Garmin HM210DP/DI User Manual

Page 94

Configuring Firewall Settings

EN/LZT 108 6492 R2 - October 2003

Source Port:

Port number criteria for the computer(s) from
which the packet originates. This field will be
dimmed (unavailable for entry) if you have not
specified a protocol critera. See the description of
Src IP Address for the selection options.

Dest Port:

Port number criteria 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.

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.

ICMP Type:

Specifies whether the value in the type field in
ICMP packet headers will be used as a criteria.
The code value can be any decimal value from 0
to 255. You can specify that the value must be
equal (eq) or not equal (neq) to the specified
value, or you can select any to enable the rule to
be invoked on all ICMP packets. This field will be
dimmed (unavailable for entry) unless you
specify ICMP as the protocol.

ICMP Code:

Specifies whether the value in the code field in
ICMP packet headers will be used as criteria.
The code value can be any decimal value from 0
to 255. You can specify that the value must be
equal (eq) or not equal (neq) to the specified
value, or you can select any to enable the rule to
be invoked on all ICMP packets. This field will be
dimmed (unavailable for entry) unless you
specify ICMP as the protocol.

IP Frag Pkt:

Determines how the rule applies to IP packets
that contain fragments. You can choose from the
following options:

Yes: The rule will be applied only to packets that
contain fragments.
No: The rule will be applied only to packets that
do not contain fragments.