Network Arch. of My Small Virtual Office

Network architecture of my small virtual office:

 Internet
    |
ADSL-Router (192.168.1.1)
    |
    |---------------------------
    |				|
Gateway(1.254/100.1)		WLAN-Router(1.253/0.1)
    |				|
----------------------------    -----------------
|    |    |    |		|		|
PDC Lin  Win  Office-PC     Printer		Roming-PC
(2) (5)  (8) (DHCP,129-252)    (0.253)		(DHCP,0.129-0.252)

ADSL-Router:

Provided by ISP, LAN IP: 192.168.1.1

WLAN-Router:

TP-Link WR-541G+, Wired LAN+Wireless LAN, WAN IP:192.168.1.253, LAN IP: 192.168.200.1

Gateway:

ASUS P5GC-MR/RS100-X5 Server Board, WAN IP: 192.168.1.254, LAN IP: 192.168.100.1

PDC:

Intel S3200SH Server Board, 500G SATA RAID-1, Windows 2003 R2 SP2, IP: 192.168.100.2

Lin:

Intel S3200SH Server Board, 500G SATA, Debian Stable (Lenny), IP: 192.168.100.5

Win:

Intel S3200SH Server Board, 500G SATA, Windows 2003 R2 SP2, IP: 192.168.100.8

Printer:

Mini-ITX Board from Shenzhen, Windows 2003 R2 SP2, IP: 192.168.200.253

Office-PC:

Desktop PC, Windows XP/Vista/7/2003, Linux/UNIX

Roming-PC:

Notebook, Windows XP/Vista/7/2003, Linux/UNIX

Principle:
1. Secure for both data desaster and network attack
2. Easy for using
3. Easy for maintenance

To cut down cost, I use only one RAID-1 on PDC (Primary Domain Controller), and backup most important data (source code, project documents, etc.) to Lin (Linux Development Server) everyday.

I found attacks from Internet is less than Intranet. Thus, security inside is more important. Firewall supplied by ADSL-Router is enough, I think. Other security policies will be supplied by OS and software deployment.

I'll record most details of deployment in my blog recently.

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