Paranoid Penguin - Building a Transparent Firewall with Linux, Part I
But, that will have to wait until next time. Hopefully, you now understand the difference between a standard, routing firewall and a transparent, bridging firewall. In my next column, I'll sketch out an example usage scenario (conceptually very similar to the network in Figure 3), describe a couple different approaches to selecting Linux firewall hardware and begin showing how to configure a transparent firewall, starting with bridge/switch setup. Until then, be safe!
“Linux Firewalls for Everyone” by Mick Bauer, LJ, April 2007: www.linuxjournal.com/article/9569
Internet News' report on Dejan Levaja's latter-day LAND attack against Windows Server 2003 and Windows XP SP2: www.internetnews.com/security/article.php/3488171
“Ethernet Bridge” (Wikipedia): en.wikipedia.org/wiki/Ethernet_bridge
Mick Bauer (firstname.lastname@example.org) is Network Security Architect for one of the US's largest banks. He is the author of the O'Reilly book Linux Server Security, 2nd edition (formerly called Building Secure Servers With Linux), an occasional presenter at information security conferences and composer of the “Network Engineering Polka”.
Fast/Flexible Linux OS Recovery
On Demand Now
In this live one-hour webinar, learn how to enhance your existing backup strategies for complete disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible full-system recovery solution for UNIX and Linux systems.
Join Linux Journal's Shawn Powers and David Huffman, President/CEO, Storix, Inc.
Free to Linux Journal readers.Register Now!
- Server Hardening
- BitTorrent Inc.'s Sync
- The Death of RoboVM
- EnterpriseDB's EDB Postgres Advanced Server and EDB Postgres Enterprise Manager
- The Humble Hacker?
- The US Government and Open-Source Software
- New Container Image Standard Promises More Portable Apps
- Open-Source Project Secretly Funded by CIA
- AdaCore's SPARK Pro
- ACI Worldwide's UP Retail Payments