diff --git a/CloudComputing_Lab/modules/ROOT/pages/a.adoc b/CloudComputing_Lab/modules/ROOT/pages/a.adoc
index e1b766b..3b7335b 100644
--- a/CloudComputing_Lab/modules/ROOT/pages/a.adoc
+++ b/CloudComputing_Lab/modules/ROOT/pages/a.adoc
@@ -30,6 +30,8 @@ video::683282520[vimeo,start=184]
 
 === ssh config
 
+An SSH server is a software program which uses the secure shell protocol to accept connections from remote computers. SFTP/SCP file transfers and remote terminal connections are popular use cases for an SSH server.
+
 http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/build/site/swarmlab_sec-ssh-tunneling/docs/index.html#_sshd_config_ssh_server_configuration[SSH Configuration^]
 
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