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telnet: how to telnet to specific port?

Posted on 2010-09-01
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Last Modified: 2012-05-10
Hello Experts,

how to test a port by telneting to it?

thx,
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Question by:epifanio67
6 Comments
 
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by:
pcchiu earned 100 total points
ID: 33581294
telnet x.x.x.x 25 (space port number)
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by:IT-Monkey-Dave
IT-Monkey-Dave earned 200 total points
ID: 33581314
telnet [port number]
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by:IT-Monkey-Dave
IT-Monkey-Dave earned 200 total points
ID: 33581323
umm, crud,
telnet [host] [port number]
And pcchiu beat me to it anyway
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by:Jamie_Wilson
Jamie_Wilson earned 100 total points
ID: 33581325
telnet host port

e.g.

telnet www.google.co.uk 25 will test port 25 on www.google.co.uk
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Assisted Solution

by:Dave Baldwin
Dave Baldwin earned 100 total points
ID: 33581498
Note that those only work if something is listening on the machine to that port and will accept a telnet connection.  Instances that require a secure connection aren't going to succeed either though you may be able to use ssh to connect to some of them.
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Author Closing Comment

by:epifanio67
ID: 33582571
Thank you experts....
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