Cisco ASA Audit Event: 106023

106023: Deny protocol by access group

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-4-106023: Deny protocol src [interface_name :source_address/source_port ] [([idfw_user |FQDN_string ], sg_info )] dst interface_name:dest_address /dest_port [([idfw_user |FQDN_string ], sg_info )] [type {string }, code {code }] by access_group acl_ID [0x8ed66b60, 0xf8852875].

Event 106023 is generated when a real IP packet is denied by the ACL. This message appears even if you do not have the log option enabled for an ACL. The message contains:

  • The source and destination interface information
  • The access group
  • The ID of the Access Control List (ACL).

How could you resolve this situation?

Contact the remote host administrator if this event occurs because of the same source IP address.

Cisco ASA Auditing Tool

EventLog Analyzer is a comprehensive log management software with which you can centrally collect, analyze, and manage logs from all the different log sources in your network. You also get reports and alerts on your network security, making it a power-packed IT security tool.

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