The desc explicitly states this is the description of local logging status, a human-readable explanation of why the gateway is currently writing logs locally. This tells you why local, on-box logging is active, which matters because local logs consume the gateway's own disk and, if left unmonitored, can eventually fill it and affect performance. e.g. fwLocalLoggingDesc = 'Logging locally due to lost connectivity to log server 10.1.1.50', explaining a nonzero fwLocalLoggingStat.