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CISCO IOS in a Nutshell
book

CISCO IOS in a Nutshell

by James Boney
December 2001
Intermediate to advanced
608 pages
25h 14m
English
O'Reilly Media, Inc.
Content preview from CISCO IOS in a Nutshell

Name

ntp access-group — global

Synopsis

ntp access-group [condition] access-list
no ntp access-group [condition] access-list
            

Configures

Network Time Protocol (NTP) service

Default

None

Description

This command applies an access list to the router’s NTP service.

condition

Optional. Specifies the type of NTP queries to which the access list applies. Valid values are query-only, serve-only, serve, and peer. query-only allows NTP control requests only; serve-only allows time requests only; serve allows time requests and NTP control requests, but does not allow the router to synchronize its time with another NTP peer; peer allows time requests, NTP control requests, and time synchronization with other NTP peers. If this keyword is omitted, the access list applies to all queries.

access-list

A standard access list to be applied to NTP connections.

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Publisher Resources

ISBN: 156592942XCatalog PageErrata