Remote Connections and port identification

From: Sayo Venchetti (november_echone_at_yahoo.com)
Date: 07/22/03

  • Next message: Jude Naidoo: "Re: What to look at, source or destination port?" 
    Date: 22 Jul 2003 17:13:35 -0000
To: security-basics@securityfocus.com
    ('binary' encoding is not supported, stored as-is)

    Hey again :),

    I also was wondering what exactly a UDP, ACK, and RCP ports are. I'm
    guesing an ACK port has something to do with uploading information(?),
    and is it possible for a remote screen to launch an uplink or direct
    connection to another computer or network via an open TCP, UDP, ACK, or
    RCP port on a computer? If so, do they have to be already established, or
    can one open them from the remote computer?

    Also, I was reading a chart on remote SSH connections for a website on
    Koji Nobumoto's email of SSH, and it was sharing information on remote
    logins to windows machines from linux machines
    (http://www.uk.research.att.com/vnc/sshvnc.html) and it says at one point
    a linux machine 1 was forwarding information back over a public network
    through a secure remote network (Passing through another linux box #2) to
    another windows machine.

    Was the information being transfered going THROUGH the linux box 2, or
    was it directly connected to the windows box via some sort of secured
    connection? It raises the possibility of bypassing security on the 2nd
    linux box to direct connect to the windows box. If this was true, I'm
    thinking about performing an experiment where from my own windows
    machine, I will direct connect to a relativly unsecure LAN network down
    the street from my house (A friend of mine's computer network), and
    connect to a windows 2k pro OS box I own, bypassing his server computer.
    Is this possible? If so, I'll do it and report the results back here :P

    Thanks,
    ~Sayo Venchetti

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  • Next message: Jude Naidoo: "Re: What to look at, source or destination port?"

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