Security and Firewalls

Routing daemons offer security controls based on UDP service groups and subject names (see Restricting Message Flow). In addition, the routing daemon works in concert with firewalls to constrain information flow.

The WAN in Routing Daemon WAN with Firewalls connects two enterprises across the Internet. Each enterprise protects its networks with firewalls. Notice that the routing daemon within the DMZ does not serve any local network; instead that routing daemon operates as a way station, forwarding messages across the firewalls on either side of it.

Figure 70: Routing Daemon WAN with Firewalls