https://www.manageengine.com/products/eventlog/cisco-asa-events-auditing/cisco-error-sending-message-to-peer-unit-105509.html
105509: Error sending message to peer unit
Cisco ASA logs are crucial as the device provides the combined functionality of a firewall, an antivirus application, and an intrusion prevention system. Event...
errorsendingmessagepeerunit