| 其他書名 | Closing Borders with Open Source : how to Set Up, Configure, and Manage Your Linux Firewall, Web Proxy, DHCP, DNS, Time Server, and VPN with this Powerful Open Source Solution |
| 出版 | Books24x7.com, 2006 |
| URL | http://books.google.com.hk/books?id=jIa1AQAACAAJ&hl=&source=gbs_api |