ssh_config (Source)

Host login*.rc
HostName %h.colorado.edu

Host *.rc
HostName %h.int.colorado.edu


Match host=*.rc.colorado.edu,*.rc.int.colorado.edu
User joan5896


# Internal RC hosts are running an old version of OpenSSH
Match host=*.rc.int.colorado.edu
MACs hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96


Match host=login.rc.colorado.edu
ControlMaster auto
ControlPath ~/.ssh/.socket_%h_%p_%r
ControlPersist 4h


Match host=*.rc.int.colorado.edu
ProxyCommand ssh -W %h:%p login.rc.colorado.edu


# Secure defaults

Host *

# https://wiki.mozilla.org/Security/Guidelines/OpenSSH#Modern
HostKeyAlgorithms ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-ed25519,ssh-rsa,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256
Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com
KexAlgorithms curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1

# Protect remote servers if my credentials are ever compromised
HashKnownHosts yes

# http://www.openssh.com/txt/release-7.1p2
UseRoaming no