Re: Ping, ICMP and TCP Ping
From: Nikolai Alexandrov (voyager123bg_at_gmail.com)
Date: 08/27/05
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Date: Sat, 27 Aug 2005 10:26:13 +0300 To: zaka rias <sciensez@yahoo.com>
zaka rias wrote:
>hi,
>
>
>
hello
>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.
>
>
>
Ping program infact is using ICMP, ping and ICMP are two different
things infact, ping is using particular types icmp packets -
"echo-request" and "echo-reply"
>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.
>
>
Yep.
>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).
>
>
>
True, other methods also exist ;) look hping.org
>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.
>
>
>
It is ping indeed, for the general purpose of pinging host is to
determine whether it is alive. Tcp ping may work where icmp ping may not :)
>
>
>i hope you understand my english
>
>
>
>zak
>
>
>Send instant messages to your online friends http://uk.messenger.yahoo.com
>
>
>
- Previous message: jlmb: "Re: Ping, ICMP and TCP Ping"
- In reply to: zaka rias: "Ping, ICMP and TCP Ping"
- Next in thread: Barrie Dempster: "Re: Ping, ICMP and TCP Ping"
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