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Use of ECCS From Off-campus

Educational Campus-wide Computing System (ECCS)


Contents


ECCS2021 provides a remote access environment and SSH server to access the ECCS environment from off-campus.

Both the Remote Access Environment and SSH server operate independently. It is not necessary set up one to be able to use the other. It is possible to be use only one system at a time.

Please note that if you access servers other than the ECCS using the Remote Access Environment and SSH server, it will not be possible to visit webpages that are restricted to on-campus access. This is the result of you trying access sites using requiring specific on-campus IP addresses with different IP addresses used by other servers.

Remote Access Environment

Preparation

Connection

Important Notice

SSH Server

There are three servers that you can log in with SSH from off-campus and use OS X environment. The host names are as follows.

Preparation

Only public key authentication can be used to log in. Create a pair of public key and private key in advance on the computer that you wish to connect. The compatible public keys are RSA2(20148bit or higher), ECDSAECDSA(higher than 256bit).

Next, Save the public key as a file with the appropriate name ($HOME/.ssh/authorized_keys) in the ECCS home directory. You can also upload the public key from Upload your SSH key for SSH server in the ECCS portal or using WebDAV environment in the left menu of the ECCS top page.

Connection

Connect to the SSH host server mentioned above using an appropriate SSH client. For example, if you are going to connect to ssh01.ecc.u-tokyo.ac.jo using SSH with a Linux or Mac OS X terminal software, enter the following.

 ssh ECCS username@ssh01.ecc.u-tokyo.ac.jp

Please refer to the manual on the SSH client for how to specify usernames and host names.

When you connect to the server for the first time, the fingerprint of the public key on the server will be displayed. Please make sure that this fingerprint matches with one of fingerprints in the link destination.

Please select a server with the least users as many users will tend to use it at the same time.

How to Check Your Home Directory in the Windows Environment

Only the home directory in the Mac environment will be available at login. Type in the following commands when you check the home directory (files) in the Windows environment.

 Windows_mount .sh

The home directory in the Windows environment will be mounted under "~/mnt" with read/write permissions. This function allows the users to exchange files between the Mac environment and the Windows environment without using the WebDAV server.

Important Notice