Fortigate 最多可以指定4個 syslog server

 Ref: https://community.fortinet.com/t5/FortiGate/Technical-Tip-Configuring-multiple-SYSLOG-servers/ta-p/194117

UI 上設定的是 config log syslogd setting

# config log {syslogd | syslogd2 | syslogd3 | syslogd4} setting
set status {enable | disable}
set csv {enable | disable}
set facility {alert | audit | auth | authpriv | clock | cron | daemon | ftp | # kernel | local0 | local1 | local2 | local3 | local4 | local5 | local6 | local7 | lpr | mail | news | ntp | syslog | user | uucp}
set port <port_integer>
set reliable {enable | disable}
set server <address_ipv4 | FQDN>
set source-ip <address_ipv4>
end