Is port 8545 (Ethereum JSON-RPC) dangerous?

Port 8545 is classified as critical risk and should not be exposed to the public internet. It transmits data without encryption, making it vulnerable to eavesdropping and credential theft.

Should port 8545 be open on my firewall?

No, port 8545 should not be open to the public internet. Block it at the firewall and use encrypted alternatives such as SSH, SFTP, or HTTPS instead.

What transport protocol does port 8545 use?

Port 8545 (Ethereum JSON-RPC) uses the TCP transport protocol and falls under the Other category.

:8545 (TCP)

Ethereum JSON-RPC

Critical 风险

TCP — Other

端口概览

端口号 8545

服务名称 Ethereum JSON-RPC

传输协议 TCP

类别 Other

安全风险 Critical

端口范围已注册 (1024-49151)

什么是端口 8545?

Port 8545 is the default JSON-RPC port for Ethereum nodes (go-ethereum/geth and others) for interacting with the Ethereum blockchain. DApps, wallets, and Web3 developers use this port to query blockchain state and submit transactions. Publicly exposing this port without authentication has resulted in theft of Ethereum from hot wallets.

TCP Other 常用

安全注意事项

端口8545（Ethereum JSON-RPC）被归类为严重风险。此端口不应暴露在公网上。该服务在未加密的情况下传输数据，容易受到窃听、凭据窃取和中间人攻击。

建议：在防火墙处封锁此端口。改用加密替代方案（SSH、SFTP、HTTPS）。

Ethereum JSON-RPC

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端口概览

什么是端口 8545?

安全注意事项

相关端口 — Other

相关术语