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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.

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

Telnet provides no inherent security and so is becoming less commonly supported. On modern UNIX-like systems it is usually replaced with more secure and flexible SSH protocol.

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Telnet reconnect or maintain session?

We currently have several RFID Scanners connected to the backend via a telnet client. However due to coverage of our wifi these scanners might lose there connection for a small period of time. The devices now disconnect and fail to restart their…
DW24da
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telnet only works one way

I recently cloned two AWS CentOS 7 instances from a physical server. From the first AWS instance, I can telnet on port 22 to the second AWS instance. From the second AWS instance, I cannot telnet to the first AWS instance. [root@secondservername…
hokie1999
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Allowing IP & Port specific traffic for card terminal

I hope you can help me :) I am setting up a credit card terminal in my store network. (It‘s just a mobile LTE Router with a static IP address and a switch) The payment processing provider requires me to allow traffic to their specific IP adresses…
maxig
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Connecting To 127.0.0.1…Could not open connection to the host, on port 8123: Connect failed

Well aware this has been asked, but I have scoured Google/StackOverflow and tried every single suggested solution, without being able to connect to port 8123 on my local (which is running Windows 10). It is worth noting that I CAN connect when I…
KateMak
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How to use curl and telnet instead of cgi-fcgi?

I am using this script.c: #include #include int main (void) { while (FCGI_Accept() >= 0) { printf("Status: 200 OK\r\n"); printf("Content-type: text/html\r\n\r\n"); …
Грузчик
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Telnet into Red Hat?

How do I enable telnet for a Red Hat Linux system?
bubba
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Telnet connects to server but cannot transmit data

Our client has a server and our web apps run on port 443 and 2000. Our client has two groups of IP addresses. One group is for the computers used in the company building. These computers can browse both web apps. Another group of IP addresses is for…
zarax
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Simple code running in systemd exits to fast?

I had this old code base running in xinet d. It was basically a simple python script that waited for standard in to come in on a socket, it would do something with it and respond on standard out. So I heard xinetd is no longer used, so I tried to…
Codejoy
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How can I lock down an SSH and/or telnet user to only run a custom shell and no other commands or programs?

I asked this question on stack overflow, but I thought it might be more appropriate here on serverfault, because it has to do with system administration and security. I am looking to prototype a webservice, without having to deal with HTTP and other…
derekmc
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telnet disabled, server 2012r2 still listening on port 23

How else can I disable telnet to comply with a security audit? The Telnet services roles are not enabled on this server. But it is LISTENING at 0.0.0.0:23. Also there is no local windows firewall to utilize.
Benjy
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Azure VM, unable to connect from internet on ports configured (9089-9095)

I have created a VM on Azure with below steps:- Created VM Assigned a public static IP Created a new Virtual Network (Subnet default - (10.0.0.0/24) Did not create a NSG initially (NIC NSG was NONE - Not BASIC OR ADVANCE) No firewall or…
Ujwal Tamminedi
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Host is not resolved but connecting via telnet, can somebody explain how?

In aws ec2 instance, rds host name is not resolved by ping or nslookup but it is still able to reach via telnet or nc how ? ~# nslookup xxxx.rds.amazonaws.com nslookup: can't resolve '(null)': Name does not resolve but in nc ~# nc -vv …
Smart Athiyas
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Is there a "server" version of telnet?

If I want to quickly connect to a socket as a client and type something I can use telnet. Is there a version of telnet or a similar program that provides the server-side of this? In other words, is there some sort of "telnetserver" program I can…
CaptainCodeman
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how to build a telnet middleware server

I need to comunicate an old crm system with a new asset. Crm system can only send fixed commans over telnet connection but this new asset can only receibe commands via api rest. Im planning to intercept telnet connection , parse commands , modify…
user2977753
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Telnet not working with windows 10

I am using telnet on windows 10. I would like to manually set get requests to chosen server. If I type (just example it can be any site): telnet www.cnn.com 80 for a second I see message 'connecting to www.cnn.com'. Text on the page then disappears…
FrenkyB
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