FortiGate
FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
Not applicable
Article Id 197294
Article
DescriptionDescription of the log message "virus = unknown"
Components
  • All FortiGate units running FortiOS 2.8.
Steps or Commands

On a FortiGate unit with antivirus and logging enabled, the following message may appear in the logs:

log, from="n/a" to="n/a" virus="unknown" msg="email exceeds size limit"

A FortiGate unit does not report a virus as unknown. These log messages are caused, as the message says, when there is an oversize limit check. The message means that a file that is transmitted through a FortiGate unit was checked for being oversized. The FortiGate unit creates the log message above whether the file has been blocked or passed.