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DI-206 ISDN Remote Router
47
2.
drop
–
This drops (doesn’t allow routing for) a specific packet that has met
the criteria of the corresponding filter.
3.
disable –
This does not apply the IP filter.
•
Interface –
This applies the filter to a specific interface, LAN or one of the ISDN
interfaces.
•
Protocol Type –
This is a protocol identifier, as assigned by the Internet
Assigned Numbers Authority (IANA). The values of this identifier are described
in RFC-1700. This router supports the following:
1
–
This is Internet Control Message (ICMP), defined in RFC 792.
6
–
This is Transmission Control (TCP), defined in RFC 793.
17
–
This is User Datagram (UDP), defined in RFC 798.
•
Src IP –
This is the source address in the IP header of this packet.
•
Src Netmask –
This mask is bit-wise AND’d with the source IP address and bit-
wise AND’d with the IP address of the incoming interface. The two results are
then compared.
•
Src Port –
This is the source port , in the TCP or UDP header, of the packet.
•
Src Port Operation –
This comparison operation is applied to the source port
(the
Src Port
parameter) value, of the TCP or UDP header.
•
Dst IP –
This is the destination address in the IP header of the packet.
•
Dst Netmask –
This mask is bit-wise AND’d with the destination IP address and
bit-wise AND’d with the IP address of the incoming interface. The two results are
then compared.
•
Dst Port –
This is the destination port, in the TCP or UDP header, of the packet.
•
Dst Port Operation –
This comparison operation is applied to the destination
port (the
Dst Port
parameter) value, of the TCP or UDP header.
•
ICMP Type –
This is the type field, in the ICMP header, used to identify a
particular ICMP message.
•
ICMP Code –
This is the code field, in the ICMP header, used to further specify
the ICMP type.
•
TCP Flag –
This is a hex number, representing the six flag bits in the TCP
header. The value range is from 0 to 3F.
Multiple Home Configuration
Besides the IP address assigned to the LAN interface in the
Network Configuration
menu, the LAN may have up to 3 additional IP interfaces. These additional IP
interfaces are referred to as MIP1 to MIP3. This type of configuration is known as a
multiple home configuration.