Advanced open source networking resources

gearsIt is no secret that computing resources are rapidly migrating from physical infrastructure to a combination of physical, virtual and cloud environments. A similar trend is also evident in the networking space, with network control logic shifting from proprietary hardware-based platforms to open source software-based platforms (SDN or Software Defined Networking).

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Open source education culture at Penn Manor

wowPenn Manor is a short film sponsored by Red Hat as part of the Open Source Stories series. The film tells the story of Penn Manor, a secondary school in the United States in which IT director Charlie Reisinger introduced open source software and culture as part of a 1:1 laptop program. Open source was integral to the program because Reisinger wanted students to become “engineers, inventors, and architects and not technology tourists”.

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CentOS 7 firewalld NAT router

gearsI recently built a simple gateway/router using firewalld and NAT on CentOS 7 and thought I’d share the firewall-cmd commands used. The machine in question was used as a gateway/router for two VMWare virtual networks being used by students to build Windows domains. As their domain controllers were running DHCP servers, their networks had to be isolated from the TAFE (college) network and each other to avoid problems, but the students also needed access to the TAFE network for DNS forwarding and internet access purposes.

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Braintree payments: first impression

brainI have just finished my first integration of Braintree‘s online payments system into a ticketing and event bookings web app. I’m impressed with the overall experience and with how easy Braintree have made this integration for developers, and certainly expect to use them again. No, this is not a paid advertisement and there are no affiliate links on this page.

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A sideways look at FreeBSD

freebsdApart from a stint with Slackware, I’ve been squarely in the Red Hat ecosystem since around the year 2000 when I first got into Red Hat Linux 6.0. Today my production servers run CentOS 7 and it does a great job. Nevertheless I am currently evaluating FreeBSD as a server operating system to run what is now my standard stack: Nginx, PHP-FPM and MariaDB.

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Update CentOS 7 to Golang 1.6

wowCentOS 7 is a rock-solid development and production platform, but this stability often means that default web-related packages are outdated. It turns out golang is no exception: the default CentOS 7 version is 1.4, whereas I wanted 1.6. There have been some changes in golang project layout between the two versions and I figured I may as well get with the program and update before starting a new API project.

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