On 17/07/10 12:35, Peter Garrett wrote:
On Sat, 17 Jul 2010 00:07:00 +1000
Basil Chupin<[email protected]> wrote:
If a router doesn't respond to an ICMP ping then it does not exist.
Right? Or is this wrong?
From the headers of your mail:
Received: from unknown (HELO [192.168.1.3]) ([124.171.111.123])
by outbound.icp-qv1-irony-out6.iinet.net.au with
ESMTP/TLS/DHE-RSA-AES256-SHA; 16 Jul 2010 22:06:55 +0800
So, your IP does indeed exist, regardless of pings, and indeed if
someone read the headers they would also know the LAN address of your
machine (192.168.1.3).
If I wanted to know more I could point nmap at your IP and scan to see
if anything was listening. (I won't, and neither I hope will other
list members).
The fact that you can or cannot be "pinged" is completely
irrelevant.
Also, it's worth remarking that disallowing icmp is actually against
the "RFC" rules (Requests For Comments). So, good Netizens don't block
pings ;)
grc.com deals in scare-mongering. The "Shields Up" facility is useful,
but the insistence on so-called "stealth" is nonsense.
Peter
Thanks Peter and Michael. I think I've got the message :-) : nothing is
sacred or safe on the 'net. And I won't worry about pings nomore... :-) .
BC
--
And God created Woman; and to repent He then created Beer.
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