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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hey Sergio,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>There are couple approaches to content filtering in the Linux world and in other spaces.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Squid is open source and gives a lot but there are other ideas and ways to perform content filtering.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Squid was designed for caching and does things in a specific way while other solution might give a feature that would work "without interception".<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>On http it is doable to perform filtering in a very efficient way that is similar to Squid's PEEK and SPLICE but there is a need in some level of Interception in one step or another to perform the actual "block" operation.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I do not know about Open Source products that offers everything and it is very simple to understand why.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>What I know about are <o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Squid + external tools(such as SquidGuard, ufdbguard, others)<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ntop layer 7 filtering<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Custom DPI iptables modules<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>NFQUEUE based IPS\IDS which can act as a url filtering engine<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Consider that if you require only filtering and not caching then you can get very high performance from many applications.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The fact that Squid was designed for Caching doesn't mean that you need to use it.<br>Also there are couple cases which caching will hold your line and users speed.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The best case scenario would be to not Intercept the traffic into squid while in many cases it is not possible.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Eliezer<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial Rounded MT Bold","sans-serif";color:#1F497D'>----<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial Rounded MT Bold","sans-serif";color:#1F497D'><a href="http://ngtech.co.il/lmgtfy/"><span style='color:#0563C1'>Eliezer Croitoru</span></a><br>Linux System Administrator<br>Mobile: +972-5-28704261<br>Email: eliezer@ngtech.co.il<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><img border=0 width=183 height=69 id="Picture_x0020_1" src="cid:image003.png@01D1C1EB.8E4E8180"><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> squid-users [mailto:squid-users-bounces@lists.squid-cache.org] <b>On Behalf Of </b>Sergio Belkin<br><b>Sent:</b> Wednesday, June 8, 2016 11:06 PM<br><b>To:</b> Squid Users<br><b>Subject:</b> [squid-users] Somewhat OT: Content Filter with https<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Hi,<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>I've been using a few years ago squid+dansguardian. But nowadays, DG is not maintained anymore. I know that exists squidGuard, ufdbGuard, and e2guardian.<o:p></o:p></p></div><p class=MsoNormal>Features should be:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>- Blocking https url's<o:p></o:p></p></div><p class=MsoNormal>- Not need of interception..... is that possible?<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>- Simple for configure and good perfomance<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>What do you recommend me?<o:p></o:p></p></div><p class=MsoNormal>Thanks in advance!<br clear=all><o:p></o:p></p><div><div><div><div><div><div><div><div><div><div><div><div><div><p class=MsoNormal><br>-- <o:p></o:p></p><div><div><div><div><p class=MsoNormal>--<br>Sergio Belkin<br>LPIC-2 Certified - <a href="http://www.lpi.org" target="_blank">http://www.lpi.org</a><o:p></o:p></p></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></body></html>