Fake network gear can be hard to spot

摘要

Subnets began dropping off the MortgagelT network one after another. Entire bank branches went offline for days as Joe Bruner, network engineering manager at the time, scrambled to purchase and install replacement parts. At first, he figured some of the new WAN interface cards (WIC) he recently installed to upgrade 50 Cisco 2811 routers during expansion and reorganization were faulty. But as more routers failed and dropped off the network, Bruner realized he was dealing with fakes.