QuestionQ41

Threat Intelligence in Incident Response

A system was suspected of being used by a cybercriminal to carry out anti-social activity through the Tor browser. James reviewed the active network connections that Tor established using specific ports.

Which of the following port numbers does Tor use to establish a connection through Tor nodes?

  • A 9150/9151
  • B 31/456
  • C 1026/64666
  • D 3024/4092
Explanation

Tor Browser uses local port 9150 for its SOCKS proxy listener and port 9151 for its control interface. Tor Project troubleshooting documentation shows Tor Browser opening a SOCKS listener on 127.0.0.1:9150; the standard Tor Browser configuration also uses 9151 as its control port.

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