Determining availability of a remote machine

Kim Holburn kim.holburn at
Wed Apr 2 18:47:27 EST 2003

At 6:20 PM +1000 2003/04/02, Warwick Mitchell wrote:
>On Wed, 2 Apr 2003, Steve Jenkin wrote:
>> 'traceroute' relies on the proper intermediate handling of expired 'time to
> > live', not ICMP ECHO (ping).
> >
>It's still ICMP.

It relies on an icmp reply to a udp packet (port not in use or some such.  The icmp is generated by the remote machine not traceroute.

Kim Holburn 
Network Consultant - Telecommunications Engineering
Research School of Information Sciences and Engineering
Australian National University - Ph: +61 2 61258620 M: +61 0417820641
Email: kim.holburn at  - PGP Public Key on request

Life is complex - It has real and imaginary parts.
     Andrea Leistra (rec.arts.sf.written.Robert-jordan)

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