Deprecated Network
Revision as of 01:55, 4 January 2018 by imported>Pew
TODO: Change Name to "Deprecated Network Architecture"
Contents
IPs
| DNS | Global IPv4 | Purpose |
|---|---|---|
| security.ece.vt.edu | 128.173.88.161 | Milton's IP until luug IPs got routed behind router.ece.vt.edu |
| cvl05.ece.vt.edu | 128.173.88.145 | Snapfeed's IP, reclaimed by bmckagen |
| dog.ece.vt.edu | 128.173.88.131 | We have a Sun box labeled "dog.ece.vt.edu" but the IP appears to be in use now for VMware ESXi. |
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 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
Desired Setup
This is what I'm hoping to migrate us to:
- OpenWrt (odhcpd has built-in NDP proxying) or pfSense Router
- Partial: pfSense provides NATing on 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 cyberdelia
- All internal IPv4 addresses are static leases assigned by the router or set statically and documented somewhere; hypervisors do not have their own networks unnecessarily like wood currently does.
- Internal network on 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