End User RIP Problems
Notes:
John urgently needs web and email access for a legitimate project, but cannot get firewall authorization. In desperation, he buys a modem, sets up an account with a local ISP, and sets up his own connectivity.
What John does not realize is that his workstation, as soon as it has a second active interface, may begin to behave as a RIP router, advertising the Ethernet, and possibly all internal routes it hears.
This may lead to at least three types of problems. At point 1, Jane will suddenly notice a terrible drop in performance, as her workstation prefers going to John’s closer router function...and its 14.4 KBPS access line.
At Point 2, John’s router learns external routes and advertises them into the corporate network.
At Point 3, the external world learns of a back door into the corporate network, bypassing the firewall.