Re: Ping, ICMP and TCP Ping

From: migalo digalo (l.epsilon_at_gmail.com)
Date: 08/29/05

  • Next message: Burton Strauss: "RE: Ping, ICMP and TCP Ping" 
    Date: Mon, 29 Aug 2005 18:14:09 +0000
To: zaka rias <sciensez@yahoo.com>, security-basics@securityfocus.com

    i am not sure i understood youre email,but if i am right the question
    is about tcp-ping is yes or no relaying on ICMP ? the answer is no and
    i think the word ping in tcp-ping is there just because in normal case
    it will generate a pong (a response).
    btw i think tcp-ping can have any destination port not only 80 !

    hope it helps.

    2005/8/25, zaka rias <sciensez@yahoo.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: Burton Strauss: "RE: Ping, ICMP and TCP Ping"

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