Internet-Security.com TCP port 8545 details

TCP port 8545 is the default HTTP JSON‑RPC port for Ethereum execution clients: geth, Nethermind, Hyperledger Besu, Erigon, and the legacy Parity/OpenEthereum.
EVM-compatible chains reuse it on their nodes, including Binance Smart Chain (geth-based), Polygon’s Bor (execution client), Ethereum Classic clients, and ConsenSys Quorum.
Local developer blockchains bind to 8545 by default: Hardhat Network, Foundry’s anvil, and Ganache CLI (the Ganache GUI uses 7545).
Many production/self-hosted Ethereum nodes keep RPC on 8545 unless reconfigured, so wallets and SDKs can connect to localhost:8545.
This port is associated with hacking incidents: attackers scan for publicly exposed 8545 JSON‑RPC endpoints and abuse unsafe methods or unlocked accounts to submit unauthorized transactions and drain funds.

TCP 8545