Paradyne 8540 User Manual page 64

MCC Card Configuration
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Table 5-4. IP Router Menu Options (3 of 4)
IP Router Filters (IP Filter Configuration)
Gives the user the ability to build name sets of filter rules. A filter is a rule (or set of
rules) that is applied to a specific interface to indicate whether a packet can be
forwarded or discarded. You can add, edit, or delete router filter rules within a named
set. View filter names by pressing Ctrl-v.
A filter works by successively applying the rules to the information obtained from the
packet header until a match is found. The filter then performs the action specified by the
rule on that packet, which can be forwarded, discarded, or both.
Rules apply to the source and destination ports going to the end-user system. You may
have up to 33 rules per filter, but the greater number of rules, the lesser the
performance of the router filter.
On the MCC card, a maximum of two filters can be configured.
For additional information on IP Router filters, see Chapter 7, IP Filtering , of the HotWire
DSLAM for 8540 and 8546 DSL Cards Network Configuration Guide .
Action – Add/Delete/Edit.
Filter Name – Up to 16 characters (optional).
Default Filter Action – Discard (Packet)/Forward (Packet).
Rule # – Up to 33 rules can be configured for each filter. This number is automatically
assigned.
# of Rules – Number of rules that apply to this port.
Source Address – nnn.nnn.nnn.nnn format.
Source Address Mask – nnn.nnn.nnn.nnn format. If you specify a source subnet mask
of 0.0.0.0, the system skips the source address comparison.
Source Port No – 0–65536 (Default = 0). If the source port number is 0, the system
filters ICMP packets in addition to the packet types defined in the rule.
Comparison Type – Ignore – Do not do a comparison. To do a comparison on the port
number specified in the packet and the rule, specify one of the following: Ignore –
Ignore ports. EQ – Equal to, NEQ – Not Equal To, GT – Greater than, LT – Less than,
In_Range – Within the specified range, Out_Range – Outside of the specified range.
Destination Address – nnn.nnn.nnn.nnn format.
Destination Address Mask – nnn.nnn.nnn.nnn format. If you specify a destination
subnet mask of 0.0.0.0, the system skips the destination address comparison.
Destination Port No – 0–65536 (Default = 0). If the source port number is 0, the
system filters ICMP packets in addition to the packet types defined in the rule.
Comparison Type – Ignore – Ignore ports, EQ – Equal to, NEQ – Not Equal To,
GT – Greater than, LT – Less than, In_Range – Maximum source port,
Out_Range – Minimum source port.
Filter Action – Discard (Packet)/Forward (Packet).
Rule Type – Static/Dynamic (Default = Static).
Delete Rule – Yes/No.
Go to Rule Number – Default = 0.
November 1997
A-E-C
8000-A2-GB20-20