Now start every message with a header explaining how much data the message will contain, and a checksum.
现在开始每条消息头解释消息将包含多少数据，和一个校验和。
But IP protocol is not secure, there is only a 16 bits checksum in IP header to validate data integrity.
然而IP协议本身是不安全的，它只用16比特的校验和来验证IP报文头的完整性。
But IP protocol is not secure, there is only a 16 bits checksum in IP header to validate data integrity.
然而IP协议本身是不安全的，它只用16比特的校验和来验证IP报文头的完整性。
应用推荐