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Re: Re: NTLM auth for RPC over HTTPS to outlook everywhere

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On 26/01/2012 9:22 p.m., Clem wrote:
Hi Amos,

I've tried, 2.7, 3.1.6, 3.1.18, 3.2.0.14 last release r11492, each time I've
the same issue, that works in basic mode but not ntlm with this issue :
fwdNegotiateSSL: Error negotiating SSL connection on FD on cache.log, and
TCP_MISS/401  RPC_IN_DATA and RPC_OUT_DATA.

Ah. Setup problems on the SSL part of the SSL link between Squid and the backend server.

This config is working for a great many people exactly as written:
  http://wiki.squid-cache.org/ConfigExamples/Reverse/ExchangeRpc

With the mention of SSL I think the SSL libraries used by Squid and the Exchange server are not agreeing on SSL versions which are safe to use. Or the exchange server may be validating and rejecting the client certificate used by Squid cache_peer line.

* enabling persistent connections to both servers and clients in Squid?

How to enable this on squid ? please

squid.conf:
 server_persistent_connections on
 client_persistent_connections on


* and HTTP/1.1 features to proxies in the MS client software? ->  I use
standard settings of rpc proxy in exchange 2007 sp3, I don't know if I can
set this feature, I'll try to look for.

I am planning to use a sniffer to see exactly what's going on when the auth
fails.

By the way, thanks for your answer

Have a good day

Clémence

-----Message d'origine-----
De : Amos Jeffries [mailto:squid3@xxxxxxxxxxxxx]
Envoyé : jeudi 26 janvier 2012 05:51
À : squid-users@xxxxxxxxxxxxxxx
Objet : Re:  Re: NTLM auth for RPC over HTTPS to outlook
everywhere

On 26/01/2012 4:50 a.m., Clem wrote:
Amos,

Can you tell me if there'll be soon a revision of 3.2 beta for fixing the
problem with ntlm auth via rpc over https (outlook anywhere) ?
There is another beta package scheduled to go out next weekend (early Feb).

I'm not sure what the "doesn't work" problem you are seeing is exactly
happening to say whether it is fixed by that package.

Have you tried:
* the latest 3.1 release? the statusIfComplete message you reported
might be a sign that the RPC method is hitting bug 3398 which was fixed
in 3.1.17 and later.
* or the current 3.2 beta daily bugfix snapshot? more HTTP/1.1
persistent connection problems are fixed there than in 3.1
* enabling persistent connections to both servers and clients in Squid?
* and HTTP/1.1 features to proxies in the MS client software?

If all else fails  have you tried viewing the packets being sent on the
client-squid and squid-server connections to see what is breaking?

Amos

Thanks, regards

Clémence

-----Message d'origine-----
De : cl00m [mailto:clemfree@xxxxxxx]
Envoyé : mardi 24 janvier 2012 15:55
À : squid-users@xxxxxxxxxxxxxxx
Objet :  Re: NTLM auth for RPC over HTTPS to outlook
everywhere
Please, help ...

I'll have to find another solution if squid doesn't work with NTLM auth
for
rpc over https to outlook anywhere...


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