Redundant Internet connections on consumer hardware with OpenWrt and Mwan3
Double Track
© Lead Image © sermax55, 123RF.com
Redundant Internet uplinks are standard on big corporate networks, but they are still the exception for the home and small-office sector. If you're ready to experiment, you can set up redundant Internet connections on your own home router with OpenWrt and the powerful Mwan3 extension.
A router with two Internet connections provides many advantages, including better network performance and continued operation if one link fails. Redundant Internet connections have long been standard for data centers and enterprise networks, but they are relatively rare in homes and small offices.
One reason for the absence of redundant connections on small networks is cost, but even when cost is not an issue, home users and small-time admins are often intimidated by the technical issues of supporting two Internet connections through the same inexpensive router.
The ever-resourceful open source universe, however, does provide an inexpensive solution for running redundant Internet connections through an inexpensive home router. The solution begins with OpenWrt, a Linux distribution designed to run on routers and other embedded devices. If you are adventurous enough to install OpenWrt on your router device, you will discover you have much more control over the device than you ever had with the standard router firmware interface. In particular, the Mwan3 extension available for OpenWrt provides support for redundant connections. Mwan3 dynamically manages access via two or more uplinks, uses Ping to ensure that the links are working and, when necessary, adds NAT support and dynamic IPtables rules.
[...]
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Plasma Bigscreen Returns
A developer discovered that the Plasma Bigscreen feature had been sitting untouched, so he decided to do something about it.
-
CachyOS Now Lets Users Choose Their Shell
Imagine getting the opportunity to select which shell you want during the installation of your favorite Linux distribution. That's now a thing.
-
Wayland 1.24 Released with Fixes and New Features
Wayland continues to move forward, while X11 slowly vanishes into the shadows, and the latest release includes plenty of improvements.
-
Bugs Found in sudo
Two critical flaws allow users to gain access to root privileges.
-
Fedora Continues 32-Bit Support
In a move that should come as a relief to some portions of the Linux community, Fedora will continue supporting 32-bit architecture.
-
Linux Kernel 6.17 Drops bcachefs
After a clash over some late fixes and disagreements between bcachefs's lead developer and Linus Torvalds, bachefs is out.
-
ONLYOFFICE v9 Embraces AI
Like nearly all office suites on the market (except LibreOffice), ONLYOFFICE has decided to go the AI route.
-
Two Local Privilege Escalation Flaws Discovered in Linux
Qualys researchers have discovered two local privilege escalation vulnerabilities that allow hackers to gain root privileges on major Linux distributions.
-
New TUXEDO InfinityBook Pro Powered by AMD Ryzen AI 300
The TUXEDO InfinityBook Pro 14 Gen10 offers serious power that is ready for your business, development, or entertainment needs.
-
LibreOffice Tested as Possible Office 365 Alternative
Another major organization has decided to test the possibility of migrating from Microsoft's Office 365 to LibreOffice.