- What data does Tor collect?
- How many Tor nodes exist?
- How many relays does Tor have?
- What is a Tor directory server?
What data does Tor collect?
Tor relays and bridges collect aggregated statistics about their usage including bandwidth and connecting clients per country.
How many Tor nodes exist?
Tor's architecture for deciding the consensus relies on a small number of directory authority nodes voting on current network parameters. Currently, there are eight directory authority nodes, and their health is publicly monitored. The IP addresses of the authority nodes are hard coded into each Tor client.
How many relays does Tor have?
There are three kinds of relays that you can run in order to help the Tor network: middle relays, exit relays, and bridges. For greater security, all Tor traffic passes through at least three relays before it reaches its destination.
What is a Tor directory server?
The sole purpose of directory servers is to maintain information on the status of each node on the Tor network. The directory servers track when nodes appear and disappear, helping to ensure that the network adds new nodes promptly, and quickly drops unhealthy nodes from the network.