diff -purN a/scripts/systemd/nut-server.service.in b/scripts/systemd/nut-server.service.in
--- a/scripts/systemd/nut-server.service.in	2023-10-07 16:06:44.000000000 +0200
+++ b/scripts/systemd/nut-server.service.in	2023-11-03 19:49:51.496940092 +0100
@@ -26,6 +26,17 @@ Before=nut-monitor.service
 PartOf=nut.target
 
 [Service]
+# added automatically, for details please see
+# https://en.opensuse.org/openSUSE:Security_Features#Systemd_hardening_effort
+ProtectSystem=full
+ProtectHome=true
+ProtectHostname=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectKernelLogs=true
+ProtectControlGroups=true
+RestrictRealtime=true
+# end of automatic additions 
 # A busy server can be monitoring a lot of devices as well as replying
 # to many clients. The "infinity" definition is actually capped by OS
 # settings and hardcoded defaults; typically can be 65535+ nowadays.