ssh_config

Host 192.168.*
    ProxyCommand none

Host 10.*
    ProxyCommand none

Host localhost 127.*
    ProxyCommand none

Host *.intra.rackspace.com
    ProxyCommand none

Host *.cldsrvr.com
    ProxyCommand none

Host lintools
    ProxyCommand none

Host thinlin
    ProxyCommand none

Host cbast*.*.rackspace.com
    ProxyCommand none

Host github.rackspace.com
    ProxyCommand none
    
Host bastion
    Hostname cbast.iad.rackspace.com
    ProxyCommand none
    User nels.nelson
    ForwardAgent yes
    ControlMaster auto
    ControlPath ~/.ssh/master-%r@%h:%p

Host github.com
    ProxyCommand ssh -q -A -W %h:%p bastion
    ForwardAgent yes
    GSSAPIAuthentication no
    VerifyHostKeyDNS no
    HashKnownHosts no
    TCPKeepAlive yes
    ServerAliveInterval 300

Host *.ohthree.com
    ProxyCommand ssh -q -A -W %h:%p bastion
    ForwardAgent yes
    GSSAPIAuthentication no
    VerifyHostKeyDNS no
    HashKnownHosts no
    TCPKeepAlive yes
    ServerAliveInterval 300

Host *
    #ProxyCommand ssh -aY bastion 'nc -w 900 %h %p'
    ProxyCommand ssh -q -A -W %h:%p bastion
    ForwardAgent no
    GSSAPIAuthentication no
    VerifyHostKeyDNS no
    HashKnownHosts no
    TCPKeepAlive yes
    ServerAliveInterval 300