Other than the compelling security reasons, you will want to enable SSL to take advantage of a couple of monitoring and debugging tools: the TDS Remote Management Tool, and the TdsMonitor Tool -- both of which (out-of-the-box) require SSL to access.
If Tomcat has not already been configured to run via SSL, follow the tutorial in the previous section to Enable SSL in Tomcat.
/conf/tomcat-users.xml to add the new
      tdsConfig and tdsMonitor roles. Add these roles to your list
      of roles:
    
  <tomcat-users> <role rolename="manager-gui"/>
      <role rolename="tdsConfig"/> <role
      rolename="tdsMonitor"/>
      <user username="admin" password="e5e9fa1ba31ecd1ae84f75caaa474f3a663f05f4"
      roles="manager-gui,tdsConfig, tdsMonitor"/> </tomcat-users>