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Cell Relay Retreat>MPLS WG Archive>month:2002-May> msg00273



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Basic LDP Question

  • From: jh@lohi.eng.song.fi
  • Date: Fri, 31 May 2002 22:09:17 +0300
  • Cc: Shahram Davari <Shahram_Davari@pmc-sierra.com>, "'mpls@uu.net'" <mpls@UU.NET>, "'ppvpn@ppvpn.francetelecom.com'" <ppvpn@ppvpn.francetelecom.com>

packet spoofing is quite easy to prevent by a single access list at
ingress to other providers that drops a packet if its source address
belongs to the network that is used for the loopback interfaces that
terminate the ip tunnels at the pes.

what comes to subscriber links, we, and any reasonable service provider,
of course always check that the source addresses belong to the
subscribers.

-- juha