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TODO: Change Name to "Deprecated Network Architecture"
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!DNS
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=== ECE Server Closet ===
==== Limitations ====
We are behind the ECE Whittemore NAT, which is on a single 100 Mbps CNS port. We have the following limitations:
* All adjustments to ECE DNS must be made through [mailto:rbrand7@vt.edu Brandon Russell]
* IP addresses are difficult to claim, because they must be forwarded through the NAT
* IPv6 is not supported behind the Whittemore NAT
Consequently, We must:
* Use an IPv6 tunnel if we want access to IPv6 addresses
* Keep all internal services (like NFS) on an internal network
<!--* Only one MAC address may appear on the port at a time (port security)
* There is no prefix delegation for IPv6, so each address must be individually requested via NDP.
This means we must:
* Use ARP proxying or 1-to-1 NAT for IPv4
* Use an NDP proxy for IPv6-->
==== Desired Setup ====
This is what I'm hoping to migrate us to:
* OpenWrt ([https://github.com/sbyx/odhcpd odhcpd] has built-in NDP proxying) or pfSense Router
** Partial: pfSense provides NATing on [[Infrastructure:Cyberdelia|cyberdelia]]
* An internal network smaller than a /8 (room for expansion)
** Done: 10.99.0.0/16
* IPsec (point-to-point and road warrior for users)
** Can be done through openWRT or pfSense
* Each VM host has a bridged ethernet port with a global IPv4 address and performs NAT to its VMs. Additional IPv4s are assigned as VMs as needed (e.g. milton and acidburn probably need their own)
** Done on [[Infrastructure:Cyberdelia|cyberdelia]]
* All internal IPv4 addresses are static leases assigned by [[Infrastructure:temp88191|the router]] or set statically '''and documented somewhere'''; hypervisors do not have their own networks unnecessarily like wood currently does.
** Internal network on [[Infrastructure:Cyberdelia|cyberdelia]] has static IPs or long-term leases.
** Cyberdelia still has too many internal networks, most of which are unnecessary.
* Each device has a global IPv6 address
** Currently provided through tunnel
=== CVL setup (deprecated) ===
Hardware:
* "luugtemp" or "temp88191": a Poweredge 2650 with 2 NICs configured as an Ubuntu router
* 8-port Gigabit unmanaged switch
* 48-port 100 Mbps managed switch (attached to sunway)
Port security evasion:
* A bash script named "Nat" which presumably does 1-to-1 NAT
* NDP proxying via https://npd6.github.io/npd6/
** This is broken an misconfigured. It doesn't properly add routes.
IPs / networks:
* temp88191 is 10.0.0.1/8 and 128.173.88.191. It provides DHCP on our internal interface
* Sunway has static IPs setup (10.0.97.10 to 10.0.97.28)
* Rackable servers: joey (10.0.4.10) and phantomphreak (10.0.4.11)
* cyberdelia's IPv4 is luug0.ece.vt.edu
** Port 9001 <-> 10.0.1.3 (cerealkiller)
** Port 9030 <-> 10.0.1.3 (cerealkiller)
* wood's IPv4 is luug1.ece.vt.edu
* milton's IPv4 is luug2.ece.vt.edu
* luug3.ece.vt.edu is (in theory) used by westinghouse (sunway's head node)
* acidburn's IPv4 is luug.ece.vt.edu
* acidburn has iodine configured as a DNS tunnel (10.152.78.1/27)
* Other tenants of our router: mjh.ece.vt.edu and mirror.ece.vt.edu
* 10.99.0.2/24 appears to be statically assigned to wood's guests.
Cyberdelia VMs - assigned 10.0.1.1/24 (not actually a separate subnet):
* dhcp-host=52:54:00:14:df:c2,10.0.1.1 # "mail" (not yet configured)
* dhcp-host=52:54:00:68:81:33,10.0.1.2 # crashoverride 2.0
* dhcp-host=52:54:00:40:9a:55,10.0.1.3 # Cerealkiller 2.0
[[Category:Deprecated]]