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Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring the ASA CSC Module
Configuration Examples for the CSC SSM
Shutting Down the Module
If you restart the ASA, the module is not automatically restarted. To shut down the module, perform the
following steps at the ASA CLI.
Detailed Steps
Configuration Examples for the CSC SSM
To identify the traffic that you want to scan, you can configure the ASA in different ways. One approach
is to define two service policies, one on the inside interface and one on the outside interface, each with
an access list that matches traffic to be scanned. The following example is based on the network shown
in Figure 1-3 and shows the creation of two service policies for a common CSC SSM scanning scenario:
• The first policy, csc_out_policy, is applied to the inside interface and uses the csc_out access list to
ensure that all outbound requests for FTP and POP3 are scanned. The csc_out access list also
ensures that HTTP connections from inside to networks on the outside interface are scanned, but it
includes a deny ACE to exclude HTTP connections from inside to servers on the DMZ network.
• The second policy, csc_in_policy, is applied to the outside interface and uses the csc_in access list
to ensure that requests for SMTP and HTTP originating on the outside interface and destined for the
DMZ network are scanned by the CSC SSM. Scanning HTTP requests protects the web server from
HTTP file uploads.
hostname(config)# access-list csc_out permit tcp 192.168.10.0 255.255.255.0 any eq 21
hostname(config)# access-list csc_out deny tcp 192.168.10.0 255.255.255.0 192.168.20.0
255.255.255.0 eq 80
hostname(config)# access-list csc_out permit tcp 192.168.10.0 255.255.255.0 any eq 80
hostname(config)# access-list csc_out permit tcp 192.168.10.0 255.255.255.0 any eq 110
hostname(config)# class-map csc_outbound_class
hostname(config-cmap)# match access-list csc_out
hostname(config-cmap)# policy-map csc_out_policy
hostname(config-pmap)# class csc_outbound_class
hostname(config-pmap-c)# csc fail-close
hostname(config-pmap-c)# service-policy csc_out_policy interface inside
hostname(config)# access-list csc_in permit tcp any 192.168.20.0 255.255.255.0 eq 25
hostname(config)# access-list csc_in permit tcp any 192.168.20.0 255.255.255.0 eq 80
hostname(config)# class-map csc_inbound_class
hostname(config-cmap)# match access-list csc_in
hostname(config-cmap)# policy-map csc_in_policy
Command Purpose
hw-module module 1 shutdown
Example:
hostname# hw-module module 1 shutdown
Shuts down the module.
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