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I've installed Vuze and now I'm getting this message sometimes:

      On of your application (probably Telnet) appears to be making a potentially unencrypted und unsafe connetion to port 23.

I checked my open ports with cports but I cannot find any. I've also looked in the system events to no avail. Where do I need to look in the system events for this message and what is this message meaning?

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2 Answers

up vote 1 down vote accepted

It appears that your machine is telneting somewhere... or at least using going to another host at port 23. Telnet is unencrypted and not really safe to use since someone running a packet capture (like Wireshark) can see everything you are sending to that port 23.

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The netstat command in a Command Prompt window will show a list of listening programs and outgoing connections

C:\>netstat -ab

Active Connections

  Proto  Local Address          Foreign Address         State           PID
  TCP    Black:http             Black:0                 LISTENING       1728
  [Apache.exe]
  …
  TCP    Black:2049             stackoverflow.com:http  ESTABLISHED
  [chrome.exe]
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Can I sort it like in Linux? –  Phpdna Apr 25 '12 at 15:15
    
@David: If you want Windows to be like Linux, you may wish to install Cygwin, unxutils or gnuwin32. Otherwise you'll have to wrestle with weak command-prompt shell & tools or learn PowerShell. –  RedGrittyBrick Apr 25 '12 at 15:18
    
I have cygwin installed. Can I use it? –  Phpdna Apr 25 '12 at 15:19
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