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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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Cisco IOS: Show incoming Telnet sessions

According to show ? the show sessions command is supposed to show Information about Telnet connections. Although I'm connected, the sessions does not show up. Both devices run Cisco IOS. How can I look up current Telnet sessions? On the router…
user2964971
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Sending Email by SMTP IIS7.5 via php site

After my company decided to change the website we switched from old ASP.NET site to new website created in Drupal(php). The site is running locally on IIS7.5 and we also have virtual SMTP server on port 25. The problem is that email can not be sent…
Predrag
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Connect to remote host from windows using SSH/pem

So I have a .pem and I need to connect to a remote machine using that. I have been told to do: ssh -i key.pem root@remote machine Before that I am supposed to chmod 600/400 on key.pem I am on windows. When I type ssh or chmod it says unrecognized…
open_sourse
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TCP RST from telnet/ssh daemons when connecting from openvpn

I have LAN_1 and LAN_2 interconnected with an openvpn tunnel terminated ona pair of SOHO routers running busybox. One of the vpn purpose is to allow clients on both LAN_1 and LAN_2, to administer the two routers themselves, so telnet/ssh connection…
rokafeller
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postfix - connection refused from behind NAT

When attempting to telnet postfix from a different host in the same LAN through the FQDN (and thus the LAN's public IP), the following error occurs: root@mailer:/var/log# telnet mail.domain.com 25 Trying 1.2.3.4... telnet: Unable to connect to…
manchine
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Problems in testing telnet using postfix

i am quite new so please be a bit patient XD i am trying to configure a mail server using postfix (which implements a database for aliases, domains and mailboxes) and courrier on ubuntu. I have this problem when i test the command telnet: 451 4.3.0…
angeldvl
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How to start a program through putty, then disconnect but program keeps running on remote Ubuntu machine?

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 disconnected. However I need the program keep running on…
Mehdi Anis
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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
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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 expected, with one exception and that is the F3…
DaneAU
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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 XP) host 3 [h3] - The target machine. (Win…
Francesco De Lisi
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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 the most recent heartbeat intervals [504] for request …
makerofthings7
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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 installing and starting inetd and verifying it is…
Steve
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unable to connect through telnet in windows 7

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 192.168.1.106 I've got this error: Connecting To…
Nir
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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 attempts cannot be made. Note that the SAP system is…
Techboy
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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 updated and doesn't have any script at logon.…
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