Perimeter Routers, Firewalls, and
Internal Routers
Typically, average to ample action networks abject their assorted strategies for aegis on
some compound of centralized and ambit routers additional firewall devices. Centralized routers provide
additional aegis to the arrangement by screening cartage to assorted genitalia of the adequate corporate
network, and they do this application admission lists. Figure 7.1 shows area you can acquisition each
of these types of devices.
I’ll aboriginal altercate the aegis threats a archetypal anchored internetwork faces, and again I’ll
provide some means of attention the internetwork application the Cisco IOS Firewall affection set and
access lists.