BGP filtering by Community
Allow a BGP Route Map match a community.
BGP communities are simply values attached to a route that is sent to BGP peers. This values have special meanings to the peers and cause specific actions to be taken, depending upon the values assigned. A customer who is multi-homed to a service provider can often use communities to tell the service provider how to route traffic to the customer autonomous system (AS).
"A community is a group of destinations which share some common property. Each autonomous system administrator may define which communities a destination belongs to. By default, all destinations belong to the general Internet community." (http://tools.ietf.org/html/rfc1997)
Kennis Koldewyn commented
It's not just data centers and ISPs that could use this functionality. I'm working at a small business using the Sophos UTM, and we would like to take advantage of the Spamhaus BGP feed of three of its blocklists: the Botnet Controller List (BCL), and the DROP (Don't Route or Peer) and EDROP (Extended DROP) lists, which consist of netblocks that are hijacked or leased by professional spam or cyber-crime operations. See http://www.spamhaus.org/faq/section/BGPf%20FAQ for details. The Spamhaus BGP feed uses communities as categories (to my rather vague understanding) for the three lists, so without support of the BGP community feature, it appears that we can't make use of the Spamhaus feeds. This use of BGP might be worthwhile for a lot of businesses!
the BGP in SOPHOS UTM is very good, but need same features with communities and blackhole, this is very important features for secure in BGP.