User Manual
SmartAX MT800 ADSL CPE
Chapter 4 Web-based Management
4-33
regardless of the protocol (any). TCP, UDP, and ICMP are
commonly used IP protocols; others can be identified by
number, from 0-255, as defined by the Internet Assigned
Numbers Authority (IANA).
z
Apply Stateful Inspection: If this option is enabled, then
Stateful Filtering is performed and the rule is also applied
in the other direction on the given interface during an IP
session.
z
Source Port: Port number criterion for the computer(s)
from which the packet originates. This field will be dimmed
(unavailable for entry) unless you have selected TCP or
UDP as the protocol. See the description of Src IP Address
for the selection options.
z
Dest. Port: Port number criterion for the destination
computer(s) (i.e., the port number of the type of computer
to which the packet is being sent). This field will be dimmed
(unavailable for entry) unless you have selected TCP or
UDP as the protocol. See the description of Src IP Address
for the selection options.
z
TCP Flag: Specifies whether the rule should apply only to
TCP packets that contain the synchronous (SYN) flag, only
to those that contain the non-synchronous (NOT-SYN) flag,
or to all TCP packets. This field will be dimmed
(unavailable for entry) unless you selected TCP as the
protocol.
z
ICMP Type: Specifies whether the value in the type field in
ICMP packet headers will be used as a criterion. The value
can be any decimal value from 0-255. You can specify that
the value must equal (eq) or not equal (neq) to the
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