Re: Ping, ICMP and TCP Ping

[migalo digalo <l.epsilon () gmail 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
>
>
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