Quoting Ugo Bellavance <ugob at camo dash route dot com>:

> Seth Martin wrote:
> > Not to be insulting but you have SNMP enabled on the Monowall and the
> > community name set the same as what you are using in monomon right?
> 
> Not insulting...  Yes, it is activated, an the community name is ok as well.

For some reason it didn't work for me with community names other than "public". 
So "public" community name is the only one it works with.