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8333,18333,38333,18444 - Pentesting Bitcoin

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Basic Information

  • The port 8333 is used by Bitcoin nodes in the mainnet to communicate between them.

  • The port 18333 is used Bitcoin nodes in the testnet to communicate between them.

  • The port 38333 is used Bitcoin nodes in the signet to communicate between them.

  • The port 18444 is used Bitcoin nodes in the regtest (local) to communicate between them.

Default port: 8333, 18333, 38333, 18444

PORT      STATE SERVICE
8333/tcp open  bitcoin

Shodan

  • port:8333 bitcoin

  • User-Agent: /Satoshi

Enumeration

Bitcoin nodes will give you some information if they think that you are another valid bitcoin node. Nmap have some script to extract this information:

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