Host *
  ForwardAgent yes

Host reverseproxy
  User spb
  Hostname 10.10.40.49
  Port 55555
  ProxyCommand ssh spb@164.41.9.49 -p 22 nc %h 55555

Host reverseproxy.unconfigured
  User spb
  Hostname 164.41.9.49

Host integration
  User spb
  Hostname 164.41.9.49

Host database
  User spb
  Hostname 10.10.40.47
  ProxyCommand ssh spb@164.41.9.49 -p %p nc %h 22

Host social
  User spb
  Hostname 10.10.40.46
  ProxyCommand ssh spb@164.41.9.49 -p %p nc %h 22

Host email
  User spb
  Hostname 10.10.40.48
  ProxyCommand ssh spb@164.41.9.49 -p %p nc %h 22