Want to Learn Ethernet? Write Your Own Darn AVR Bootloader!

There’s a school of thought that says that to fully understand something, you need to build it yourself. OK, we’re not sure it’s really a school of thought, but that describes a heck of a lot of projects around these parts.

[Tim] aka [mitxela] wrote kiloboot partly because he wanted an Ethernet-capable Trivial File Transfer Protocol (TFTP) bootloader for an ATMega-powered project, and partly because he wanted to understand the Internet. See, if you’re writing a bootloader, you’ve got a limited amount of space and no device drivers or libraries of any kind to fall back on, so you’re going …read more

Continue reading Want to Learn Ethernet? Write Your Own Darn AVR Bootloader!

Cisco patches critical flaws in DNA Center and Prime Infrastructure

Networking giant Cisco has released patches for several of its products, warning that the updates are for critical bugs found during internal testing. Labeled CVE-2018-15379, a vulnerability in Cisco Digital Network Architecture (DNA) Center could allo… Continue reading Cisco patches critical flaws in DNA Center and Prime Infrastructure