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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Dear Amos, Alex, Eliezer,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Thank you for your support.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Sorry for my low experience and knowledge…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Your comment is helpful for me, and could you let me know more about "note" ACL.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">I can not understand it, even checking the website.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Q1. Could you let me know about “note” ACL?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Q2. If possible, sample config which is using(combined) “ext_kerberos_ldap_group_acl” and “tcp_outgoing_address” and “note ACL”.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Again, thanks for your support.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ">Kawai<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:メイリオ"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> squid-dev <squid-dev-bounces@lists.squid-cache.org>
<b>On Behalf Of </b>?Amos Jeffries?<br>
<b>Sent:</b> Friday, January 15, 2021 8:16 AM<br>
<b>To:</b> Alex Rousskov <rousskov@measurement-factory.com>; squid-dev@lists.squid-cache.org<br>
<b>Subject:</b> Re: [squid-dev] effective acl for tcp_outgoing_address<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US">FYI, this use case is why recent versions of kerberos auth helper being used in the OP config produces group= annotations for authenticated users. The note ACL mentioned can check for group SSID any of the fast access
checks.<br>
<br>
Amos<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><br>
<br>
-------- Original message --------<br>
From: Alex Rousskov <<a href="mailto:rousskov@measurement-factory.com">rousskov@measurement-factory.com</a>><br>
Date: Fri, 15 Jan 2021, 03:25<br>
To: <a href="mailto:squid-dev@lists.squid-cache.org">squid-dev@lists.squid-cache.org</a><br>
Subject: Re: [squid-dev] effective acl for tcp_outgoing_address<o:p></o:p></span></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span lang="EN-US">On 1/13/21 7:47 PM, Hideyuki Kawai wrote:<br>
<br>
> 1. "external_acl" can not use on tcp_outgoing_address. Because the<br>
> external_acl type is slow. My understanding is correct?<br>
<br>
<br>
Yes, your understanding is correct. There are cases where a slow ACL<br>
"usually works" with a tcp_outgoing_address directive due to ACL caching<br>
side effects, and there are many examples on the web abusing those side<br>
effects, but you should not rely on such accidents when using modern<br>
Squid versions.<br>
<br>
<br>
> 2. If yes, how to solve my requirement?<br>
<br>
Use an annotation approach instead. The "note" ACL is fast, and the<br>
external ACL helper can annotate transactions (and connections) in<br>
modern Squids. The only difficulty with this approach is to find a<br>
directive that satisfies all of the conditions below:<br>
<br>
1. supports slow ACLs<br>
2. evaluated after the info needed by the external ACL helper is known<br>
3. evaluated before tcp_outgoing_address<br>
<br>
In many cases, http_access is such a directive, but YMMV.<br>
<br>
<br>
HTH,<br>
<br>
Alex.<br>
P.S. FWIW, I can agree with one Eliezer statement on this thread: This<br>
thread belongs to squid-users, not squid-dev.<br>
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</blockquote>
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