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hi to all.. i am confused with one thing.. pls try to help me out.. i have secured my server by implementing the firewall.. i block some ports and open ...
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  1. #1
    Just Joined!
    Join Date
    Sep 2004
    Posts
    21

    How To Hide Open Ports??


    hi to all..

    i am confused with one thing..
    pls try to help me out..

    i have secured my server by implementing the firewall..
    i block some ports and open some ports..

    the ports which i open is basically of common use like ftp, ssh, http mysql etc.

    now my question is..
    if i am opening these ports then anyone having my ipaddress can have a look on open ports with nmap command..
    and if any one is having the idea of open ports then he can try to enter from that open port and can easily enter..

    so give me the solution of hiding the ports which i opened.... so that no body can see how many ports i opened??


    Reply Me Soon..
    Regards
    KeenLearner

  2. #2
    Linux User
    Join Date
    Feb 2005
    Posts
    290

    Re: How To Hide Open Ports??

    Quote Originally Posted by keenlearner
    hi to all..
    hi

    Quote Originally Posted by keenlearner
    i am confused with one thing..
    pls try to help me out..

    i have secured my server by implementing the firewall..
    i block some ports and open some ports..
    hmm... how did you do it? during installation? "medium, high, no firewall" thinggie??


    Quote Originally Posted by keenlearner
    the ports which i open is basically of common use like ftp, ssh, http mysql etc.
    looks like what i'm guessing is right, if you're using redhat family's distro :P

    Quote Originally Posted by keenlearner
    now my question is..
    if i am opening these ports then anyone having my ipaddress can have a look on open ports with nmap command..
    of course!!!!!!

    Quote Originally Posted by keenlearner
    and if any one is having the idea of open ports then he can try to enter from that open port and can easily enter..
    here comes the funny part. Anyone can easily enter your opened port 80 and browse what you're providing to the public (forum, your personal page, your pets' picture, your ....)
    easily enter in the sense he/she is able to rm -rf / on your box? yeah, that's called gaining unauthorised access into your system a.k.a. hacking. Close unnecessary port by unloading the unnecessary services. If you really need to have http / ftp running, patch your system as soon as your vendor releases the updated package.


    Quote Originally Posted by keenlearner
    so give me the solution of hiding the ports which i opened.... so that no body can see how many ports i opened??
    depends on the situation. in a LAN environment, you want to prevent the public from visiting your box thru port 80 or 21 or something else, use firewall. A public accessible server? afaik, no way.....

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