Date: Fri, 11 Jun 2004 00:40:59 +0300 From: Ruslan Ermilov <ru@FreeBSD.org> To: Max Laier <max@love2party.net> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sbin/ipfw ipfw.8 ipfw2.c src/sys/netinet in.h ip_fw.h ip_fw2.c raw_ip.c Message-ID: <20040610214059.GA3228@ip.net.ua> In-Reply-To: <200406100445.44763.max@love2party.net> References: <200406092010.i59KAcXH025699@repoman.freebsd.org> <200406100445.44763.max@love2party.net>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] On Thu, Jun 10, 2004 at 04:45:37AM +0200, Max Laier wrote: > On Wednesday 09 June 2004 22:10, Ruslan Ermilov wrote: > > ru 2004-06-09 20:10:38 UTC > > > > FreeBSD src repository > > > > Modified files: > > sbin/ipfw ipfw.8 ipfw2.c > > sys/netinet in.h ip_fw.h ip_fw2.c raw_ip.c > > Log: > > Introduce a new feature to IPFW2: lookup tables. These are useful > > for handling large sparse address sets. Initial implementation by > > Vsevolod Lobko <seva@ip.net.ua>, refined by me. > > Idea from: pf ;) > Nice! > I've asked Vsevolod, and yes, the original idea attributes to PF. Do PF tables allow addr/mask entries as IPFW tables do (I could not intuit it from reading the pfctl(8) manpage)? One nice difference (and I don't believe PF or IPFilter can do this) is this optional 32-bit tag value with no special meaning. For example, we have several thousands of client IPs, and each client is allowed (through a Web form) to limit bandwidth to some discrete values (0, 64, 128, 256, 512, and "unlimited") in Kbps to/from Ukrainian and foreign networks. We have this all implemented using less than ten IPFW tables: - table 0 lists Ukrainian networks; - table 1 lists all clients and their setting for incoming Ukrainian traffic; - table 2 lists all clients and their setting for outgoing Ukrainian traffic; and so forth. And we have a small set of rules of the form: deny ip from table(1,0) to table(0) // bw=0 pipe 1 ip from table(1,128) to table(0) // bw=128Kbps pipe 2 ip from table(1,256) to table(0) // bw=256Kbps ... where pipes 1 and 2 are configured for a bandwidth of 128 and 256 Kbps, respectively. Tables are continuously updated while rulesets stay the same. Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAyNVrqRfpzJluFF4RArt8AJ94ix+IS2vRIiAyjHKKuBb2CI57TwCfePZi zz7PPPVSIx6QfwcSOt3YKmc= =peii -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040610214059.GA3228>