Subsections


8.4 Network connection

The KTnet (NAOJ network) and the internet are available in the NAOJ Mitaka campus. Accesses from the KTnet to the internet is permitted, but in contrast, accesses from the internet to the KTnet is not permitted for a security measure. This section introduces a usage of the KTnet and the internet on the open-use rooms.


8.4.1 KTnet (NAOJ network)

The KTnet (NAOJ network) is a isolated network, which consists of networks in the Mitaka campus and each observatory. If you are an NAOJ staff, you can connect to the KTnet. If you are an visitor, you can use the internet (see Section 8.4.2) while you cannot connect to the KTnet.

Connection to the KTnet

NAOJ staffs can apply a registration of a static IP address in the KTnet. If you apply for the KTnet VPN service, you can access the KTnet from the internet. Please refer to a website of the NAOJ NETWORK SERVICE HELP CENTER (https://nethelp.mtk.nao.ac.jp/contents/) for details. Note that this web site is not accessible from the internet.

Connection to the interactive data analysis servers

Since all of the MDAS machines are on the KTnet, you have to connect to the KTnet before access the interactive data analysis servers. In the open-use rooms, remote login terminal computers and terminal workstations are on the KTnet, so both computers can access the interactive data analysis servers.

Connection to the network printers

Sinece network printers in the open-use rooms are on the KTnet, you have to connect to the KTnet before using the printers. In the open-use rooms, shared PCs, remote login terminal computers, and terminal workstations are on the KTnet, so these computers can output data to the printers. We prohibit outputs from personal computers to the Large-format printers. If you use the large-format printers, please output from the shared PCs.


8.4.2 Internet

In the Mitaka campus, visitors and NAOJ staffs can use the internet. Wired LAN is available in the open-use rooms, and wireless LAN is available across the Mitaka campus.

Wired LAN

In the South building open-use rooms and Subaru building open-use room, network hubs are provided for connecting to the internet. Locations of the hubs in the open-use rooms are as follows.
Table 8.8: Locations of the hubs in the open-use rooms
Room Place
South building open-use room A On the working desk
Subaru open-use room On the working desk, Near the sbt03, Near the sbt07

Wireless LAN

In the South building open-room and Subaru building open-use room, the internet is available through the wireless LAN (Wi-Fi). The SSID of the wi-fi is "naoj-open". In order to know the password, please contact a NAOJ staff or see the digital information signage in each building. The password is updated once a week.

Connection to the interactive data analysis servers from internet

Any machines on the internet cannot connect to the interactive data analysis servers since connection from the internet to the NAOJ network is not permitted. However, if you apply for the ADC VPN service, you can only access the interactive data analysis servers through the internet (cannot access other machines on the NAOJ network). Please refer to Section 3.2 for the application.

Connection to the network printers

Any machine on the internet cannot connect to the network printers since connection from the internet to the NAOJ network is not permitted. Please output from the shared PCs.

ADC
2019-12-03