| 摘要 |
<p>A network authentication method, client end requiring authentication method, client end and device, the method includes: receiving a SYN data transmitted from the client end, the SYN data involves a SEQ1 and a network parameter (S11); transmitting a SYN_ACK data responding to the SYN data to the client end, the SYN_ACK data involves an ACK2, the value of the ACK2 is the value of function conversion from the network parameter of the SYN data; receiving a RST data transmitted by the client end responding to the SYN_ACK data, the RST data involves a sequence number SEQ3 or an acknowledgement number ACK3, and the value of the SEQ3 or the ACK3 is the same as the value of the ACK2, the RST data involves the same network parameter as the SYN data (S13); performing the function conversion according to the network parameter of the RST data to obtain the checking value CHK; if the CHK is matching with the SEQ3 or the ACK3, the authentication for the client end is passed (S14).</p> |
