Cisco ASA Audit Event: 106015

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 » 106015: Deny TCP packet

106015: Deny TCP

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-6-106015: Deny TCP (no connection) from IP_address /port to IP_address /port flags tcp_flags on interface interface_name.

Event 106015 is generated when the ASA discards a TCP packet because it had no associated connection in the ASA connection table.

How could you resolve this situation?

This event does not require any action unless the ASA receives a large volume of such invalid TCP packets. If this is the case, trace the source of these packets and determine the reason these packets were sent.

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

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