I would add this line to the LAN PC's hosts file,
(assuming it's Windows PC's - C:\WINDOWS\system32\drivers\etc\hosts):
Then the LAN PCs know where to look for buro.
You could also change their primary DNS to 192.168.190.17,
but then your server will be asked for all domains requested from LAN PC's
which would be rejected, and then the LAN PC's will try with their secondary DNS.
If you have a domain with DNS (or too many LAN PC's to edit) you could also point
buro.yourdomain.com to 192.168.190.17 from your domain provider's DNS control panel.
Some gateways/routers also have the ability to resolve local domains.
This is only about resolving. It's not about configuring the server alias.