[other] wireless router / printer question

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http://ubuntuforums.org – Maybe not a Ubuntu specific question, but I'm not sure. I have a linksys wireless router (WRT160N). Connected wireless to the router is my laptop (running Ubuntu) and a wireless HP printer. Is there anyway to configure things such that the internet connection is 100% blocked, but I can still send jobs from my wireless laptop to the wireless printer through the router? Seems like I should be able to. (HowTos)