Mauro Quartini wrote:
> I need to setup a proxy mapping for tcp and i need to know what ports is
> used by ping and traceroutes.
ping uses ICMP, which doesn't have any notion of ports.
traceroute generally uses an arbitrary UDP port (the manpage for the
version which I have indicates that the default is 33434, but there is
nothing that requires that this is the case). IIRC, the Windows
tracert.exe uses ICMP. Ultimately one could write a traceroute utility
which uses any kind of IP datagram, provided that the remote end can
be expected to reply with something other than an ICMP `TTL exceeded'
message when the datagram reaches the final destination.
It doesn't really make sense to try to get either ping or traceroute
to work through a proxy. They both test IP connectivity, and the
purpose of a proxy is to provide application-layer access across a
firewall, which (by its nature) is designed to inhibit IP
connectivity.
--
Glynn Clements <[EMAIL PROTECTED]>
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