GPS positioning works based on how much time the radio signal takes from the source satellite to the destination, your device. As you may know radio signals speed in the void is the speed of the light (which is also an electromagnetic wave, just at different frequencies). Speed of the light is 300’000 km/s (more […]
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OPNsense – create pftable for google networks
I tried in several way to enable firewall rules to google addresses like smtp, apis, captcha and so on. In OPNsense you can add an host alias inserting the FQDN instead of the IP address. Then you can schedule a reload of the alias every 5 minutes or so. Most of the times it works […]
Continue readingMore TagGet rid of bufferbloat with SQM
Let’s start from a bit far…TCP/IP works so well, since decades ago, with links in the order of kbits/s, until nowadays with 10Gbits/s and more. Of course there’s been some modifications since the beginnings, but the concept is the same, and almost unchanged. The fact is there’s no way for an endpoint to know the […]
Continue readingMore TagOpenWRT – reload conf when RADAR is detected
OpenWRT is a Linux operating system targeting embedded devices, main targets are Wireless Routers, like the name suggests ( https://openwrt.org/ ). The first issue I had was with the configuration of the 5GHz channel, so I want to share this. Use of radio frequencies is strictly regulated, every county has its own law, but usually […]
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