The data transfer in a TCP/IP network is usually block-based. From a programmer’s point of view, sending data means issuing a series of “send data block” requests. On a system level, sending an ...

A top-down exploration of networking using the 5-layer model and the TCP/IP stack. HTTP, FTP, DNS, BSD Sockets, concurrent servers, checksums, reliable transport with stop-and-wait, go-back-n, ...

Although the Internet of Things (IoT) introduces remarkable ways to collect, manage, and apply data, it's also a huge vector for cyberattacks. One of the biggest vulnerabilities lies in embedded ...

What does the new "manufacturing stack" look like? We’re all familiar with the Internet’s TCP/IP stack. The bottom layer handles the details of the physical transmission of raw bits and bytes, and ...

In a previous article, we explained how you can use the sendfile() syscall to reduce the overhead of data transfer from a disk to a network. Now, we’re going to cover another aspect of network ...

It's easy to miss neat features that get added to really broad products, because they don't get publicized as the most important thing about the release. But the under-publicized features can also be ...

We got an email to [email protected] this evening that intrigued me and warranted a posting here on Opposable Thumbs. One of our own, StoneCypher, has established a bounty for the first person who ...

The NUCLEUS:13 vulnerabilities can allow remote code execution or denial of service attacks. Billions of devices could be affected. Security researchers have uncovered serious vulnerabilities in the ...

Embedded devices, especially those designed for industrial automation that have long shelf lives, are known to use a mixture of in-house and third-party code that was created at a time when software ...