Efforts to Provide Reliable and Secure Connection Services

Asahi Net is taking the following efforts to provide the members with great internet experience and assurance in all of Asahi Net's internet connection services.

1. Efforts to provide a reliable service to our Members

In the light of diversifying use of the internet, there are cases where the network speed decreases significantly due to a small proportion of Members occupying most of the capacity that communication facilities have. To ensure communication quality and fair allocation of the network, some Members who send or receive a large amount of data during a set period of time may have limits placed on communication speed.

Implemented measures

  • In an event where communication speed decreases in facilities that contain the network lines provided to our Members, we will automatically restrict communication speed of the Member using a large amount of data traffic on a temporal basis, to the same level as that of other Members, and restore communication quality to enable other Members to use a reliable service.
    Once the decrease in communication speed is recovered, the speed restriction will be released.
  • Restriction on communication may be placed when Members are using file-sharing software utilizing P2P technology (typical software such as Winny or Share.) Restriction on communication is not placed when Members are using P2P multiplayer games.

2. Efforts to provide a secured internet connection service to our Members

Asahi Net has implemented outbound port 25 blocking, which blocks the route of unsolicited email.

Implementation of outbound port 25 blocking by each ISP prevents unintentional sending of unsolicited email triggered by virus, etc. and at the same time, reduces receiving of unsolicited email.

For details, please refer to the following webpage.

Asahi Net has implemented blocking of UDP port 53 of the IP addresses used by our Members.

Blocking access to Members' IP addresses from external networks prevents the improper use of internet services caused by DDoS attacks.

For details, please refer to the following webpage.

3. Efforts to provide safe and secured environments for IoT devices

Asahi Net may alert Members.

In the event the Company obtains the following information from a reliable third party, and when there is a concrete probability that service provision of the Company will be hindered if the Company does not alert and request the Member to take measures in advance, the Company, to the extent necessary, may collate the said information with Members' information, transmission history, etc., that the Company holds, identifies the Member who is using the device in question, and alerts the Member by sending email, documents and the like.

  1. 1.The IP address and time stamp information of a device which is recognized that it has not taken enough measures to ensure cyber security.
  2. 2.The IP address, port number or time stamp information of a device which has a high possibility of malware infection.

Supplementary Provision
This policy shall be effective as of May 19, 2016.
The revised policy shall be effective as of August 10, 2019.
The revised policy shall be effective as of January 18, 2023.
The revised policy shall be effective as of April 1, 2024.

  • *This is a translation of the original Efforts to Provide Reliable and Secure Connection Services in Japanese. If there is any conflict between the original and the translation, the original shall prevail.

Asahi Net, Inc.

Back to top of the page