When managing NetApps with your browser over http(s) you can also use the commandline utility. You can find it under 'Filer' → 'Use Command Line'. However, on one of my filers (strangely enough the other filer did work) I got a java error:

load: class com/netapp/admin/FilerSNMPConfigUIApplet.class not found.
java.lang.ClassNotFoundException: com.netapp.admin.FilerSNMPConfigUIApplet.class
                at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
                at java.lang.ClassLoader.loadClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
                at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Received fatal alert: bad_record_mac
                at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
                at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
                at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
                at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
                at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
                at java.net.HttpURLConnection.getResponseCode(Unknown Source)
                at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
                at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
                at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
                at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
                at java.security.AccessController.doPrivileged(Native Method)
                ... 9 more
Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerSNMPConfigUIApplet.class
load: class com/netapp/admin/FilerCommandApplet.class not found.
java.lang.ClassNotFoundException: com.netapp.admin.FilerCommandApplet.class
                at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
                at java.lang.ClassLoader.loadClass(Unknown Source)
                at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
                at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Received fatal alert: bad_record_mac
                at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
                at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
                at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
                at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
                at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
                at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
                at java.net.HttpURLConnection.getResponseCode(Unknown Source)
                at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
                at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
                at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
                at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
                at java.security.AccessController.doPrivileged(Native Method)
                ... 9 more
Exception: java.lang.ClassNotFoundException: com.netapp.admin.FilerCommandApplet.class

As said before, the other filer did work, and that was with the same browser, same filer type etc. The error was received with both Internet Explorer and FireFox.

• Start the Control Panel → Java → Advanced Settings Tab → Security List
• Deselect the TLS1.0 protocol.
• Close all browser windows.

In my case this solved the issue, but you might also want to disable it in the browser:

• In IE, go to Tools → Internet Options → Advanced and scroll to Security. Uncheck 'Use TLS 1.0'.

• In Firefox, go to Tools → Options → Advanced → Encryption and uncheck the 'Use TLS 1.0' box.