File transfer over wan using sockets

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  • cvissy

    File transfer over wan using sockets

    Hi all,

    Have written a small client app to transfer a text file to a server
    running on another pc in the LAN...

    This works beautifully!! Not that difficult to do over a LAN right ?

    So My concerns deal with WAN communication.. .

    - What security issues must i cater for (like firewalls) and how do I
    do that ?

    - If my server app will be running in another building on its own LAN
    of 5 pcs, how do i differentiate it from the other 4 pcs...

    In my LAN all i had to do was specify the IP address and port and
    didnt have to worry about firewalls, user authentication or
    subnet-masks... Do I have to now with the WAN?

    Thanks

    Chris
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