this is something I have been wondering even though it may be a basic question. I've spoken with people in the networking world and they talk about having ...
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How to install Telnet from a PowerShell Core prompt
To install Telnet in PowerShell you can run:
Install-WindowsFeature -name Telnet-Client
This unfortunately does not seem to work in PowerShell Core where it produces the following error:
Install-...
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Is this server IP + PORT reachable from my server? (using Telnet)
I am not so into networking and I have the following doubt.
I have to test if a specific port on a server it can be reached from another server (or if there is something that is blocking the request ...
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Why Does Telnet Succeed If No Route Back To Host That Initiates It
Machine A could not make a https connection to Machine B. I first used telnet to confirm a tcp connection could be made:
telnet MachineB 443
This worked. So, I concluded that the network between ...
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PuTTY sending extra characters at the beginning of TELNET connection initialisation
When a TELNET session is initialised using PuTTY, I see that PuTTY is sending the following characters to the server at the beginning of the connection:
..... .....'.........
I was able to capture ...
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Unable to connect to MySQL VM from host machine
I have an Ubuntu 18.04 Desktop 64 bit host machine.
On this host machine, I have used VirtualBox to create an Ubuntu 18.04 Server 64 bit VM, and have installed MySQL on it, created a MySQL user, a ...
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Why is my use of telnet towards a web server providing inconsistent results to others with the same approach?
I'm trying to use port 80 to connect to a website(www.ucf.edu), and send a GET request, but I'm getting inconsistent results to other students using the same exact methods. We had to use SSH to ...
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Is it possible to set Telnet communication as higher priority than, e.g. file uploads?
My understanding of the internet is limited. However, I enjoy playing MUDs which are text games that communicate through telnet. I observe that every time an upload is made through our connection - ...
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How to open telnet/ssh to Dlink DSL-225 router?
have D-link DSL 225 router that locate at 192.168.1.1 , with nmap I get
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
23/tcp open telnet
80/tcp open http
631/tcp open ipp
when I ...
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How to run multiple networked applications concurrently on DOS?
For science, I am working on a Vagrant box for DOS. The virtual machine needs to support a remote command execution service, such as sshd or telnetd, so that administrators can run COMMAND.COM scripts ...
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What are my best option(s) if desiring to tunnel/reverse-proxy to-and-from a telnet server?
I have a quite small VPS abroad, and a BBS telnet server software that i wish to run locally.
What are my options, If i wish to only use the VPS as a relay for connections, effectively and ...
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Cannot flash or connect to my Nucleo board (STM32F446) anymore
for some reason I cannot flash my Nucleo (STM32F446) board anymore. It used to work well... I got the following message:
openocd -f ./cfg/openocd.cfg -c "program ./build/ch.elf verify reset" -c "...
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Can't connect to certain port - How to unblock port
I am running a Apache2 Webserver with PHP 7 and xdebug. I try to establish a connection between my IDE (Netbeans) and xdebug running on my webserver.
I read here that I have to check if I can connect ...
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How to enable Alt Gr or Alt keys on a Telnet Server
I'm running a telnet server KpyM on a Windows Server 2008. My telnet client is a Putty on my Windows 10 computer.
I'm running a 16-bit DOS Application through telnet.
I need to use the "\" on an ...
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What is the difference between telnet and netcat?
I am looking for an explanation where I can find the difference between telnet and netcat. In which cases should I use telnet and netcat? What a telnet can do that netcat can not do and vice versa?
I ...
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Cancel Server Manager feature installation
I tried to install Telnet Client feature using Server Manager in a Windows Server 2016 and now is completely stuck at running stage. Now I just want to cancel this but there is no option anywhere. ...
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MathWorks is written for Lego firmware V1.03, but Lego is up to V1.10
MathWorks (MATLAB and Simulink) is/are written for Lego firmware 1.03! (with no TelNet ID/passkey) Versions 1.07 and 1.08 also do not require the ID/passkey. Versions 1.09 and 1.10 do require an ID/...
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Telnet validate email, 550 MI:SPF error
When I try validating an email through telnet, using:
Telnet MX.server.for.email.i.want.to.validate.com 25
HELO Buddy
MAIL FROM: example email address
I get a 550 MI:SPF error, telling me that ...
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Simple TCP client with control over SYN, ACK, FIN
I am troubleshooting a problem with a telnet server on an embedded device and I need to recreate a specific process where a client closes the socket before the server has completed the initial ...
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Why only part of ports on my machine can be reached from external ip?
I'm trying to achieve my remote service with port 5601. But unfortunately i can't open the website.
