Questions tagged [telnet]

Telnet is a client-server protocol used to allow communication between computers in a network.

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ufw temporarily reject port on localhost for local testing

I don't understand why those two commands don't block Port 8391 locally. sudo ufw reject from 127.0.0.1 to 127.0.0.1 port 8391 telnet 127.0.0.1 8391 Trying 127.0.0.1... Connected to 127.0.0.1. Escape ...
4 votes
1 answer
17k views

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 ...
0 votes
1 answer
6k views

Connection getting dropped immediately on telnet

Am getting a connection closed by foreign host error on port 465 but working fine for another port 993. What could be the issue. % telnet x.x.x.x 465 Trying x.x.x.x... Connected to x.x.x.x Escape ...
0 votes
3 answers
4k views

Can't telnet into mail server

I have a machine running CentOS. From that machine I can't telnet into a mail server. From my local machine I can do the following command: telnet mailserver.com 25 From there I can't send emails ...
2 votes
1 answer
3k views

How to monitor visited websites on a Thomson 585 v7 router?

My home WiFi is being used by many devices, and they are taking all bandwidth, I wanna know which sites they are using, so I can block those sites in Parental control. In the web interface there's no ...
4 votes
2 answers
19k views

Enable remote management on the Zyxel NBG-460N through the telnet utility

I was going through the remote management settings on my Zyxel NBG-460N router, making sure they were not available through the WAN port, when I stupidly without thinking disabled the WWW remote ...
-1 votes
2 answers
82 views

Local Login - what is the real meaning in TELNET?

I am studying about TELNET in Computer Networks Course and having an exam tomorrow. When starting it, I saw a difference between Local Login and Remote Login. In one book, When a user logs into a ...
1 vote
3 answers
7k views

Telnet not working on Windows 10 after installing it

I have a windows 10 laptop (it's pretty old, but I don't think that should be a problem). I followed the instructions and went through control panel and enabled Telnet Client using an admin password. ...
1 vote
1 answer
20k views

TFTP transfer fails with error "Connect request failed"

I need to back up the configurations on my routers and main switches. I have installed the the tftpd64.exe tool on my local machine and am accessing the router via Telnet. I have bound the IP ...
3 votes
1 answer
16k views

Apache 2.4 reachable but refusing the connection

Not a duplicate, please be patient while trying to flag as duplicate. Thanks. Environment: Mac OS X EL Capitan 64 bit Apache 2.4.25 (Unix) ping ping 127.0.0.1 returns: 64 bytes from 127.0.0.1: ...
1 vote
6 answers
95k views

Unable to connect to server using PuTTY

I am using Windows 8 for connecting to the Linux server. It would connect fine few days back but now I can not connect to it using my computer. I can connect to that server with any other computer. I ...
-2 votes
1 answer
187 views

How do I SSH into this home router? Minimal web options, SSH connection reset by peer, telnet creates bad request

I'm looking to extract logs from my TP-Link Archer AX73 to do some basic network monitoring. I initially followed a guide involving an SNMP exporter but quickly discovered that there is no option to ...
1 vote
1 answer
168 views

Ser2net returns double lines in terminal. What to do?

I'm pretty new to Linux, but I decided to build my own console server to connect to my Cisco devices. I have a Raspberry Pi 4 on which I did install ser2net and it works just fine. But when I enter ...
0 votes
2 answers
4k views

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 ...
0 votes
1 answer
423 views

Postfix will not send/receive mail [fatal: open database … No such file or directory]

I recently installed postfix, among other programs, and have been configuring it. POP3 and IMAP are working just fine, but postfix seems to fail: # telnet localhost 25 Trying ::1... Trying 127.0.0.1.....
0 votes
0 answers
111 views

PLink telnet from Excel VBA - avoid login delay, or maintain session for multiple queries

I have a Linux box which I'm testing, and I have an Excel workbook with tables of tests I'm running. (Don't get tied up on Linux, it's just a Telnet target for the purposes of this question.) The ...
0 votes
0 answers
82 views

Can't login to the router once the connection is established using telnet

I'm trying to login to the router using telnet. Connection is successfully established and I'm asked for the login but nothing happens afterwards. I enter the username and it seems like it just looped ...
1 vote
2 answers
239 views

How to add a pause between lines in a multi-line paste into Telnet terminal on Bash?

