+------------------+
             |                  |
             | Client           |
             |                  |
             +--------+---------+
                      |
             +--------+---------+
             |                  |
          +--+ LAN/WAN          |
          |  |                  |
          |  +--------------+---+
          |                 |
          |             +---+--------------+
          |             |                  |
          |             | Firewall/Router  |
          |             |                  |
          |             +---------+--------+
+---------+--------+              |    +------------------+      
|                  |              |    |                  | 
| Firewall/Router  |              +----+ Director         |
|                  |              |    |                  | 
+-+----------------+              |    +------------------+
  |     +------------------+      |
  |     |                  |      |
  +-----+ Real Server 1    +------+
  |     |                  |      |
  |     +------------------+      |
  |     +------------------+      |
  |     |                  |      |
  +-----+ Real Server 2    +------+
  |     |                  |      |
  |     +------------------+      |
  |             (...)             |
  |     +------------------+      |
  |     |                  |      |
  +-----| Real Server N    +------+
LAN B   |                  |     LAN B
        +------------------+