Mailinglist Archive: opensuse (4749 mails)

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Re: [SLE] Problem with traceroute
  • From: Anders Johansson <andjoh@xxxxxxxxxx>
  • Date: Fri, 9 May 2003 08:09:55 +0200
  • Message-id: <200305090809.55763.andjoh@xxxxxxxxxx>
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.

> Some routers blocks UDP

That would break a significant portion of the internet.



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