Date: Wed, 12 May 2004 15:38:18 -0400 From: Joe Marcus Clarke <marcus@marcuscom.com> To: Clint Olsen <clint@0lsen.net> Cc: questions@freebsd.org Subject: Re: Traceroute supporting ICMP ECHO Message-ID: <1084390698.881.30.camel@gyros> In-Reply-To: <20040512192918.GA69895@0lsen.net> References: <20040512192918.GA69895@0lsen.net>
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--=-lOQMELNVi6iS3PH6R3x7 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, 2004-05-12 at 15:29, Clint Olsen wrote: > Hi: >=20 > 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 >=20 > Is there anyone who has considered adding this capability to FreeBSD? >=20 > Thanks, >=20 > -Clint > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o= rg" --=20 PGP Key : http://www.marcuscom.com/pgp.asc --=-lOQMELNVi6iS3PH6R3x7 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQBAon0qb2iPiv4Uz4cRAvomAKCkzAJEWCDPgws6qMjOqgXmPNvGzgCfX5RO sAjTUIOt6qAXMxhuEucT8SQ= =HVCx -----END PGP SIGNATURE----- --=-lOQMELNVi6iS3PH6R3x7--
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