On Wed, 2004-05-12 at 15:29, Clint Olsen wrote: > Hi: > > I'm using 4.7p1 here, and I've had all sorts of fun on occasion with > traceroute and my various firewall/routers. The default traceroute will > not work since UDP traffic is apparently blocked on the return. Opening up > port ranges on my router just doesn't seem right. However, Linux > traceroute has a -I option (I think Windows tracert uses ICMP ECHO by > default) which allows it to work through a home firewall router. The > FreeBSD port for mtr also works.
Someone already pointed out you can use different protocols with traceroute. However, you wouldn't need to open a range of UDP ports to get it working. traceroute uses a "well-known" UDP port by default: 33434. This is also changeable using the -p option (very rarely, some destinations may be listening on UDP port 33434, and thus they would not send the final PORT_UNREACHABLE ICMP reply). Joe > > Is there anyone who has considered adding this capability to FreeBSD? > > Thanks, > > -Clint > _______________________________________________ > [EMAIL PROTECTED] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" -- PGP Key : http://www.marcuscom.com/pgp.asc
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