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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Bogon filtering (don't ban me)
On Sun, Dec 05, 2004 at 07:38:06PM +0100, Cliff Albert wrote: > > On Sun, Dec 05, 2004 at 12:36:08PM -0600, Rob Thomas wrote: > > > ] I have one question regarding the CYMRU bogon route-server. What good is > > ] it if more-specific bogons are going around in the BGP table ? > > > > At present, none. We have feature requests into some major router > > vendors to make this more useful. The goal is to provide a syntax > > similar to prefix-list that would permit you to filter on a prefix > > and anything more specific. Stay tuned! > > Indeed, that's the biggest problem at the moment. I have seen some folks > feature requesting this at juniper, but seems they all got a big NO > back. > > -- > Cliff Albert <[email protected]> Just FYI -- Team Cymru also provides IRR objects for those using automated BGP policies with ease. Using IRR objects, dependent on how *you* set it up, you should be able to filter out specifics. Their object is fltr-bogons on whois.radb.net: filter-set: fltr-bogons descr: All bogon IPv4 prefixes. filter: fltr-unallocated OR fltr-martian tech-c: RTH32-ARIN admin-c: RTH32-ARIN mnt-by: MAINT-BOGON-FILTERS changed: [email protected] 20040420 source: RIPE Example for filtering bogons from transit: import: from AS209 accept ANY and not fltr-bogons I make use of these objects for configuring BGP for customers who are multihomed to different ISP's, so far with great success. Hope this helps, -J -- James Jun TowardEX Technologies, Inc. Technical Lead Boston IPv4/IPv6 Web Hosting, Colocation and [email protected] Network design/consulting & configuration services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net
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