Avaya Configuring Traffic Filters and Protocol Prioritization Manuale Utente Scaricare il pdf (Pagina 147)

Configuration Examples and Implementation Notes

A-5

9. Click on Done.

You are returned to the protocol-speciﬁc Trafﬁc Filter window.

10. Click on Create.

11. In the Create Filter window, enter a name for the ﬁlter.

12. Select the template ﬁle you just created in the Templates scroll box.

13. Click on OK.

The ﬁlter is now applied to the selected interface.

Table A-1. Predeﬁned Criteria, Ranges, and Actions for Example Inbound Trafﬁc Filters

Filtering Goal Criterion to Specify Ranges to Specify Action to Specify Notes

Drop Telnet trafﬁc Criteria➔Add➔IP➔

TCP Frame➔TCP

Destination Port

Refer to Table 5-6 in

Chapter 5 for a list

of common TCP

destination port

codes.

Action➔Add➔Drop This ﬁlter will not

stop remote users

from establishing a

Telnet session with

the router itself. To

do that, set up a

drop ﬁlter on the

synchronous port

with the same

criterion, or create

outbound ﬁlters on

the remote links.

Conﬁgure a

subset of

allowed Telnet,

TFTP, and FTP

users

Criteria➔Add➔IP

Source Address

Client addresses

(Use dotted decimal

format)

Action➔Add➔

This strategy works

only if the

destination IP

address is one of

the router’s

interfaces and if the

protocol or well-

known port is

Telnet, TFTP, or

FTP.

Conﬁgure a

router to drop

BOOTP requests

from particular

clients

Criteria➔Add➔UDP

Frame➔UDP

Destination Port

MAC addresses of

BOOTP clients

Action➔Add➔Drop

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