![]() The relay node only knows the IP address of the entry node and the IP address of the exit node, and neither the origin nor the final destination The entry node only knows your IP address, and the IP address of the relay node, but not the final destination of the request Tor achieves this by bouncing your connection through a chain of anonymizing relays, consisting of an entry node, relay node, and exit node: The Tor project attempts to provide a solution to this problem by making it impossible (or, at least, unreasonably difficult) to trace the endpoints of your IP session. At least, that’s the optimist’s view of how that data is used - I’m sure you can think of many examples of how your online usage profiles can be used against you in much more nefarious ways. ![]() ![]() Such profiles are then sold, aggregated with matching profiles collected from other services, and then monetized by ad networks. In any case, odds are that someone somewhere is assembling an online profile on you based on the sites you visit and how much time you spend on each of them. If you’re using a VPN service ( as you should be ), then your IP can be mapped to your VPN provider, and then they are the ones who can map it to your household. If you’re browsing from home, then your IP can be directly mapped to your household. The name “Tor” stands for “The Onion Router” and it is a technology created to combat online tracking and other privacy violations.Įverything you do on the Internet leaves a set of digital footprints in every piece of equipment that your IP packets traverse: all of the switches, routers, load balancers and destination websites log the IP address from which your session originated and the IP address of the internet resource you are accessing (and often its hostname, even when using HTTPS ). You have probably heard about the Tor project before, but just in case you haven’t, here’s a very quick summary. However, if you would like to put it to good use without sacrificing too much of your time or resources, you can turn your old Raspberry Pi into a perfectly functioning Tor relay node. This is not to say that there aren’t cool things you can do with one of these, but between work and other commitments, I just never seem to find the right time for some good old nerding out. After all, unless you’re a robotics enthusiast, you probably don’t have that much use for a computer with a pretty slow processor and 256 megabytes of RAM. This can be changed to be run more frequently, as required.Īt this point, I created a chart in the Sheet so that I could view the data being collected.If you’re anything like me, you probably got yourself a first- or second-generation Raspberry Pi board when they first came out, played with it for a while, but then shelved it and mostly forgot about it. Right now, I'm measuring the speed every 30 minutes at 15, 45 mins past the hour. If all is good, add this to the cron job and sit back: crontab -eġ5,45 * * * * /root/bin/speedtest-ifttt.sh Now, run the file once & see if it creates a Google Sheet and saves details to the sheet /root/bin/speedtest-ifttt.sh Make a directory to save the temperary file: mkdir ~/tmpĪdd execute permission: chmox +x /root/bin/speedtest-ifttt.sh OOTB, OpenWRT doesn't have bash or curl, so install that too: opkg install bash curl ![]() Update log=/tmp/$user/speedtest-csv.log to log=/$user/tmp/speedtest-csv.logĪdd the key to line 82 secret_key="SECRET_KEY" I've saved it at /root/bin/speedtest-ifttt.sh ![]() Next, we need to run the following script. Hosted by Virgin Media (Nottingham) : 20.29 ms Test out the installed package: speedtest-cli Install pip - a packaging manager for Python and the speedtest-cli package from the pip repositories. OpenWRT uses opkg rather than apt-get, so that is used throughout as a replacement. I use an OpenWRT router (running a VPN to add a little bit of privacy), so I could adapt the article to run on the router rather than an attached Raspberry Pi. I recently read Use Raspberry Pi to Measure Broadband Speeds to Hold Your ISP Accountable on Make and realised that this was an excellent candidate for monitoring my somewhat unstable Virgin Media connection. ![]()
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