Yamaha RTX810 - Enhancing Security; Understanding Internet Access Threats

92
Enhancing security
5
What is unauthorized
access from the Internet?
• While you are accessing the Internet, malicious
individuals may attack (gain unauthorized access to)
your PC or router to destroy the data or use the line
without permission. If a router is installed between your
PC and the Internet, then NAT, IP masquerade, and other
address conversion functions of the router can provide
security to a certain degree. However, even in such
an environment, possible setting errors or inadequate
settings pose a similar risk.
• In addition to unauthorized accesses via the Internet, you
should also be aware of the risk of attacks by computer
viruses.
• Should the settings of the product be modied or the PC
system or data be destroyed, a massive amount of data
and monetary damages would be resulted. You must
congure lter settings of the product or take other
security measures to protect your system.
Outline of unauthorized accesses and
security measures
A particular attention is required if a
global IP address is assigned to your
LAN
Malicious individuals mainly use “global IP addresses” to
gain a foothold for attack. The longer the same global IP
address is used, the higher the probability of unauthorized
access to the LAN.
When using a xed IP address service, or using a network
that keeps using a dynamic address assigned upon
connection with the Internet, we recommend that you
congure adequate security settings.
You should also give heed to the
password setting
Using the product without setting a password will pose
a great risk for security. Be sure to set the password, and
change it periodically.
U
P
LINK
1
3
4
2
PCServer
LAN
PC
PC
InternetInternet
Invalid
packets
Intrusion
from
security hole
Computer
virus
Invalid
packets
Intrusion
from
security hole
DOWN
LOAD
POWER
STATUS
LAN
WAN
micro8D
USB
WAN
4
3
2
1
ON
STANDBY
CONSOLE
LAN