troll

							Project Orpheus
      Network Issues




          Ryan Troll
   Carnegie Mellon University
Why is this an issue?
   Microsoft migration towards IP only
   Migration requires full backwards compatibility
     IPX / NetBIOS functionality
     No user visible network configuration
     Computer name settable by end user
     User name in any char set
WINS to DNS Migration
   WINS handles clients changing names, IP address,
    even across subnets
   Utilizing DHCP Dynamic IP addresses and Dynamic
    DNS
Network Configuration
   Uses DHCP for IP address configuration
   In the absence of DHCP, hosts automatically
    configure an IP address
     Only when there is no DHCP response
     Continues to check for a DHCP server
     Specific subnet
     Present in Win98/NT5 (And MacOS 8.5)
Network Configuration: Problems
and Solutions
   CMU currently assigns static IP addresses to all
    hosts via DHCP
   Previously, no address assignment via DHCP
    resulted in an error message to the user
   Users now receive no error message, but can’t do
    anything
   Solution: Proposed DHCP extension to allow DHCP
    server to tell clients ‘I have no address for you, and
    you should not auto-configure one either.’
DNS Changes - Dynamic Update
   User settable names utilizing secure DNS Dynamic
    Update
   Security mechanism not standardized yet, but in the
    standardization process through the IETF.
   Mechanism based on Kerberos5
   Clients (or DHCP server) update A and PTR
    records
   Appears to not handle CINDR correctly.
   CMU: Testing CINDR, sending bug reports
DNS Changes - Character Sets
   NetBIOS naming allows non-ASCII characters in
    names.
   For MS to move to DNS only, must be able to do so
   MS is in the process of standardizing non-ASCII
    DNS with the IETF.
Project Orpheus: Current Network
Projects
   Attempting to use Unix DHCP and DNS servers to
    support a full NT5 infrastructure
     No dynamic DNS
     BIND 8.x, ISC DHCP

   Evaluating Microsoft DNS Extensions
     Non-ASCIIinteroperability
     Dynamic Update in a CINDR zone

   Autonet DHCP extensions
Project Orpheus: Current Network
Projects
   Evaluation of new browsing mechanism
     NoIPX, NetBIOS, or NT4 backwards compatibility
     How does the NT4 backwards compatibility
      mechanism fit in?
   Evaluation of dialup client support
What We Haven’t Touched (Yet)
   IGMPv2 / Multicast
   NAT
   VPNs (L2TP / PPTP)
   IPSec
   IPv6
   RSVP
Questions?
   Ryan Troll <ryan@andrew.cmu.edu>
   http://asg.web.cmu.edu/orpheus