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Function Specification
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3.5.4.
IPv4 Packet Filtering
[Filtering point]
Filtering points of this product's IP packet filtering function are as follows.
・
When IPv4 packet is received at WAN interface.
・
When IPv4 packet is sent at WAN interface.
・
When IPv4 packet is received at LAN/wireless LAN interface.
・
When IPv4 packet is sent at LAN/wireless LAN interface.
[Filtering conditions]
Filter triggers are explained below.
Trigger
Description
Protocol
Specify the protocol to filter.
Specified by IP/TCP/UDP/ICMP/protocol number.
TCP flag
When the protocol is TCP, the TCP flag can be specified.
Type/Code
When the protocol is ICMP, type and code can be specified.
Source address
Specify the source IP address/mask length.
Source port number When protocol is TCP or UDP, the source port number can be specified.
Destination address Specify the destination IP address/mask length.
Destination port
number
When protocol is TCP or UDP, the destination port number can be specified.
Set the following filter setting according to the target packet for filtering.
*IPoE/PPPoE/IPsec1 can be selected in router mode.
Target Packet for Filtering
Target Interface
Filter Type
Direction
IPoE->LAN
IPoE
Transmission
(transmission packet)
in
LAN->IPoE
out
IPoE->This product
Sending and receiving (this
product's sent and received
packets)
in
This product->IPoE
out
PPPoE->LAN
PPPoE
Transmission
(transmission packet)
in
LAN->PPPoE
out
PPPoE->This product
Transmission and reception
(this product's sent and
received packets)
in
This product->PPPoE
out
LAN->WAN (IPoE/PPPoE)
LAN
Transmission
(transmission packet)
in
WAN (IPoE/PPPoE)->LAN
out
LAN->This product
Transmission and reception
(this product's sent and
received packets)
in
This product->LAN
out
IPsec1->LAN
IPsec1
Transmission (transmission
packet)
in
LAN->IPsec1
out
IPsec1->This product
Transmission and reception
(this product's sent and
received packets)
in
This product->IPsec1
out