Ping, ICMP and TCP Ping

From: zaka rias (sciensez_at_yahoo.com)
Date: 08/25/05

  • Next message: Mike Fetherston: "RE: Prevent use of Open Share" 
    Date: Thu, 25 Aug 2005 09:22:26 +0100 (BST)
To: security-basics@securityfocus.com

    hi,

    Im learning protocol tcp/ip and icmp, and as far as i
    know that Ping (software) is using ICMP protocol to
    transmit packets and PING is identic with ICMP.

    I have always wrapped my thinking that ICMP (and Ping
    Program) echo/reply was a port 0 thing (like someone
    said in
    http://forum.sans.org/discus/messages/78/10869.html?1110164175
    ), and that's wrong.

    Then i found something called TCP-PING. TCP PING can
    be described as a TCP packet with the ACK flag set,
    destined for port 80 of the target host (Mark
    Wolfgang, Host Discovery With NMAP).

    i just wonder if this kind of method called TCP-PING,
    when actually TCP-PING isnt using ICMP protocol, and
    once more -> TCP PING 's using port when actually
    PING program is not using a port to communicate.

     

    i hope you understand my english

    zak

    Send instant messages to your online friends http://uk.messenger.yahoo.com

  • Next message: Mike Fetherston: "RE: Prevent use of Open Share"

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