It used to be that if you used one particular vendor’s automation products or sensors, you were locked in forever. With today ...

“Not being overcomplicated is Modbus TCP/IP’s biggest draw, not only for PLCs, but especially for PC-based applications,” said Jason Haldeman, senior product specialist for I/O and networking at ...

Networking is a fundamental aspect of modern computing, underpinning everything from small home offices to large enterprise data centers. For Linux system administrators and network engineers, a ...

When I use the netstat command to look at the open TCP/IP connections on my PC, there are connections that should be closed that are in the TIME_WAIT state. What is this, and why do connections stay ...

We start this week with a real geek out: If you have ever had to weigh the benefits and tradeoffs of Apache as an application server (for example, using Tomcat vs. node.js (“a platform built on Chrome ...

TCP wrappers are intended to provide wrapper daemons that can be installed without any changes to existing software. Most TCP/IP applications depend on the client/server model — i.e., when a client ...

Terms can sometimes play tricks on the mind. Take EtherNet/IP, for example. Many people will read “IP” as internet protocol and think that EtherNet/IP refers to plain old, standard industrial Ethernet ...