• Wiring
  • The center is comprised of 100Mbit full duplex switch
  • Computers are grouped into 100Mbit and 10Mbit hubs depending on vintage and traffic patterns
  • The network connects to Internet through a 416kbit SDSL link, providing NAT (Network Address Translation)
  • A wireless network at 2.4GHz for portable computers (Proxim/Symphony network for Win98 and WinCE devices)
• Protocols
  • TCP/IP
    • Gateway: 192.168.254.254
    • DNS1: 192.168.254.1
    • DNS2: 192.168.254.2
    • Netmask: 255.255.255.0 (Class C)
    • Externally, the TCP/IP addresses are translated (NAT) to 216.200.28.168 which is mapped to otala.com and reverse mapped (courtesy of flashcom.com)
    • NS1.OTALA.COM is the primary name server (for the external world) for Otala domain (and associated domains)
    • NS1.OTALA.COM is routed to 192.168.254.2, which (internally) is called SRV2.OTALA.COM
    • Internally, all machines use 192.168.254.1 as their primary DNS1, which maps to SRV1.OTALA.COM, this way it is possible to maintain an artificial NAT-resistant mapping of IP numbers with consistent naming and least amount of fuss for the web sites
  • NetBIOS/NetBEUI/SMB/CIFS
    • Workgroup: Floyd
    • No domain authentication
    • Primary server: TaoH1 (OS/2 LanManager)
    • Secondary server: SRV2 (Linux Samba)
    • Tertiary server: TaoDT3 (Windows NT Server)
  • AppleTalk & NetWare
    • AppleTalk is supported by Linux & Windows NT, but it is disabled at the moment due to lack of Macs...
    • NetWare (IPX/SPX) is used by print servers to broadcast their status (SAP)
    • NetWare is also supported by all servers but it is not used/enabled anywhere

• Two computers (TaoDT2/Win95 and SRV2/Linux) have X-10 transceivers
• TaoDT2 runs most of the normal timed operations, but eventually SRV2 will take over these and web enable the X-10 network as well
• The network utilizes all of the X-10 house codes (A..P, 1..16) allowing 256 individually addressable devices, switches, sensors or independent macros
• At the main power panel, an active amplifier passes signals to both phases of the AC network
• The X-10 network also has a variety of wireless (RF) receivers
  • Keychain remote for locking doors -- obviously a high security rolling code system
  • Remote control and remote switch receivers for various purposes

• Hopefully to be replaced soon with a NetMeeting based intercom system with video conferencing capabilities
• Intermediate solution was to implement a CyberGenie System to handle the voice lines
• Fax lines (two fax modems) come into Win98 and Linux (EFax)
• Next step is probably going to be to install two LineJack cards before the CyberGenie system for the H.323 compatibility

System: Internet server

• www.otala.com Web server, virtual, name based Apache server with many other domains hosted as well
• ftp.otala.com FTP server, supporting anonymous and user account FTP
• postmaster@otala.com SMTP, POP3 and IMAP4 services for email -- with rigorous SPAM and relay filtering
• LDAP directory service
• The server has a massive email aliasing table, providing routing to various groups of people

House

• Large, ranch style house with various extensions... originally wired for 60 A main panel, half of the outlets with no ground (or some even with hot ground!)... about 50 years old.
• First task was to replace the main panel with an industrial 200 A main panel, and rewire most of the circuits
• Second task was to add two new fully grounded 20 A circuits for the computers
• Third task was to rip out a rather incredible sub panel and substitute it with a decent 120 A sub panel for the pool equipment and eventually The Sauna...
• Next effort is going to wire every room with the 100BaseT network, this is half way done now (9/9/99)

Machines