Destination Internal Host

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Internal Router

IOS FirewEiJI

Internal Router

IOS FirewEiJI

IOS Firewall

IOS Firewall

(A) Internal Source îfMon.fo

(B) WWW Server

As Figure 16-6 illustrates, the source (A) is located on the internal network using the IP address 10.10.11.10, and the destination is a World Wide Web server (B) located on the Internet at 192.168.55.214. Again, this exercise does not use NAT for any address space. The Cisco IOS Firewall requires any internal host attempting to access the Internet to authenticate before allowing access.

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