Are IP phone systems secure?
- By John x_Zyskowski
- Sep 18, 2000
Before the Pearl Harbor Naval Shipyard could connect its new voice-over-IP
(VOIP) phone system, which runs on the yard's internal data network, to
the public telephone system, it had to have the system's security approved
by the Navy's security specialists.
"We wanted to be sure that this gateway didn't create any security risks,"
said Stephen Sasaki, the assistant to the chief information officer at the
The first step was getting a white paper from Cisco Systems Inc., the
supplier of the voice-over-IP solution, that explained why the risks of
intrusion were minimal. "It's not a security risk because there is no way
for that interface to support anything but inbound voice calls," said Mike
Rau, Cisco's director of systems engineering for federal sales. "If you
had a modem and tried to dial into that VOIP gateway, there's no modem in
it to terminate that call. Both ends have to have modems."
The Navy has apparently agreed with this assessment and has given the
project the go-ahead.