Cisco ASA Audit Event: 106021

Cisco ASA Events

The logs of network perimeter devices such as firewalls, antivirus applications and intrusion prevention systems contain crucial information that helps to pre-emptively block security attacks and breaches. Hence, it's mandatory for you to monitor and audit these logs. Because Cisco ASA provides the combined functionality of all the three, it becomes all the more important to monitor its logs. 

ManageEngine's EventLog Analyzer, a comprehensive log management solution, collects and analyzes the log data from Cisco ASA devices, triggers alerts and generate reports on detected security incidents thus helping you to take suitable measures against security threats, if any. 

Cisco » 106021: Deny protocol reverse path check

106021: Deny protocol reverse path check

Cisco ASA is a security device that provides the combined capabilities of a firewall, an antivirus, and an intrusion prevention system. It also facilitates virtual private network (VPN) connections. It helps to detect threats and stop attacks before they spread through the network.

Message: %ASA-1-106021: Deny protocol reverse path check from source_address to dest_address on interface interface_name.

Event 106021 is generated when a packet that does not have a source address represented by a route is discarded by unicast RPF, which would have been enabled with 'IP verify reverse-path' command.

How could you resolve this situation?

If the unicast RPF feature has been enabled, no user action is required. The ASA would repel the attack.

We can help you simplify log management and improve your organization's security with EventLog Analyzer.

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