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Inbound Traffic Filter Criteria and Actions

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3-9

IP Criteria and Actions

You can filter IP inbound traffic based on specified bit patterns in one of the

following headers in an IP datagram:

• The IP header

• The header of the upper-level protocol (TCP or UDP, for example)

Predefined IP Criteria

Table 3-6 lists the predefined criteria for IP inbound traffic filters, and the

reference field, offset, and length for each criterion.

User-Defined IP Criteria

In addition to the predefined filter criteria, you can create IP inbound traffic filters

with user-defined criteria by specifying an offset and length to these reference

fields in the IP header (Table 3-7

Table 3-6. Predefined Criteria for IP Inbound Traffic Filters

Criterion Name Reference Field Offset Length

Type of Service HEADER_START 8 8

Protocol ID HEADER_START 72 8

IP Source Address HEADER_START 96 32

IP Destination Address HEADER_START 128 32

UDP or TCP Source Port HEADER_END 0 16

UDP or TCP Destination Port HEADER_END 16 16

Established TCP*

* Allows filtering on the ACK and RESET bits in the TCP header. You do not specify a range for this

criterion

HEADER_END 107 3

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 183 184

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Avaya Configuring Traffic Filters and Protocol Prioritization Manual do Utilizador Página 59