Re: Traceroute supporting ICMP ECHO
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 signature.asc Description: This is a digitally signed message part
Re: Traceroute supporting ICMP ECHO
On May 12, Mike Hogsett wrote: > > I think its already there. ( 4.9-RELEASE-p3 ) > > From traceoute(8) > >-P Send packets of specified IP protocol. The currently supported > protocols are: UDP, TCP, GRE and ICMP. Other protocols may also > be specified (either by name or by number), though traceroute > does not implement any special knowledge of their packet for- > mats. This option is useful for determining which router along a > path may be blocking packets based on IP protocol number. But > see BUGS below. Doh! I'll go crawl in my hole now... Thanks for the cluepon! -Clint ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Traceroute supporting ICMP ECHO
> 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. > > Is there anyone who has considered adding this capability to FreeBSD? I think its already there. ( 4.9-RELEASE-p3 ) From traceoute(8) -P Send packets of specified IP protocol. The currently supported protocols are: UDP, TCP, GRE and ICMP. Other protocols may also be specified (either by name or by number), though traceroute does not implement any special knowledge of their packet for- mats. This option is useful for determining which router along a path may be blocking packets based on IP protocol number. But see BUGS below. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Traceroute supporting ICMP ECHO
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. 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]"
