Ppp Accounting Statistics - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

ppp chap-challenge-length
ppp max-bad-auth

PPP Accounting Statistics

Copyright © 2010, Juniper Networks, Inc.
If PPP receives a NAK from the peer in response to the CHAP request, then the router
attempts PAP negotiation. If PAP is also rejected, then PPP terminates the session.
Use the no version to specify that the router does not require authentication.
See ppp authentication.
Use to modify the length of the CHAP challenge by specifying the allowable minimum
length and maximum length.
Specify the minimum and maximum lengths in bytes in the range 8–63.
CAUTION: Do not decrease the range. Increasing the range is acceptable,
provided that you do not lower the minimum to do so. The recommended
minimum is 16. A longer challenge and a more unpredictable challenge
length provide a higher level of security.
The maximum length must be greater than or equal to the minimum length.
Example
host1(config-if)#ppp chap-challenge-length 24 28
Use the no version to restore the default minimum (16 bytes) and default maximum
(32 bytes).
See ppp chap-challenge-length.
Use to specify the maximum number of authentication retries the router allows before
terminating a PPP session
This value applies to PAP and CHAP authentication.
The range is 0–7. The default is 0, which indicates that no retries are allowed.
Example
host1(config-if)#ppp max-bad-auth 3
Use the no version to return the number of retries to the default, 0.
See ppp max-bad-auth.
The JunosE Software begins the collection of accounting statistics for terminated PPP
sessions following, but not including, authentication acknowledgement from the E Series
router. The acknowledgment is either a CHAP success or PAP acknowledgement packet.
Chapter 8: Configuring Point-to-Point Protocol
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