VPN

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UTAPwiki/計算機

VPN setting †

Information by the School of Science: http://jimubu.adm.s.u-tokyo.ac.jp/public/index.php/VPN_connection_service

Linux †

Background †

The information by the School of Science is outdated/wrong.
"Seems there is no easy way anymore to establish a L2tp VPN connection since OpenSwan has been deprecated and removed in Ubuntu 14.10". However: "A PPA exists now for network-manager-l2tp"
(https://askubuntu.com/questions/617785/how-to-connect-to-l2tp-over-ipsec-vpn)

Setup †

(Tested with Ubuntu 20.04.2 LTS on ThinkPad, September 2022)
1. Install the network manager:

• sudo apt-get install network-manager-l2tp
• sudo apt-get install network-manager-l2tp-gnome

2. From the "Network" settings, add a new VPN:

• Select "Layer 2 Tunneling Protocol (L2TP)", see picture.

3. Fill out the "Identity" (see picture):

• Gateway: vpn.adm.s.u-tokyo.ac.jp
• Type: Password
• User name: your (10-digit) UTokyo user ID
• Password: your School of Science Password
• If you are asked for a pre-shared key (PSK) or shared secret: 8bARDjEggGTB

4. Fill out the "IPsec settings"

• <Tick Enable IPsec tunnel to L2TP host>
• Pre-shared key: 8bARDjEggGTB
• Phase1 Algorithms: aes256-sha1-modp1536
• Phase2 Algorithms: 3des-sha1-modp1536

OSX †

TBD

Windows †

TBD