School of Science VPN Service
Information Technology Team > School of Science VPN Service
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1 Overview
1.1 Purpose
The School of Science VPN service allows secure connections from external networks to departmental or laboratory networks. Directly exposing internal servers or printers to external networks is not recommended for security reasons, so external access to internal networks is generally blocked. By using this service, users can access file servers and printers from external networks as if they were directly connected to the departmental or laboratory network.
Access to university-wide contracted electronic journals via departmental VPN is not permitted. Please use the following university-wide service instead:
1.2 Types of Service
The School of Science VPN service provides:
- **VPN connection using client software**
- **L2TP VPN connection using OS built-in features**
Client software-based VPN allows administrators to manage connected devices similarly to wired LAN, while L2TP VPN is supported by most operating systems and can be configured easily by users. See the table below for details:
| VPN using client software | L2TP VPN connection | |
|---|---|---|
| Preparation by network administrators before use | Not required | Requires IP address allocation for L2TP VPN service |
| Device management method | Managed by VPN MAC address (same as wired LAN) | No per-device management (follow departmental/lab rules) |
| Supported environments | Windows | Windows, macOS, iOS (iPad, iPhone) |
2 Eligible Users
- Faculty, staff, and students with a UTokyo Account who are authorized by their departmental or laboratory network administrator.
3 Supported Environments
- VPN using client software:
- Windows
- L2TP VPN connection:
- Windows, macOS, iOS (iPad, iPhone)
4 Usage Procedure
To connect to the School of Science VPN service, you need a **SoS VPN account** and **SoS VPN password**. Check your network information on the following page:
4.1 Notes
Access to the above page requires UTokyo Account authentication. If you cannot access it, confirm your UTokyo Account service registration here:
5 L2TP VPN Setup
For detailed setup instructions per device, refer to:
5.1 Required Settings
- Server: xxx.adm.s.u-tokyo.ac.jp
- Pre-shared key:
- Account: SoS VPN account
- Password: SoS VPN password
- Authentication: PAP
6 VPN Using Client Software
6.1 Download Client Software
This VPN service uses **SoftEther VPN**. Download and install the client software from:
Select **SoftEther VPN Client** in the component menu and choose your OS. Linux and macOS options are available, but these require command-line usage and manual network configuration. macOS instructions are not included in the official manual.
Manual and setup guide:
6.2 Required Settings
- Hostname: xxx.adm.s.u-tokyo.ac.jp
- Port: 443 (default)
- Virtual HUB name: sos (select from list)
- Authentication type: Password authentication
- Username: SoS VPN account
- Password: SoS VPN password
