old boys' network: (noun) a community of wealthy, powerful people who help each other maintain wealth and power through business, educational and social connections.
nepotism: (noun) the practice of giving jobs or doing professional favors for friends and family members, usually considered corrupt

A: " Why are you surfing the Web?"
B: "I need to pay off my student loans and I have no money, so I'm looking for work."
A: "Did you hear John just got a high paying job at a bank in Shanghai?"
B: "John's family is rich. He doesn't even need money, but he got that job through the old boys' network. That kind of nepotism really makes me angry."