How does one make a temporary telnet responder with PowerShell?

Question

I'm looking into making a temporary Telnet server so I can remotely test network connectivity and data transmission integrity. I don't have the authority to install the telnet server Windows Feature.

what's the purpose of this? which command are you planning to enter? — Alex G, Oct 20 '12 at 23:53

score 8 · Answer 1 · answered Oct 20 '12 at 23:20

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Don't make a telnet server.

Install OpenSSH and you'll have a secure version of telnet which you can use to run remote commands - all without having to write a single line of code.

answered Oct 20 '12 at 23:20

Jay

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What ports do I have to forward to use OpenSSH? – Piccolo Oct 20 '12 at 23:21
Assuming you use the default: 22. – Jay Oct 20 '12 at 23:23
I second this and 22 is the port you need for ssh – egorgry Oct 20 '12 at 23:23
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... and if it wasn't clear, Telnet is insecure and isn't recommended for production use by any sane administrator, and hasn't been recommended for a long time. – David W Oct 20 '12 at 23:27

score 1 · Answer 2 · edited Apr 13 '17 at 12:14

1

Check out this thread of mine, titled How can I connect to a Windows server using a Command Line Interface?, which might be helpful in accomplishing what you're really trying to do.

edited Apr 13 '17 at 12:14

Community

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answered Oct 20 '12 at 23:32

HopelessN00b

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This is good, and includes various options. An ssh server is good if you are coming remotely from a Linux machine; but using PSExec or native Windows tools may be best if you are coming remotely from another Windows machine. – Lars Rohrbach Oct 21 '12 at 00:27

score 0 · Answer 3 · edited Oct 21 '12 at 00:45

0

Here are steps from Microsoft, to achieve your goal.

edited Oct 21 '12 at 00:45

HopelessN00b

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answered Oct 20 '12 at 23:57

Alex G

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Really should come with a disclaimer not to actually do this, though. – HopelessN00b Oct 21 '12 at 00:47
@HopelessN00b: OP should have think about this, before starting this bad idea. What to lose here? =)) – Alex G Oct 21 '12 at 00:49
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I've got no problem with telling someone how to shoot their foot off, but as a sysadmin, a big part of the job is at least forewarning the person in question that they're about to blow their foot off. A lot of them pull the trigger anyway, and when they do, it's not your fault, so long as you warned them in advance. – HopelessN00b Oct 21 '12 at 00:58
Forget about them. Less people, less problems. – Alex G Oct 21 '12 at 01:05
I've enabled it, now what command do I use to start it up? Yes, I know Telnet is risky business as it's not encrypted. It's more of a test than anything. – Piccolo Oct 21 '12 at 01:06
Please don't post link only answers. Links die. – John Gardeniers Oct 21 '12 at 02:51
@JohnGardeniers: from Microsoft site? I doubt it. – Alex G Oct 24 '12 at 09:06
@Radio, Microsoft especially. They periodically move things around, causing untold numbers of dead links. – John Gardeniers Oct 24 '12 at 09:15
@JohnGardeniers: I saw they practice a lot of rewrites when they remove link. Plus they realize - they did bad job by causing dead links. Much better lately. =) – Alex G Oct 24 '12 at 09:17

How does one make a temporary telnet responder with PowerShell?

3 Answers3