Hai Ifan Subekti and welcome to the UTM Community!
It looks like only the power LED is on, so if disconnecting from power for 10 minutes and then plugging it back in doesn't work, you may need to replace the unit. If the 1-year warranty has expired, talk to your reseller about getting an SG 115 with a Network Protection subscription instead of a new RED. That should be less expensive than a RED 50 with warranty extensions and it gives you more flexibility in handling that site's traffic.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
Hai Ifan Subekti and welcome to the UTM Community!
It looks like only the power LED is on, so if disconnecting from power for 10 minutes and then plugging it back in doesn't work, you may need to replace the unit. If the 1-year warranty has expired, talk to your reseller about getting an SG 115 with a Network Protection subscription instead of a new RED. That should be less expensive than a RED 50 with warranty extensions and it gives you more flexibility in handling that site's traffic.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
