If you log successful TLS handshakes in addition to unsuccessful
TLS handshakes, configure a larger log storage space quota for the
Decryption log ().
The default quota (allocation) is one percent of the device’s log
storage capacity for Decryption logs and one percent for the general
decryption summary. There is no default allocation for hourly, daily,
or weekly decryption summaries.
Configure Decryption Logging provides
more information about how to allocate firewall log space to Decryption
logs.