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Questions tagged [telnet]

An unencrypted client/server protocol for remotely accessing another system.

0 votes
1 answer
83 views

IP address reachable by curl and ping, but not by telnet or urllib3

Yesterday, I came across puzzling behavior in my home network. I was trying from host 192.168.1.A (macOS) to connect to a selenium cluster running on port 4444 on host 192.168.1.B (ubuntu), and kept ...
microtherion's user avatar
3 votes
2 answers
324 views

Remote control of GRUB?

Is there any way to remote control GRUB? I am interested in not having to walk to the machine when it reboots. As such, I am only interested in non-virtualized solutions. In particular, I want remote ...
David G.'s user avatar
  • 3,621
0 votes
0 answers
50 views

Why does Ctrl+C clear the current input line in my Python socket-based Telnet-like shell?

I'm building a simple shell server using raw Python sockets (not using telnetlib). The client connects using PuTTY with the Telnet connection type. The server displays a basic prompt like: [user@...
just.callme.client's user avatar
10 votes
5 answers
1k views

How to check multiple hosts for simple connectivity?

I need a tool that tells me if a connection to a host is open or not -- no data to send or receive, just see if the connection is successful. Today I use telnet. $ telnet myhost myport Trying 192.168....
chris01's user avatar
  • 1,009
0 votes
0 answers
30 views

How to configure persistent packet filtering (SMTP, Telnet) on 3 Linux Ubuntu instances on docker? IP Tables rules do not apply or are too restrictive

Problem: I have to configure 3 Linux instances that run on docker containers on OpenStack. Routers: Rout, Pout, Mout Rout - should block SMTP & Telnet connections that come from HostR1 on ...
booluser's user avatar
0 votes
2 answers
357 views

Transferring a file with ymodem over TCP network

I have a device (RELAY) I am able to telnet into using its IP address from an linux machine (CLIENT) and I'd like to copy a file from the RELAY to the CLIENT. I have very limited privileges on RELAY, ...
Tilden's user avatar
  • 11
0 votes
1 answer
53 views

Why does the network card on a Linux system boot on its own?

When I was using Telnet to remotely access my target computer on Windows and conducting latency testing with cyclictest, after several hours of execution, I suddenly found that the telnet connection ...
Vimer's user avatar
  • 67
-2 votes
1 answer
224 views

What is the counterpart of telnet client for servers based on UDP?

Telnet client is said to communicate only with servers which are based on TCP, not with those on UDP. What is the counterpart of telnet client for servers based on UDP?
Tim's user avatar
  • 107k
0 votes
1 answer
620 views

Using telnet command without protocol negotiation

I'm using telnet to connect to a serial port via a TCP/IP server. I need a raw, unfiltered, unbuffered connection, and can get most of the way there, but no matter what I do telnet sends protocol ...
Daniel Griscom's user avatar
0 votes
1 answer
125 views

Are e-mails to localhost logged with sSMTP?

I don't suppose that sSMTP will work for just sending mail on the localhost? nicholas@mordor:~$ nicholas@mordor:~$ sudo cat /etc/ssmtp/ssmtp.conf # # Config file for sSMTP sendmail # # The person who ...
Nicholas Saunders's user avatar
0 votes
4 answers
997 views

Is it "telnet:" or the port 4161 that is telling me that I'm connecting to an UDP server?

I am asking this question because I am not meeting UDP and telnet often... To prepare myself for a development, I am reading a documentation where I will have to connect to a telnet://x.y.z:4161 url. ...
Marc Le Bihan's user avatar
0 votes
1 answer
349 views

HTML telnet howto do

I have this code: <a href="telnet://localhost:33330"> <button>MUD</button> </a> <a href="telnet://localhost:24"> <button>Renegade BBS</button&...
ignatius's user avatar
  • 411
1 vote
0 answers
991 views

how to find the telnet ip address and port number of hosts running in eve-ng VM?

I am running an eve-ng VM, and running a couple of nodes (routers) in it. The common problem is, when I click on the nodes, it opens its console in the browser. I installed the client side pack, but ...
Abhishek Sagar's user avatar
0 votes
1 answer
1k views

How to see details of TLS telnet?

Debian (and other distro if you recompile the source) can use a ssl version of telnetd. telnet-ssl -z cacert=/etc/ssl/certs/mydomain.crt -z cert=/etc/ssl/certs/client.mydomain.crt -z key=/etc/ssl/...
elbarna's user avatar
  • 14.2k
1 vote
1 answer
13k views

Telnet connection refused

I have been trying to connect using telnet. I keep on getting Connection refused. After checking ports listening, I observed the port is listening to the localhost IP 127.0.0.1 but I wanted it to ...
James Emeka's user avatar

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