Ahh… I see. I was using the service manager console that ships with Kiwi. It has different displays you can setup.
But… If you are still using Kiwi and this is a permanent filter (IE you never want to see these messages) and you want to use SAM, just setup the filter in the Kiwi setup prior to forwarding the syslogs to SAM.
When you say “Web Viewer” I’m going to guess you mean Kiwi Web Access? If that’s the case, the above can be done the same OR… If I’m not mistaken, you can use regular expressions in the web access filters to accomplish the same thing without having to open the manager console and create a filter rule.
I believe there is a section in the kiwi manual that briefly covers regular expressions if you are not familiar with them, however there are much more in depth tutorials, references and guides on the interwebs that can help you with what you need.