Shaochun Wang wrote: > The stupid net administrator of my institute blocked all UDP datagram > in the firewall. I know that NTP uses UDP to do its work, but is it > possible to let ntpd use TCP? > <snip>
No, it's not possible for NTP to use TCP. UDP was chosen for good reason; it's a connectionless protocol, does not guarantee delivery and does no error correction! These features mean that an NTP packet that you receive was delivered to you without retransmissions. This is important because the NTP algorithms use the transmit and receive time stamps to determine delay; if you got a new packet with old data in it it would break ntpd! _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