Here is something i tried to find out why it's not working:
I logged in remote server and tried "...
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Batch suppress "Connection to host lost"
I am using the BOFH server to get random excuses, however whenever it runs it states "Connection to Host Lost" after it has run, since the server immediately disconnects (expected behavior). How can I ...
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Kill all the previous sessions in PuTTY
I've opened a telnet connection to another server, however when I close PuTTY it still looks like I am logged in to another terminal. I think this happens every time PuTTY gets idle. Does someone know ...
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Is it possible to contract a computer virus via telnet?
In the past there were many applications and also games where you could connect to via telnet.
Back then viruses were not THAT far spread and used as they are now. What I'm wondering about is: ...
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How to telnet into a transparent bridged modem through router
So first off I guess what I want to do is be able to telnet into a transparent bridged modem to restart it. (The modem is a Actiontec c1100t) My router is a Linksys wrt1200AC running LEDE openwrt. If ...
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Linux: Telnet / SSH
we've got an old ERP system running on RedHat 5. Now we need to force users to use SSH instead of TELNET, but we can't turn off TELNET now. Is there some command to display, who is connected via ...
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Can ping but cannot telnet to a local network computer
This question follows How to create a network over usb? .
I can ssh to a controller device. When I'm on it, I want to telnet to a running server on my computer. My computer and the device are ...
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can not type anything in blank screen when using telnet in cmd
i have a problem with telnet in cmd.
i write this command in cmd:
telnet cis.poly.edu 80
then i hit enter twice.
at this time a blank screen appears but i can not type anything in this window.
if i ...
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Trouble connecting to Ubuntu server using ssh
I been having trouble connecting to my Ubuntu 18.10 server using ssh. Whenever I try to connect with my college network this is the output
ssh -vvv [email protected]
OpenSSH_7.9p1, OpenSSL 1.1....
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VLC with telnet interface does not show GUI, consumes CPU
I want to control the VLC player via telnet. What I want is to be able to set media, play it and pause it.
I found this command:
vlc.exe -I telnet --telnet-password test
It does work, I can connect ...
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telnet connection failed on port 23 [closed]
i'm suppose to log into remote machines using telnet but in the task i have, there's no ip adresses for that ! instead i have hostnames. i'm a bit new in this and i don't know what i'm suppose to get. ...
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how to close and start a program from cmd in Windows XP?
I've been trying cmd commands such as "taskkill" on Windows XP and apparently they don't exist.
I'd like to be able to close and open a program from the cmd because I need to connect to the Windows ...
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Telnet doesnt Accept enter as newline
I'm trying to send http requests through telnet . I'm able to open the connection to server , and even able to write the first line( GET /uri httpversion) . But , when i'm trying to press enter and ...
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How can telnetd-ssl be set up on an Ubuntu server as a backup to SSH?
An error arising in /etc/ssh/sshd_config can potentially lock users or administrators out of a server that is accessible only via SSH. Telnet SSL is a backup way of accessing the server in such a ...
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Telnet not working from a specific server to specific port
I am using 2 servers (A and B) centos 7. I am trying to telnet from A to mail.smtp2go.com
serverA$ telnet mail.smtp2go.com 2525
Trying 45.33.53.153...
telnet: connect to address 45.33.53.153: ...
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Force SSH server to always and only tunnel to telnet server
I have this structure:
client ---> server(debian) ----> target
target is a telnet server.
I'm able to SSH from client to server and then execute telnet to reach target.
How can I configure server (...
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Telnet over a VPN
Im running OSX 10.10.5
Ive connected to a remote LAN via a dial in VPN.
For the VPN im using OSXs inbuilt VPN client and have the setting "send all traffic over VPN" enabled. The VPN works and i ...
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Safely Transition from RS232 “Dumb Terminal” to RJ45 Telnet/SSH
An HPUX 11i network, running on new hardware, for what they call “mission critical” operations at a unique business, terminates for the user at Sherwood 7000STs. While functional (and lightning fast ...
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How to make Putty the default Telnet handler for Windows 10?
I need to use Putty as my Telnet handler client in my ESXi lab. I tried every possible solution that I could find. But nothing worked.
Is there any command I could use in the Registry to force ...
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Using SendKeys from vbs in a total hidden way?
Here is what I am planning to do
Set WshShell = WScript.CreateObject("WScript.Shell")
WshShell.Run"cmd"
WshShell.AppActivate"telnet 192.168.1.1"
WScript.Sleep 50
WshShell.SendKeys"...
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