Re: [squid-users] Squid with Auth Active Directory on a large network.

From: Serassio Guido <guido.serassio@dont-contact.us>
Date: Sun, 11 Dec 2005 12:10:21 +0100

Hi,

At 11.44 11/12/2005, Noc Phibee wrote:

>Anyone can answer at my question ?
>
>Ok a large systems, i put :
>
>auth_param ntlm children 50
>auth_param ntlm max_challenge_lifetime 10 minutes
>
>auth_param basic children 50
>auth_param basci max_challenge_lifetime 10 minutes

This parameter doesn't exist.

>for no put a big request on the PDC ?

Don't enable challenge reuse with a so large AD environment:
challenge reuse is know to trigger many stability problems in Squid.

You should use "auth_param ntlm use_ntlm_negotiate on" in squid.conf .
But using NTLM, with 20000 users a big authentication load on your
DCs is predictable, with or without NTLM Negotiate.

You should verify the number of used helpers using cachemgr.cgi:
- Basic helpers are not heavy used in NTLM environments, so 50 may be
a too large value
- Insted, NTLM helpers are heavy used, and 50 could be not enough in peak hours

Regards

Guido

-
========================================================
Guido Serassio
Acme Consulting S.r.l. - Microsoft Certified Partner
Via Lucia Savarino, 1 10098 - Rivoli (TO) - ITALY
Tel. : +39.011.9530135 Fax. : +39.011.9781115
Email: guido.serassio@acmeconsulting.it
WWW: http://www.acmeconsulting.it/
Received on Sun Dec 11 2005 - 04:10:25 MST

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