Cisco ASA 5505 - Manual (Page 1183)

55-19
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 55 Configuring the Botnet Traffic Filter
Configuration Examples for the Botnet Traffic Filter
horrible.example.net(10.232.224.2) 2 2 3 Botnet
nono.example.org(209.165.202.130) 1 1 3 Virus
Last clearing of the top sites report: at 13:41:06 UTC Jul 15 2009
The following is sample output from the show dynamic-filter reports top malware-ports command:
hostname# show dynamic-filter reports top malware-ports
Port Connections logged
----------------------------------------------------------------------
tcp 1000 617
tcp 2001 472
tcp 23 22
tcp 1001 19
udp 2000 17
udp 2001 17
tcp 8080 9
tcp 80 3
tcp >8192 2
Last clearing of the top sites report: at 13:41:06 UTC Jul 15 2009
The following is sample output from the show dynamic-filter reports top infected-hosts command:
hostname# show dynamic-filter reports top infected-hosts
Host Connections logged
----------------------------------------------------------------------
10.10.10.51(inside) 1190
10.12.10.10(inside) 10
10.10.11.10(inside) 5
Last clearing of the top infected-hosts report: at 13:41:06 UTC Jul 15 2009
Configuration Examples for the Botnet Traffic Filter
This section includes the recommended configuration for single and multiple context mode, as well as
other possible configurations. This section includes the following topics:
• Recommended Configuration Example, page 55-19
• Other Configuration Examples, page 55-20
Recommended Configuration Example
The following recommended example configuration for single context mode enables downloading of the
dynamic database, and enables use of the database. It creates a class map for all UDP DNS traffic,
enables DNS inspection and Botnet Traffic Filter snooping with the default DNS inspection policy map,
and applies it to the outside interface, the Internet-facing interface.
Example 55-1 Single Mode Botnet Traffic Filter Recommended Example
hostname(config)# dynamic-filter updater-client enable
hostname(config)# dynamic-filter use-database
hostname(config)# class-map dynamic-filter_snoop_class
hostname(config-cmap)# match port udp eq domain
hostname(config-cmap)# policy-map dynamic-filter_snoop_policy
hostname(config-pmap)# class dynamic-filter_snoop_class