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Hi I am using a computer that is a part of a LAN. Now I need to know whether the LAN firewalls a particular port or not. Instead of runnning ...
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  1. #1
    Linux Enthusiast apoorv_khurasia's Avatar
    Join Date
    Feb 2005
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    624

    Firewall issues


    Hi

    I am using a computer that is a part of a LAN. Now I need to know whether the LAN firewalls a particular port or not. Instead of runnning everytime to the network administrator can I know how do know this on my own?

    Thanks in advance.
    "There is no sixth rule"
    --Rob Pike
    Registered Linux User: 400426 home page

  2. #2
    Linux Enthusiast KenJackson's Avatar
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    Jun 2006
    Location
    Maryland, USA
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    510

    Arrow nmap

    One way is to run the 'nmap' command (available in most Linux distributions) from a PC outside your LAN, giving it the address of your PC inside the LAN, or of the gateway itself. You usually get different responses to ports with no servers and ports that are blocked.

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