Upgrade Firmware - Planex BLW-54PM User Manual

Data - Security Screen
Firewall
If enabled, DoS (Denial of Service) attacks will be detected and
Enable DoS
blocked. The default is enabled. It is strongly recommended that this
Firewall
setting be left enabled.
Note:
•
•
This setting affects the number of half-open connections allowed.
Threshold
•
•
•
Options
The ICMP protocol is used by the ping and traceroute programs, and
Respond to
by network monitoring and diagnostic programs.
ICMP
•
•
The IPSec protocol is used to establish a secure connection, and is
Allow IPsec
widely used by VPN (Virtual Private Networking) programs.
•
•
PPTP (Point to Point Tunneling Protocol) is widely used by VPN
Allow PPTP
(Virtual Private Networking) programs.
•
•
L2TP is a protocol developed by Cisco for VPNs (Virtual Private
Allow L2TP
Networks).
•
•

5.10 Upgrade Firmware

The firmware (software) in the BLW-54PM can be upgraded using your Web Browser.
A DoS attack does not attempt to steal data or damage your PCs,
but overloads your Internet connection so you can not use it - the
service is unavailable.
This device uses "Stateful Inspection" technology. This system
can detect situations where individual TCP/IP packets are valid,
but collectively they become a DoS attack.
A half-open connection arises when a remote client contacts the
Server with a connection request, but then does not reply to the
Server's response.
While the optimum number of half-open connections allowed (the
Threshold) depends on many factors, the most important factor is
the available bandwidth of your Internet connection.
Select the setting to match the bandwidth of your Internet
connection.
If checked, the BLW-54PM will respond to ICMP packets
received from the Internet.
If not checked, ICMP packets from the Internet will be ignored.
Disabling this option provides a slight increase in security.
If checked, IPSec connections are allowed.
If not checked, IPSec connections are blocked.
If checked, PPTP connections are allowed.
If not checked, PPTP connections are blocked.
If checked, L2TP connections are allowed.
If not checked, L2TP connections are blocked.
59