They only establish outgoing connections. Onion services don't need open ports because they punch through NAT. This could happen if you are in a university campus, an office, an airport, or pretty much anywhere. Is your network filtered and you can't open ports on your firewall? This is like getting strong SSL/HTTPS for free. Onion service traffic is encrypted from the client to the onion host. Usually, reaching a website does not mean that a man-in-the-middle did not reroute to some other location (e.g.

No impersonation is possible, which is generally not the case. When a user visits a particular onion, they know that the content they are seeing can only come from that particular onion. Onion services are an overlay network on top of TCP/IP, so in some sense IP addresses are not even meaningful to Onion Services: they are not even used in the protocol. Location hidingĪn Onion Service's IP address is protected. Onion services offer various privacy and security benefits to their users. Running an Onion Service gives your users all the security of HTTPS with the added privacy benefits of Tor Browser. Onion services are services that can only be accessed over Tor.

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