Cisco ASA 5540 User Manual

1-20
Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring the Transparent or Routed Firewall
Firewall Mode Examples
How Data Moves Through the Transparent Firewall
Figure 1-8 shows a typical transparent firewall implementation with an inside network that contains a
public web server. The ASA has an access list so that the inside users can access Internet resources.
Another access list lets the outside users access only the web server on the inside network.
Figure 1-8 Typical Transparent Firewall Data Path
This section describes how data moves through the ASA and includes the following topics:
• An Inside User Visits a Web Server, page 1-21
• An Inside User Visits a Web Server Using NAT, page 1-22
• An Outside User Visits a Web Server on the Inside Network, page 1-23
• An Outside User Attempts to Access an Inside Host, page 1-24
www.example.com
209.165.201.2
Management IP
209.165.201.6
209.165.200.230
Web Server
209.165.200.225
Host
209.165.201.3
Internet
92412

Cisco ASA 5540 Specifications

General

Firewall Throughput	650 Mbps
Maximum Firewall Connections	400, 000
VPN Throughput	225 Mbps
Maximum VPN Peers	5, 000
High Availability	Active/Active, Active/Standby
IPSec VPN Throughput	225 Mbps
Memory	1 GB
IPS Throughput	225 Mbps
Security Contexts	50
Flash Memory	64 MB
Form Factor	1U
Power Supply	Dual
Interfaces	4 x 10/100/1000 Ethernet