Andre Oppermann 55db762b76 Extend versrcreach by checking against the rt_flags for RTF_REJECT and ... RTF_BLACKHOLE as well. To quote the submitter: The uRPF loose-check implementation by the industry vendors, at least on Cisco and possibly Juniper, will fail the check if the route of the source address is pointed to Null0 (on Juniper, discard or reject route). What this means is, even if uRPF Loose-check finds the route, if the route is pointed to blackhole, uRPF loose-check must fail. This allows people to utilize uRPF loose-check mode as a pseudo-packet-firewall without using any manual filtering configuration -- one can simply inject a IGP or BGP prefix with next-hop set to a static route that directs to null/discard facility. This results in uRPF Loose-check failing on all packets with source addresses that are within the range of the nullroute. Submitted by: James Jun <james@towardex.com>		2004-07-21 19:55:14 +00:00
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ipfw2.c	Fixed a bug spotted by compiling with -Wall.	2004-06-10 07:51:11 +00:00
ipfw.8	Extend versrcreach by checking against the rt_flags for RTF_REJECT and	2004-07-21 19:55:14 +00:00
Makefile	Uncommented WARNS=0. ipfw2.c is full of printf format errors that are	2002-07-11 17:33:37 +00:00