In a larger organization, or if the network above grew, we might choose to expand our network topology using one or more IPCop firewalls. Very large networks are out of the scope of this book alone, as they require aggregated knowledge and experience that a networking/IT professional will need to glean from multiple sources.
Note
The IPCop Mailing List
The IPCop user mailing list is a very good source of information on extending IPCop and deploying it in more advanced roles. It is worth subscribing to and perusing for those who have more than a passing interest in IPCop. The archives for this mailing list can be found at https://sourceforge.net/mailarchive/forum.php?forum_id=4957 and there is a subscription page at http://lists.sourceforge.net/lists/listinfo/ipcop-user.
Several IPCop firewalls might be used by such an individual in order to separate several sites, or in order to further segregate one or more DMZs with physically distinct...