Ctrl.blog

Network routers are neither appliances nor magic; they’re computers and computers require ongoing maintenance and security patching. But whose job is that?

Websites are port-scanning your localhost. Here’s how to stop random websites from knowing what services are running on your device.

Peer-to-peer apps forget the IP addresses it communicated with in the last session and rely on peer-discovery all the time. Caching can make them more robust.

A quick tutorial for migrating from FirewallD and getting started with the Uncomplicated Firewall (UFW). Both are front ends for Linux’s iptables firewall.

VPS service providers have data centers located all over the world. You need managed anycast IP-addresses to direct users to the nearest VPS location.

Tutorial for quieting Multicast DNS using various firewall front-ends for Linux’s iptables firewall such as FirewallD and Ubuntu’s UFW.

Russia to test disconnecting from the global Internet. Peer-to-peer distributed internet alternatives won’t survive after the Runet cutoff.

Two competing proxy-anonymity proxy services — e.g. Tor Onion and I2P — can be used at the same time when set up with a PAC file.

An over-aggressive power-savings system causes Android devices configured with a PAC proxy configuration file to lose networking.

Ctrl blog was inaccessible in Turkey for five days as the country inadvertently blocked the BunnyCDN content delivery network.

InvizBox wants some of that sweet VPN subscription service revenue. Abandons Tor Onion network anonymity in favor of a more lucrative venture.

The French VPS provider Scaleway doesn’t deliver promised features like IPv6, reverse DNS, or Linux distribution availability.