Figure 2: Connection Reversal (after [ 6]): Node 𝑌 connects to therelay server (1.) and asks it to relay a connection to node 𝑋 (2.). Afterexchanging their respective addresses in the CONNECT messageof the DCUtR protocol, 𝑋 first dials 𝑌 directly (3.). This connectionattempt only succeeds if 𝑌 is a public node
= Connection Reversal connection attempt requires public node