9 May
2003
9 May
'03
06:36
On Friday 09 May 2003 08:09, Anders Johansson wrote:
On Friday 09 May 2003 07:39, Fabio De Francesco wrote:
The things are opposite: Traceroute uses UDP protocol, while Tracert uses ICMP echo request. They both elicit the ICMP expired on transit message when TTL goes to '0'.
I was under the distinct impression that machines didn't send ICMP error messages about ICMP packets.
You know that ICMP echo reply are solicited by ICMP echo request.
Some routers blocks UDP
That would break a significant portion of the internet.
I intended to say UDP with Time To Live set to '0'. Fabio