How is "We should teach our children that they must not talk to strangers, and likewise on the Internet, shut the door in their face." said in Romanian?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Ar trebui să ne învăţăm copiii să nu vorbească cu străinii şi să le închidă uşa în nas şi pe internet.