Index: strongswan-5.9.5/init/systemd/strongswan.service.in
===================================================================
--- strongswan-5.9.5.orig/init/systemd/strongswan.service.in
+++ strongswan-5.9.5/init/systemd/strongswan.service.in
@@ -3,6 +3,17 @@ Description=strongSwan IPsec IKEv1/IKEv2
 After=network-online.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 
 Type=notify
 ExecStart=@SBINDIR@/charon-systemd
 ExecStartPost=@SBINDIR@/swanctl --load-all --noprompt