Enable SSH agent forwarding, and use your uploaded SSH key to log into one of the gateways:

GroupHost

STAR

Special interactive nodes only accessible to selected users: starprod0[1-2]

(SL7: rcas600[1-4]) 

General purpose interactive: starsub0[1-7]

(SL7: rcas60[05-16])

PHENIX 

General purpose interactive: phnxuser0[1-4]

(SL7: rcas206[1-8])

SPHENIX 

General purpose interactive: sphnxuser0[1-8]

Development host: sphnxdev01 

Central job submission: sphnxprod0[1-4]

ATLAS T3 

General purpose interactive: attsub0[1-8]

EIC 

General purpose interactive: eicsub0[1-2]

DUNE 

General purpose interactive: dunesub0[1-2]

Astro 

General purpose interactive: astrosub0[1-2]

General interactive
 (Belle II, NPPS, Theory, BRAHMS, etc.) 

General purpose interactive: spoolsub0[1-2]

Example of ~/.ssh/config

Using ProxyJump through the gateway to the ATLAS T3 hosts:

Host attsub*
    User your_username
    Hostname %h.usatlas.bnl.gov
    ProxyJump your_username@ssh.sdcc.bnl.gov