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Introduction

Users who have accounts on the shared computing resources (such as NOTS, PO, DAVinCI) but are not affiliated with Rice (guest accounts) will likely not have SSH or VPN access to the Rice network.  We provide a special SSH Gateway that provides a means of accessing the shared computing resources from off-campus. The remainder of this document will describe the current access policy that is being enforced on the SSH Gateway.

SSH Access In Bound Only

In order to login to the SSH Gateway, use SSH to login to the host gw.crc.rice.edu. Once there, you can use SSH to login to any of the shared computing resources. It will be a two-step process to login to a shared computing resource:

1.  SSH login to gw.crc.rice.edu from off-campus.

2.  SSH login to the shared computing resources (such as NOTS, PO, BlueBioU, DAVinCI) from gw.crc.rice.edu.

Once you are logged into the gateway, you will not be able to use SSH to login to any system other than a shared computing resource. SSH access is restricted to inbound connections to the gateway. Outbound connections from the SSH Gateway to systems other than the shared computing resouces are not allowed. You can not login to an off-campus system from the gateway, for example.

Data Transfers and Quotas

All accounts on the gateway have a quota of 250MB enforced on home directories. If you need to transfer data to a shared computing resource through the gateway, it must be staged in the /tmp directory which does not have quotas. The command used to copy a file to this directory with SSH would look similar to:

Data stored in the /tmp directory is not permanent

The /tmp directory resides on a virtual disk.  When the system is rebooted, all data on /tmp will be deleted automatically.  So please use this space as temporary storage for transferring data to the shared computing resources.  Delete your data from /tmp once the transfer is complete.

If you have data on the gateway that you need to retrieve from an off-campus system, then execute an SSH command on the off-campus system similar to the following:

Information on large data transfers

For large data sets where this two-step transfer would be inconvenient, please see our large data set transfer FAQ.

Getting Help

To get help with the SSH Gateway, please contact us .