Playing a video game online is almost second nature now. So much so that almost all multiplayer video games have ditched their split-screen multiplayer modes because they assume you’d rather just be alone at your house than hanging out with your friends. This wasn’t always the case though. In the early days of online multiplayer, systems had to rely on dial-up internet before broadband was readily available (and still had split screen if you didn’t even have that). Almost no one uses dial up anymore though, so if you still like playing your old Dreamcast you’re going to have to do some work to get it online again.
Luckily for all of us there’s a Raspberry Pi image to do almost anything now. This project from [Kazade] uses one to mimic a dial-up connection for a Dreamcast so you can connect with other people still playing Quake 20 years later. It’s essentially a network bridge, but you will need some extra hardware because phone lines use a high voltage line that you’ll have to make (or buy) a solution for. Once all the hardware is set up and working, you’ll need to make a few software configuration changes, but it’s a very straightforward project.
Granted, there have been ways of playing Dreamcast games online before, but this new method really streamlines the process and makes it as simple as possible. The Dreamcast was a great system, and there’s an argument to be made that the only reason it wasn’t more popular was that it was just slightly too far ahead of its time.
Thanks to [Rusty] for the tip!
Access to fast and affordable internet is a big issue in the USA, even in a major metropolis such as New York City. Amidst a cartel of ISPs who simply will not deliver, a group of NYC inhabitants first took it upon themselves to ease this situation by setting up their own mesh-based internet connections way back in 2013. Now they will be installing a new Supernode to take the installation base far beyond the current 300 buildings serviced.
As a community project, NYC Mesh is run as a non-profit organization, with its community members supporting the effort through donations, along with partnerships with businesses. Its router hardware consists out of off-the-shelf equipment (with a focus on the Ubiquiti NanoStation NSM5) that get flashed with custom firmware containing the mesh routing functionality.
As this article by Vice mentions, NYC Mesh is one of 750 community-led broadband projects in the US. Many of those use more traditional fixed wiring with distribution lines, but NYC Mesh focuses fully on wireless (WiFi) links with wireless mesh networking. This has the obvious benefit that given enough bandwidth on the Supernodes that hook into the Internet exchange points (IXP) and an efficient mesh routing protocol, it’s quick and easy to hook up new clients and expand the network.
The obvious downsides of using WiFi and RF in general is that they are not immune to outside influences, such as weather (rain), RF interference (including from other WiFi stations) and of course fairly limited range if there’s no direct line of sight. In a densely populated city such as NYC this is not much of an issue, with short hops between roof tops.
When it comes to SpaceX, or perhaps more accurately its somewhat eccentric founder and CEO Elon Musk, it can be difficult to separate fact from fiction. For as many incredible successes SpaceX has had, there’s an equal number of projects or ideas which get quietly delayed or shelved entirely once it becomes clear the technical challenges are greater than anticipated. There’s also Elon’s particular brand of humor to contend with; most people assumed his claim that the first Falcon Heavy payload would be his own personal Tesla Roadster was a joke until he Tweeted the first shots of it being installed inside the rocket’s fairing.
So a few years ago when Elon first mentioned Starlink, SpaceX’s plan for providing worldwide high-speed Internet access via a mega-constellation of as many as 12,000 individual satellites, it’s no surprise that many met the claims with a healthy dose of skepticism. The profitability of Starlink was intrinsically linked to SpaceX’s ability to substantially lower the cost of getting to orbit through reusable launch vehicles, a capability the company had yet to successfully demonstrate. It seemed like a classic cart before the horse scenario.
But today, not only has SpaceX begun regularly reusing the latest version of their Falcon 9 rocket, but Starlink satellites will soon be in orbit around the Earth. They’re early prototypes that aren’t as capable as the final production versions, and with only 60 of them on the first launch it’s still a far cry from thousands of satellites which would be required for the system to reach operational status, but there’s no question they’re real.
During a media call on May 15th, Elon Musk let slip more technical information about the Starlink satellites than we’ve ever had before, giving us the first solid details on the satellites themselves, what the company’s goals are, and even a rough idea when the network might become operational.
Continue reading “Everything We Know About SpaceX’s Starlink Network”
Continue reading “It’s The Web, Basically”
As computer networks get bigger, it becomes increasingly hard to keep track of the flow of data over this network. How do you route data, making sure that the data is spread to all parts of the network? You use an algorithm called the spanning tree protocol — just one of the contributions to computer science of a remarkable engineer, Dr. Radia Perlman. But before she created this fundamental Internet protocol, she also worked on LOGO, the first programming language for children, creating a dialect for toddlers.
Continue reading “Spanning The Tree : Dr Radia Perlman & Untangling Networks”
When moving into a new house, it’s important to arrange for the connection of basic utilities. Electricity, water, and gas are simple enough, and then it’s generally fairly easy to set up a connection to an ISP for your internet connection. A router plugs into a phone line, or maybe a fiber connection and lovely packets start flowing out of the wall. But if you’re connected to the internet through an ISP, how is the ISP connected? [Kenneth] answers this in the form of an amusing tale.
It was during the purchase of data centre rack space that [Kenneth]’s challenge was laid down by a friend. Rather then simply rely on the connection provided by the data centre, they would instead rely on forging their own connection to the ‘net, essentially becoming their own Internet Service Provider.
This is known as creating an Autonomous System. To do this involves several challenges, the first of which is understanding just how things work at this level of networking. [Kenneth] explains the vagaries of the Border Gateway Protocol, and why its neccessary to secure your own address space. There’s also an amusing discussion on the routing hardware required for such a feat and why [Kenneth]’s setup may fall over within the next two years or so.
It’s not for the faint hearted, and takes a fair bit of paperwork, but [Kenneth] has provided an excellent guide to the process if you really, really just need to own your own corner of the internet. That said, there are other networking tricks to cut your teeth on if you’d like a simpler challenge, like tunneling IP over ICMP.
By now, most of us know the perks of using a VPN: they make private one’s online activity (at least from your ISP’s point of view, probably), and they can also make it appear as if you are in a different locale than you physically are. This is especially important for trying to watch events such as the Olympics which might air different things at different times in different countries. It’s also starting to be an issue with services like Netflix which allow content in some areas but not others.
While VPNs can help solve this problem, it can be tedious to set them up for specific purposes like this if you have to do it often. Luckily, [clashtherage] has created a router with a Raspberry Pi that takes care of all of the complicated VPN routing automatically. In much the same way that another RPi router we’ve seen eliminates ads from all of your internet traffic, this one takes all of your traffic and sends it to a locale of your choosing. (In theory one could use both at the same time.)
Obviously this creates issues for Netflix as a company, and indeed a number of services (like craigslist, for example) are starting to block access to their sites if they detect that a VPN is being used. Of course, this only leads to an arms race of VPNs being blocked, and them finding ways around the obstacles, and on and on. If only IPv6 was finally implemented, we might have a solution for all of these issues.