I am using the telnet command on a Bash terminal in Linux to connect to a Console of a firmware running on an embedded system. The FW is controlled via console commands. To make things easier, I ...
1 vote
2 answers
2k views

Zyxel C3000Z VDSL modem: extra shell password?

I have a Zyxel C3000A ADSL/VDSL modem (CenturyLink branding). I have searched, and it seems it is not possible to purchase this device without CenturyLink branding and firmware. The device has the ...
481 votes
6 answers
793k views

How do I exit telnet?

I start telnet by telnet host port. How do I stop it in Windows? Shockingly, Ctrl+C doesn't work.
1 vote
0 answers
147 views

How SSH port forwarding over the internet [closed]

I want to access my remote devices SSH server Attached My remote PC (mostly a router or Raspberry Pi No internet to devices) over the internet (my PC has Internet) using my laptop. Anydesk TCP ...
0 votes
1 answer
329 views

Create Telnet connections to multiple servers and log the welcome messages

I need to remotely determine what FileZilla Server version is installed on a large number of computers . I know that if I initialise a Telnet connection to a FZ server, I will get a response that ...
0 votes
0 answers
375 views

I can ping the PC from remote server but can't connect to a port

I did my research but I still can't figure out the solution. I want to connect to port 8888 of my PC from a remote server. When I ping my PC from a remote server with ping <my ip>, it pings. ...
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1 vote
0 answers
186 views

How to print all lines of responses of command in telnet?

Perhaps this is trivial but Google searching doesn't find anything useful at all. I am using Windows 10, and I use telnet.exe to control my modem. Sometimes the responses of the commands entered is ...
0 votes
2 answers
3k views

How to hide “Connection closed by remote host” Message-Window in Putty

I working with Putty and use telnet to connect to a server. After some time the connection is closing, thats ok, but every time a Message-Box will pop-up. Is there any option to hide or avoid these ...
0 votes
0 answers
36 views

wc3270 not changing screen mode

I work with a process in an IBM i system that implies a change in the screen mode. When I login, I entered 24x80 mode, and after a couple of screens, I get to a listing that is 27x132 mode. In the IBM ...
1 vote
1 answer
560 views

How does telnet give me access to applications behind a firewall?

In a work project I'm working on, I'm required to do telnet <ip address> <port> before running my application to make sure we can reach connected services. I cannot connect to those other ...
2 votes
1 answer
2k views

How to force `telnet` (in TCP mode) to send bytes immediately?

In Linux, when I run telnet <address> <port> and then type things, it buffers data and only sends collected line when I hit Enter. Furthermore, it buffers up to 4096 characters and ...
0 votes
1 answer
5k views

Why isn't telnet logging?

As you can see below I have specified a log file and logging is enabled. You can see baretail opened in the background to the same file as the telnet logfile. I then initiated a connection that ...
1 vote
3 answers
23k views

How to open telnet port in wireless D-Link router?

I want to access D-Link DIR-600L wireless router via terminal. Can i do this by opening telnet port. How to open telnet port in wireless routers?
25 votes
7 answers
62k views

How do I quit telnet without using standard Ctrl+] combination?

The title says it all. Note that I'm using a non-US layout, Norwegian, so I can't create the Ctrl+] combination. I've found the trick before, but can't find it.
-1 votes
1 answer
265 views

DAP 1650 - What is the login password for the telnetd server?

I have a D-Link Wireless AC1200 dual band gigabit range extender (DAP-1650) and was trying to get into the telnetd server but I haven't got a password. I tried some of the usual ones: admin, password, ...
0 votes
1 answer
80 views

What is this character?

I'm running an Ubuntu machine and RDP'ing into a Windows 10 server. There's a .txt file on the server which when opened in Windows' text editor looks like this: when I open a terminal and typethe ...
0 votes
1 answer
4k views

ZTE F660, /bin/sh: Access Denied

I have a problem with my router ZTE F660, V5.2.10P1T22S (btw same problem with F609). If I do telnet from device which is connected directly to the router (LAN/WiFi) - I get full telnet access. But if ...
85 votes
5 answers
97k views

Can the telnet or netcat clients communicate over SSL?

