Edward, > I want to know what's meaning of 'S','.','P','F'?
You should learn a bit about TCP protocol. S is for SYN (synchronize) P is for PUSH F is for FIN . is for nothing Pakets are: 3 way hand shake initiate TCP connection client > server SYN sever > client SYN ACK client > server ACK client > server send data server > client ACK and send data client > server ACK tTermination client > server FIN server > client ACK server > cient FIN client > server ACK ACk means acknowledge. Olivier _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"