26
RSFTP
Medium 风险TCP/UDP — Email
端口概览
端口号
26
服务名称
RSFTP
传输协议
TCP/UDP
类别
Email
安全风险
Medium
端口范围
知名端口 (0-1023)
什么是端口 26?
Port 26 is unassigned by IANA but is commonly used as an alternate SMTP port by some ISPs and hosting providers to bypass port 25 blocking. Also occasionally referred to as RSFTP.
TCP/UDP
Email
安全注意事项
端口26（RSFTP）被归类为中等风险。虽然此服务通常会暴露，但请在可用时考虑使用加密替代方案。
建议：保持服务更新。监控日志以发现异常活动。