[10] As you can see, the first HTTP request is perfectly ordinary, but the other two are most unusual: there is no browser information, the weird OPTIONS * method is used, and the client requests the URL /antidisestablishmentarianism which our server doesn't host.
Examine all HTTP requests that contain no browser information. To do this, enter a filter condition in the Filter field to mean: show all HTTP request packets without a user-agent value. To see a list of valid keywords for filter expressions, click the + Expression button to edit filter parameters:
Now open the HTTP category in the Field name list.
Browse through the available parameters and make a note of the ones that might be useful. Now enter the following in the Filter field:
