TRENDnet TW-H6W1IR User Manual

Page 79

TW-H6W1IR ISDN Remote Router

Configuration and Management

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:

4. protocol type = 1, this is Internet Control Message (ICMP),

defined in RFC 792.

5. protocol type = 6, this is Transmission Control (TCP), defined

in RFC 793.

6. protocol type = 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.

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.