Blocking 2 URLs and Allowing 1 URL

You could always use a data group too and do a class match on the contents of this in an irule. This would be useful if you wanted to add further allowed URIs.

when HTTP_REQUEST {
  if { [class match [HTTP::uri] ne "allowed_uris"] } {
    drop
  }
} 

I think in small numbers performance of class match vs switch/if isn't much of a concern but it's another option nonetheless.

Hope this helps,

N