Jul 23 2002
Home Network Case Study
FYI: This is 60% case study, 40% vanity article.
I’m connected to the internet via Sprint Broadband. They have a microwave dish installed on my roof, which speaks to a similar dish on the Sears Tower. They assigned me a static IP, which I’ve assigned to my Linksys router / firewall / NAT server.
The rest of the network is connected to the Linksys. As of this moment, there are no open ports inbound. My internal network is subnetted into 192.168.1.0/24 and 192.168.2.0/24. The .1 subnet is my “wired” subnet, and the .2 is my “wireless” subnet. The two subnets route through a laptop running FreeBSD (radar) with a wired PCMCIA ethernet card and Avaya wireless card. My main workstation is a dual boot system (shadow / cranston) running Red Hat 7.2 / Windows XP. I use a Sun Ultra 5 (lenny) as an NFS / Backup server. A second Ultra 5 (elvis) is connected to the wired network through a hub, and acts as an MP3 Jukebox (hence the speakers, which represent my stereo). Both Ultra 5’s run Solaris 8.
The wireless network serves my laptop (otter, running Windows XP), and Camri’s desktop (ladybug, running Windows 98). The wireless network is relatively insecure at this stage. I plan on implementing IPSEC as a VPN on the wireless subnet, shutting down all other traffic. Both wireless clients run Zone Alarm firewall.
That’s about it. My near term goals include working on elvis’ jukebox functionality (I’m trying to write a web based interface for the xmms software that runs the jukebox) and building the firewall / VPN on the FreeBSD system (radar).



