RE: ... going slightly mad... tun0, ppp, ipfw, life and everything...

From: michael dreves (none@michael--karolinelund.dk.lh.bsd-dk.dk)
Date: Thu 19 Apr 2001 - 16:50:10 CEST

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From: "michael dreves" <none@michael--karolinelund.dk.lh.bsd-dk.dk>
To: <none@bsd-dk--bsd-dk.dk.lh.bsd-dk.dk>
Subject: RE: ... going slightly mad... tun0, ppp, ipfw, life and everything...
Date: Thu, 19 Apr 2001 16:50:10 +0200

prøv 'man traceroute'

DESCRIPTION
       The Internet is a large and complex aggregation of network
       hardware, connected together by gateways. Tracking the
       route one's packets follow (or finding the miscreant gate-
       way that's discarding your packets) can be difficult.
       Traceroute utilizes the IP protocol `time to live' field
       and attempts to elicit an ICMP TIME_EXCEEDED response from
       each gateway along the path to some host.

       The only mandatory parameter is the destination host name
       or IP number. The default probe datagram length is 40
       bytes, but this may be increased by specifying a packet
       length (in bytes) after the destination host name.

michael

-----Original Message-----
From: owner-bsd-dk@bsd-dk.dk [mailto:owner-bsd-dk@bsd-dk.dk]On Behalf Of
Bjarne Wichmann Petersen
Sent: 19. april 2001 16:37
To: bsd-dk@bsd-dk.dk
Subject: Re: ... going slightly mad... tun0, ppp, ipfw, life and
everything...

On Thu, 19 Apr 2001 15:57:18 +0200
Søren Klintrup <none@bigchief--aub.dk.lh.bsd-dk.dk> wrote:

> > Hmm..
> > Er Traceroute ikke UDP ??
> Nej, det er ICMP hvor den skifter lidt på TTL.

... ok... det er vist den 4. forklaring jeg har fået på hvad traceroute
laver. Er der noget at sig til at man er forvirret?

1) traceroute er icmp.
2) traceroute er udp.
3) traceroute er udp ud, icmp ind.
4) traceroute afhænger af hvilket OS der sender.

Bjarne

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