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PuTTY‘s pageant handles the whole login session. See above.

ssh Authentication Forwarding (xbio)

For people who ssh into who ssh into one computer such as a cluster head nodeas xbio, and from there to additional computers another computer such as compute nodes, ssh authentication lilac or luna, authentication forwarding enables the intermediate intermediary computer (xbio) to connect back to an ssh agent ssh-agent on the original client , providing (Mac or PC) for authentication to the remote server (lilac). For example , I ssh from teriyaki to lunaI ssh from teriyaki to xbio, and then to s01from xbio to lilac. Even though I don’t keep my private key on lunaon lilac, teriyaki can authenticate my connection to s01 through luna, so no passphrase is required, and to lilac through xbio so I don’t need a copy of my private key on luna.

For Mac: To enable authentication forwarding, use “ForwardAgent yes” in ~/.ssh/config on your workstation, or use “ssh -“ssh A“. Add your private key passphrase to the Apple Keychain with  

For Windows: Please see the Windows section below.

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Read the manual pages on your workstation or a server: man  man ssh. If you have any issues, please contact hpc-request@cbio.mskcc.org

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