© Microhard Systems Inc.
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4.0 Configuration
Image 4-8-2: Firewall > General
4.8.2 Firewall > General
The General Firewall settings allow users to enable or disable the firewall, and to decide which areas of the
modem to protect. The Firewall can also be reset to factory defaults from this area of the WebUI.
Firewall Status
When enabled, the firewall settings are in effect. When disabled, none of
the settings configured in the menu’s below have an effect, the modem is
“open” to anyone.
Values
Disable
/ Enable
Remote Management
Allow remote management of the IPn4G on the WAN/4G side using
the WebUI on port 80(HTTP), and 443 (HTTPS). If disabled, the
configuration can only be accessed from the LAN.
Values
Disable /
Enable
WAN Request
When Blocked the IPn4G will block all requests from the WAN/4G unless
specified otherwise in the Access Rules, MAC List, IP List configurations.
Access to ports 80 (HTTP) and 443 (HTTPS-if enabled), is still available
unless disabled in the
WAN
Remote Management
option.
Values
Block /
Allow
LAN to WAN Access Control
Allows or Blocks traffic from the LAN accessing the WAN unless specified
otherwise using the Access Rules, MAC, and IP List configuration.
Values
Block /
Allow
For best practices and to
control data usage it is
critical that the firewall be
configured properly.
It is recommended to block
all incoming 4G/Cellular
traffic and create rules to
open specific ports and/or
use ACL lists to limit
incoming connections.
When WAN is set to ‘Allow’
the modem is open to
anyone, this is not
recommended as it may
impact data usage from
unwanted sources.
Packet Normalization
Packet Normalization is the normalization of packets so there are no
ambiguities in interpretation by the ultimate destination of the packet. The
scrub directive also reassembled fragmented packets, protecting some
operating systems from some forms of attack, and drops TCP packets that
have invalid flag combinations.
Values
Enable /
Disable
