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Home > Success Center > Log & Event Manager (LEM) > LEM - Knowledgebase Articles > How does Cisco Block IP active response work

How does Cisco Block IP active response work

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Updated March 10, 2017

Overview

The LEM can block IP addresses on firewalls. 

Environment

  • LEM All versions
  • Cisco PIX and ASA firewalls

Detail

When LEM uses the Block IP active response, it connects to the firewall over ssh or telnet and issues a shun command like this:
shun {IP_Address}
This will cause the ASA to block all traffic originating at the specified ip address.

 

 

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