HIP Resolution & Rendezvous Problem Description HIP Resolution & Rendezvous Problem Description draft-eggert-hiprg-rr-prob-desc-00 IETF-61, Washington,

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Presentation transcript:

HIP Resolution & Rendezvous Problem Description HIP Resolution & Rendezvous Problem Description draft-eggert-hiprg-rr-prob-desc-00 IETF-61, Washington, DC, USA November 12, 2004 Lars Eggert NEC Julien Laganier LIP/Sun Microsystems

November 12, 2004draft-eggert-hiprg-rr-prob-desc-002About  ID does not propose specific rendezvous/resolution solutions  instead, describes  rendezvous/resolution problem  specific associated issues  proposed solutions can reference ID and discuss whether and how they address the issues

November 12, 2004draft-eggert-hiprg-rr-prob-desc-003Terminology  resolution  resolving a host identity into its set of IP addresses  rendezvous  process by which two nodes obtain enough information about one another to initiate communication  purposefully vague, need to refine

November 12, 2004draft-eggert-hiprg-rr-prob-desc-004 Issue 1: DNS Dependency  IP works fine without a deployed DNS  HIP currently uses DNS infrastructure to resolve FQDN into  changing the architecture to depend on a deployed DNS is problematic DNS lookup | domain | >| host | IP | | name |< | identity | address | reverse DNS lookup | | |

November 12, 2004draft-eggert-hiprg-rr-prob-desc-005 Issue 2: Direct Communication  HIP’s current use of DNS prevents direct communication  must know the peer’s FQDN  can’t talk to a peer even when HIT is known  problematic, if the goal is to replace IP addresses with HITs above the network layer DNS lookup | domain | >| host | IP | | name |< | identity | address | reverse DNS lookup | | |

November 12, 2004draft-eggert-hiprg-rr-prob-desc-006 Issue 3: Reverse Lookup  reverse lookups are useful  from IP to HIT  from HIT to FQDN  current DNS-based WG draft may support  IP to HIT with new entries in in-addr.arpa  HIT to FQDN with a new root hit.arpa  possible new resolvers should support reverse lookups, too

November 12, 2004draft-eggert-hiprg-rr-prob-desc-007 Issue 4: Rendezvous with DNS  HIP currently requires DNS reachable at known IP addresses  it may be useful to let hosts use HIP to talk to DNS servers  DNS servers would have well known identities instead of IP addresses  DNS servers could be easily mobile and multihomed  (easier than with anycast)

November 12, 2004draft-eggert-hiprg-rr-prob-desc-008 Issue 5.1: Middlebox Traversal  middleboxes are a reality  for deployment success, the rendezvous procedure must traverse them  problem description exists  draft-stiemerling-hip-nat-02  solutions being investigated  result of workshop, HIP-over-STUN, etc.

November 12, 2004draft-eggert-hiprg-rr-prob-desc-009 Issue 5.2: Location Privacy  some operators are concerned about exposing globally routable IP addresses to end hosts  “you can attack it more easily if you know where it is”  proposals should consider if and how they may support location privacy

November 12, 2004draft-eggert-hiprg-rr-prob-desc-0010 Issue 5.3: Mobility & Multihoming  how to rendezvous between moving peers  for new HIP associations  (existing ones use REA)  tradeoffs  reachability  routing efficiency  high-rate mobility  proposed solutions should discuss if and how they support this

November 12, 2004draft-eggert-hiprg-rr-prob-desc-0011 Issue 5.4: Legacy Interoperation  how to interoperate between HIP and non-HIP nodes  “just use IP”  but would be nice if some of the benefits of HIP could be had  proposed solutions should discuss how they interact with legacy nodes

November 12, 2004draft-eggert-hiprg-rr-prob-desc-0012 Next Steps  would like more group feedback!  are all identified issues valid?  are we missing any?  make this an RG document?

Questions Questions draft-eggert-hiprg-rr-prob-desc-00