faq-remote-access-to-linux-computers.md
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@@ -5,16 +5,24 @@ as different locations on-campus).
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## ssh
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-ssh can be used for remote terminal access to your laboratory computers from
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+ssh can be used for remote command-line access to your laboratory computers from
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home and other sites, as well as for running graphical programs (depending on
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your local operating system).
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-SSH gateway is an externally accessible computer that can be accessed by ssh (see table below); once connected to the gateway you can use ssh to connect to other workstations in your laboratory.
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+An SSH gateway is an externally accessible computer that can be accessed by ssh (see table below); once connected to the gateway you can use ssh to connect to other workstations in your laboratory.
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Data processing should not be done on the gateway, for computational jobs
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connect through gateway to another workstation and run your jobs there (for
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exceptions see Table I).
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+Currently we have two SSH gateways:
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+
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+* crystal.harvard.edu
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+* crystal2.sbgrid.org
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+
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+crystal.harvard.edu is currently for use for legacy accounts.
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+crystal2.sbgrid.org is for use with `new` accounts or accounts transferred to our new LDAP authentication system. You should only use crystal2.sbgrid.org if you have told to do so by SBGrid staff.
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+
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Example syntax for connecting to SSH gateway for Harvard Medical School
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groups:
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* GUI (slower network connection): 
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-```ssh -Y -C username@crystal.harvard.edu;```
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+```ssh -Y -C username@crystal2.sbgrid.org;```
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```ssh -Y -C abacus;``` (replace abacus with the name of your workstation.)
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