Printer browsing allows your server to automatically share its printers with client machines and other servers. To make sure printer information only comes from certain servers and clients, edit the /etc/cups/cupsd.conf file. Locate the BrowseOrder, BrowseAllow and BrowseDeny directives and then edit or add IP or netmask addresses to your liking. Some examples:

# Deny from everybody except for servers 192.10.2.3 and 192.10.2.5

BrowseOrder deny,allow BrowseDeny from all BrowseAllow 192.10.2.3 BrowseAllow 192.10.2.5

# Deny from everybody except for servers under 192.10.2.x

BrowseOrder deny,allow BrowseDeny from all BrowseAllow 192.10.2.0/255.255.255.0

To enable the changes in the configuration file, restart the cupsd daemon.