I would like to test client connections with IMAP over SSL, HTTPS, and other secure text-based Internet protocols over SSL/TLS, the same way I would using telnet or netcat if they were not tunneled ...
0 votes
0 answers
123 views

tcptraceroute is working but telnet got timeout

I'm trying to telnet public server using specific interface. # telnet -b 10.144.238.192 google.com 80 Trying 142.251.42.14... telnet: Unable to connect to remote host: Connection timed out If I test ...
131 votes
6 answers
1.1m views

How to telnet to an IP address on a specific port?

Can anyone tell me how to telnet to an address using a specific port? I've tried the following: telnet 10.1.1.55 I suppose a route just hasn't been set up between the two hosts? What I am trying ...
0 votes
0 answers
184 views

Postfix not sending emails outside

so I'm trying to run a postfix app on my raspberry pi 4 following this tutorial: https://raspberrytips.com/mail-server-raspberry-pi/ But when I try to use telnet to send an email to an external mail, ...
1 vote
1 answer
244 views

how do I issue Stop + A command via a putty telnet session for a solaris unix sparcstation (Solaris OS version 4.0)

I am struggling to issue a Stop + A command sequence on a Solaris Sun OS Sparcstation remotely. The ultimate goal is to be able to reboot the host machine without using shutdown or reboot commands. ...
1 vote
1 answer
6k views

Manipulation of HTTPS method in telnet

I have a problem properly creating a GET request and send in telnet. Generally I want to send something like this: telent www.example.com 443(Press enter) Then: GET / HTTP/1.1 (here i try to go to ...
0 votes
0 answers
894 views

Link/protocol handler for telnet on Windows 11

The following configuration to open a telnet:// address does not work on Windows 11 . It was working on Windows 10 though HKLM\SOFTWARE\Classes\telnet\shell\open\command
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0 answers
234 views

Ping Works But Telnet Connection Fails - VPN

My laptop is connected to VPN and this VPN created a new adapted with new IPv4 assigned. I'm accessing a specific server through VPN and I want to run an application on my laptop and I need it to be ...
2 votes
0 answers
95 views

How to issue persistent commands on D-Link routers with factory firmware?

I recently bought a D-Link DIR-822 router and I can telnet into it and issue Linux commands. The thing is, say I issued random commands like; iptables -P FORWARD DROP iptables -I INPUT -p tcp --sport ...
6 votes
7 answers
41k views

connect two computers together via a rs232 serial port

Wondering if anyone knows of a solution to connect with telnet/ssh through a rs232 serial port Edit: I am looking for a way to connect to computers together via a serial port. I want to be able to ...
5 votes
1 answer
38k views

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 ...
4 votes
2 answers
2k views

Telnet: How do I un-escape?

I know that when connected via Telnet, I can hit Ctrl+] to escape. This brings me to the telnet command line interface. How do I get back to my telnet session? I occasionally hit Ctrl+] by accident ...
5 votes
1 answer
13k views

Using Telnet in Windows 10?

I'm learning some HTTP and need to use Telnet for testing purposes. I tried almost every possible input I found on the Internet, but it doesn't help, I first open Telnet command window, then Enter: ...
18 votes
5 answers
51k views

Is there a telnet utility for windows?

Is there a simple telnet command line utility for Windows 7? I am used to the telnet command that is built into UNIX, but I can't seem to find one for Windows that can be used similarly.
2 votes
2 answers
4k views

TP Link router respond to ping but admin page times out

I have TP Link router with an access point attached to it to extend bandwidth over the entire house. I did this setup around 5 years back at my family's house which works perfect to this point. ...
0 votes
0 answers
260 views

Telnet to public IP times out but doesn't when LAN address used

I have a new email server and and old email server on my network. I can send email to the new email server (let's call it mail.newmailserver.com) from Gmail and reply successfully (e.g. to/from works)....

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