So if each step is partially encrypted, a compromise of any device in the route will still defeat network surveillance, and because all traffic at the entry point to Tor is encrypted it’s safe to browse anonymously when using, let’s say, a conference wi-fi. Since each step is encrypted, these layers of encryption can be considered like a network with layers like an onion. Each of those computers or routers is only aware of the node in front of or behind it in the communication route and encrypting the next node sent. Tor routes your data through a bunch of nodes. You install software, available at or a browser extension. Tor is simple to use and yet incredibly complicated under the hood. I'm not a huge Tor user but for the people who need to be sure non-Tor traffic can't go out, this is a simple setup to make.Tor, short for The Onion Router, is a tool to anonymize your web traffic. If you prefer using i2p only to reach external services, replace _tor by _i2p or _i2pd in the pf.conf rule, depending on which implementation you used. ![]() The only issue I can imagine right now is connecting on a network with a captive portal to reach the Internet, you would have to disable the PF rule (or entire PF) at the risk of some programs leaking data. Tor project documentation Potential issues § I recommend reading Tor documentation to understand how it works. The point of this setup is to block leaking programs and only allow Tor to reach the Internet, then it's up to you to use Tor wisely. The Tor Browser (modified Firefox including Tor and privacy settings) can be fully trusted to only share/send what is required and not more. ![]() You shouldn't use Tor for anything, this may leak your IP address depending on the software used, it may not be built with privacy in mind. This still mean you have 1/2000 chance to have the same name upon reboot, if you prefer more entropy you can make a script generating a long random string. The script will take a random name out of the 2000+ entries of the airport list (every airport in the list has been visited by OpenBSD developed before it is added). Grep -v ^# /usr/share/misc/airport | cut -d ':' -f 1 | sort -R | head -n 1 > /etc/myname To do so, you could run an /etc/rc.local with this script: Please consider that if you are using DHCP to obtain an IP on the network the hostname of your system is shared and also its MAC address.Īs for the MAC address, you can use "lladdr random" in your interface configuration file to have a new random MAC address on every boot.Īs for the hostname, I didn't test it but it should work, rewrite your /etc/myname file with a new value at each boot, meaning the next boot you will have a new value. Privacy considerations in the local area network § Here are the commands to type as root to install tor and reload PF:Ĭonfigure your programs to use the proxy SOCKS5 localhost:9050, if you need to reach a remote server / service of yours, you will need to have a server running tor and define HiddenServices to access them through Tor. ![]() If you forgot to save your pf.conf file, the default file is available in /etc/examples/pf.conf if you want to go back to a standard PF configuration. # block IN traffic and allow response to our OUT requests Modify /etc/pf.conf to make it look like the following: The setup is simple and consists at installing Tor, running the service and configure the firewall to block every requests that doesn't come from the user _tor used by Tor daemon. If for some reasons you want to block all your traffic except traffic going through Tor, here is how to proceed on OpenBSD. Comments on Fediverse/Mastodon Introduction §
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