Abstract: At the present, all seismological observation network systems are developed based on IPv4 protocol. Because IPv4 address is presented exhaustedly, we can't access station data directly from the station-level, and can only access data from the network center. In addition, seismological observation network system now is verifying the user by way of “user name/password”, and doesn't encipher user name and password when transmitting data. It's unsafe. By way of developing seismological observation network system based on IPv6 protocol, we developed new seismological observation system networking protocol under the IPv6 environment, and have accomplished the target of station-level data sharing; the integrity and confidentiality of data have been guaranteed by enciphering methods for real time data; new certificate management and authentication mechanisms have been set up. On the basis of experiment, we developed a transitional technology from IPv4 to IPv6, which provide a good basis for more application of IPv6 technology in seismological observation technology in the future.

Key words: Seismological observation network, IPv6, Linux, Embedded development