Home ›

Kernel Korner - Linux as an Ethernet Bridge

Issue 135

From Issue #135
July 2005

May 26, 2005  By Jim Robinson
 in
It passes packets like a bridge and filters like a firewall. Put extra security and versatility in front of any server or device, without reconfiguring it.
Acknowledgements

The author sends kudos to the guys and girls that wrote the Bridging code and for the authors of the ebtables command set for producing stable, usable tools and releasing them under the GPL.

Resources for this article: /article/8261.

Jim Robinson is President of Linux Solutions Provider, Inc., a consulting company based in Macon, Georgia. He enjoys being a husband and a dad, playing guitar and, of course, using Linux.

______________________

Comments

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

Note to readers: The author

Kevin Borders's picture
Submitted by Kevin Borders (not verified) on Tue, 10/13/2009 - 21:14.

Note to readers: The author says many times that brctl causes your machine to act like a HUB. This is incorrect, brctl will make your machine behave like a SWITCH. If a particular MAC address has sent some packets on one of the bridge ports, brctl will only forward packets destined for that MAC address to that one port, not all ports.

Bridge as router

Beginer 's picture
Submitted by Beginer (not verified) on Fri, 02/20/2009 - 05:28.

How to configure Bridge as Router?
I have box, which acts as bridge und AP. Internet => Bridge,AP => Laptop WiFi. I have to change MAC Address on Laptop-WiFi (that know my Internet Provider). Bridge is transparent. I want set up MAC Addres on Bridge interface from Internet porvider and to connect to WiFi net with whatever MAC Address.

Webcast
More Resources
How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers

Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.

Learn More

Sponsored by AMD

White Paper
More Resources
Red Hat White Paper: Using an Open Source Framework to Catch the Bad Guy

Built-in forensics, incident response, and security with Red Hat Enterprise Linux 6

Every security policy provides guidance and requirements for ensuring adequate protection of information and data, as well as high-level technical and administrative security requirements for a system in a given environment. Traditionally, providing security for a system focuses on the confidentiality of the information on it. However, protecting the data integrity and system and data availability is just as important. For example, when processing United States intelligence information, there are three attributes that require protection: confidentiality, integrity, and availability.

Learn more about catching the bad guy in this free white paper.

Learn More

Sponsored by DLT Solutions