Bitcoin Testnet P2P
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TCP — Other
Port Overview
What is Port 18333?
Used for Bitcoin testnet peer-to-peer network communication between nodes. Testnet is used by developers to test Bitcoin transactions without using real BTC. The mainnet P2P port is 8333; this port mirrors that function for the test environment.
Security Considerations
Port 18333 (Bitcoin Testnet P2P) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.