Arcsight formatted logs from LTM (only)

I was looking into this aswell about a year ago, and my findings were the same as crodriguez mentiones. There does not seem to be any "native" support in just LTM for ArcSight and CEF output.

Some useful links I found for formatting the logs as CEF.

Also, have a look at this for available parameters

To send CEF from a request profile this is what we use

Request settings / Template:    
$DATE_MON $DATE_DD $TIME_HMS $BIGIP_HOSTNAME CEF:0|F5|BIG-IP|||HTTP Request|Low| src=$CLIENT_IP spt=$CLIENT_PORT dst=$SERVER_IP dpt=$SERVER_PORT requestMethod=$HTTP_METHOD request=$HTTP_URI requestClientApplication=${User-agent}

Response settings / Template:    
$DATE_MON $DATE_DD $TIME_HMS $BIGIP_HOSTNAME CEF:0|F5|BIG-IP||$HTTP_METHOD:$HTTP_STATCODE|HTTP Response|Low| src=$CLIENT_IP spt=$CLIENT_PORT dst=$SERVER_IP dpt=$SERVER_PORT deviceSeverity=$HTTP_STATCODE requestMethod=$HTTP_METHOD request=$HTTP_URI requestClientApplication=${User-agent} in=${Content-Length} out=$RESPONSE_SIZE sourceTranslatedAddress=$SNAT_IP sourceTranslatedPort=$SNAT_PORT requestUrlQuery=$HTTP_QUERY cs2=$RESPONSE_MSECS cs2Label=time-taken

Config

ltm pool arcsight_log_pool {
    members {
        connector1.company.com:514 {
            address 10.10.10.10
        }
    }
}

ltm profile request-log COMPANY_request_logging_profile {
    app-service none
    defaults-from /Common/request-log
    log-response-by-default yes
    request-log-pool /Common/arcsight_log_pool
    request-log-protocol mds-udp
    request-log-template "$DATE_MON $DATE_DD $TIME_HMS $BIGIP_HOSTNAME CEF:0|F5|BIG-IP|||HTTP Request|Low| src=$CLIENT_IP spt=$CLIENT_PORT dst=$SERVER_IP dpt=$SERVER_PORT requestMethod=$HTTP_METHOD request=$HTTP_URI requestClientApplication=${User-agent}"
    request-logging enabled
    response-log-pool /Common/arcsight_log_pool
    response-log-protocol mds-udp
    response-log-template "$DATE_MON $DATE_DD $TIME_HMS $BIGIP_HOSTNAME CEF:0|F5|BIG-IP||$HTTP_METHOD:$HTTP_STATCODE|HTTP Response|Low| src=$CLIENT_IP spt=$CLIENT_PORT dst=$SERVER_IP dpt=$SERVER_PORT deviceSeverity=$HTTP_STATCODE requestMethod=$HTTP_METHOD request=$HTTP_URI requestClientApplication=${User-agent} in=${Content-Length} out=$RESPONSE_SIZE sourceTranslatedAddress=$SNAT_IP sourceTranslatedPort=$SNAT_PORT requestUrlQuery=$HTTP_QUERY cs2=$RESPONSE_MSECS cs2Label=time-taken"
    response-logging enabled
}

This post has an example of using an irule and remote logging to send CEF. Measuring Response time based on POST and GET Parameters

/Andreas