turning off telnet
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Thread: turning off telnet

  1. #1
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    turning off telnet

    i have windows xp and being as telnet is a windows function i think this is the right place to put it, the question i have is how do i disable telnet , as its not something i need and have read numorus articles on how it can be a big sucurity vunrulbilty

  2. #2
    Senior Member
    Join Date
    Mar 2004
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    Hi

    First of all: telnet (server and client) are tools, available
    for any operating system. Anyway,your question might
    involve two layers (...if you now think of OSI, you are a
    geek ):

    First, the telnet-server. Windows XP Pro comes with
    a telnet service[1], which is set to manual or disabled
    (depends on the SP). You can manually disable
    the service:
    Code:
    Start -> Run -> services.msc
    Go to "Telnet" -> Properties -> Disable
    This eliminates the standard telnet service, therefore there
    is no server listening on port 23.

    Second, if a server of any kind (or most kind) is running on
    your machine, the telnet-client can be used to connect to
    it (you can "watch" web-pages using telnet, you can "send"
    emails using telnet). If some kind of server is misconfigured,
    telnet can be used to perform malicious actions - I think, this
    is what you have read.
    However, telnet is just one tool out of a many to do so. The
    "solution" is to harden your box, ie patch the OS, patch the
    applications, configure a firewall properly, disable services
    which are not needed etc. There is a variety of tutorials
    here on AO[2,3]

    Cheers

    [1] http://www.theeldergeek.com/telnet.htm
    [2] e.g. http://www.antionline.com/showthread...hreadid=266327
    [3] e.g. http://www.antionline.com/showthread...hreadid=264811
    If the only tool you have is a hammer, you tend to see every problem as a nail.
    (Abraham Maslow, Psychologist, 1908-70)

  3. #3
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    telnet

    i checked following the instructions you gave me, and telnet is disabled , i did the trojan scan at sygates sucurity site http://scan.sygate.com/trojanscan.html (sygate personal firewall pro is my firewall), and port 23 (the port telnet runs on) is still open so gonna do some investigating later today , not sure that the subject this conversation is drifting into nesscicarly fits into this catigory , but if you could p.m me with some possiblitys and suggestions while i check this out ,it would be most helpful ,ty for all your help,im running windows xp pro with sp2 ,which i just read automatically disables telnet when installed,sorry for the bad spelling but for some reason the spell check isnt working well in here

  4. #4
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    Run a netstat -ao from the command line and look for something that is :23. Get the PID for this process and it will tell you what is open on that port. If its not listed there, then its not listening.

  5. #5
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    ok ty checked and its not listed

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