radiuscontroller/Services/RadiusService.cs

@@ -126,6 +126,24 @@ public class RadiusService : IRadiusService
             Value = maxOctetsBytes.ToString()
         });
 
+        // Force NAS to send accounting interim-updates every 60 seconds
+        _db.RadReply.Add(new RadReply
+        {
+            Username = username,
+            Attribute = "Acct-Interim-Interval",
+            Op = "=",
+            Value = "60"
+        });
+
+        // Re-authenticate (instead of disconnect) when Session-Timeout fires
+        _db.RadReply.Add(new RadReply
+        {
+            Username = username,
+            Attribute = "Termination-Action",
+            Op = "=",
+            Value = "1"
+        });
+
         // Create Guest Profile record
         var profile = new GuestProfile
         {