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Relays have more overhead than just TLS crypto operations. For example the scheduler uses a significant amount of CPU usage. There are also many memory copies and allocations involved in moving cells around in Tor between buffers. Your benchmark uses AES-128, but Tor relay connections generally use AES-256 which should be slower than your AES-128 results. ...


Is there a way to make a non-exit relay more secure?


I have run a Tor relay for fifteen years, and I am seeing a similar issue with my relay. For privacy reasons, I apologize in advance for not listing my relay's nickname. According to Tor Metrics, on 2020-02-26 both my relay and your relay began receiving a Consensus Weight of 20 (Additional Flag: Unmeasured). Both of our relays are non-exit, middle-nodes ...


Several issues were present: 1) Firewall was too restrictive preventing connections to a necessary port (53, for local dns resolving) 2) Torrc misconfiguration. Not entirely sure which option. 3) Network interface misconfiguration, preventing connections to the IP for was set to use (server had 2 ipv4 ips and /64 block of ipv6 4) Bad cached certs Hope ...

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