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  • block https traffic using isa 2004

    Hi ,

    We are using Windows server 2008 R2 Edition and Isa server 2004 system . Now i am able to block normal http sites using firewall policy inside isa but when i am trying to block https sites its not working.


    I can block www.youtube.com using domain name sets *.youtube but in that case my users are starting opening https://www.youtube.com . I have also made one url set and manually block https://www.youtube.com but still its opening....so can anyone suggest me the way to block https sites using isa server 2004. In my all client machine , we are using webproxy address ...server ip , 8080...

    please help...

    Thanks....

  • #2
    Re: block https traffic using isa 2004

    You block by protocol, which means the rule which blocks std web pages blocks traffic to port 80, and https rules will block traffic to port 443.
    *RicklesP*
    MSCA (2003/XP), Security+, CCNA

    ** Remember: credit where credit is due, and reputation points as appropriate **

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    • #3
      Re: block https traffic using isa 2004

      Hi ,

      Thanks for your reply...

      I already made 2 rules...one is domain name sets inside this i enter the name like this..*.youtube.com *.youtube*.com/*

      and made one url set ...http://www.youtube.com and https://www.youtube.com

      and also made one separate rule for blocking all http and https communication to this 2 sets ...even though its opening ...so what will be the way to block..https://www.youtube.com....do i need to check ip by ip for this site and block it...or is their any other solution...please help...

      Thanks...

      Comment


      • #4
        Re: block https traffic using isa 2004

        Fundamentally ISA Server has never really been very good at this, generally because most websites you would want to block use so many different URLs and protocols. It's also very hard to maintain the URL Sets as they do not dynamically update, and for your tech savvy users proxy bypass websites popup all the time.

        With ISA Server I've used Surf Control in the past, which is a paid for add-on. I don't recall it being cheap though, and it was ISA 2006 - whether it works in ISA 2004 or not I don't know.

        In the past I would have recommended replacing your ISA 2004 Server with Forefront TMG 2010, which has built-in Web Protection (as a subscription service) but as that product is also now discontinued I'd suggest it's time to replace ISA with a new edge device which includes all the features you want.

        Sophos have a UTM product which is getting some good reviews and can be installed in a VM, Watchguard have Web Protection built in to pretty much all of their firewalls and so do most vendors or there're other options like a Squid proxy.
        BSc, MCSA: Server 2008, MCSE, MCSA: Messaging, MCTS
        sigpic
        Cruachan's Blog

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        • #5
          Re: block https traffic using isa 2004

          Hi ,

          I have search for all ip for youtube using nslookup , I have tried to block all the ip for youtube.com , even though i am able to surf https://www.youtube.com , so can anyone provide me some solution for this . There must be some way to block sites...but i think , i am missing somethig....so can anyone explore that particular things...


          I made url set like this for all ip

          http://74.125.236.101
          http://74.125.236.99

          so is it the correct way or do i need to add only ip in a url set...

          please help...

          Thanks...

          Comment


          • #6
            Re: block https traffic using isa 2004

            Hi ,

            Is it possible with ISA Server 2006 Server or TMG 2010 Server.

            Thanks...

            Comment


            • #7
              Re: block https traffic using isa 2004

              Originally posted by kathy View Post
              Hi ,

              Is it possible with ISA Server 2006 Server or TMG 2010 Server.

              Thanks...
              Did you read my post? Already answered.
              BSc, MCSA: Server 2008, MCSE, MCSA: Messaging, MCTS
              sigpic
              Cruachan's Blog

              Comment


              • #8
                Re: block https traffic using isa 2004

                Hi ,

                ok..so with isa server 2004 its not possible at all ...anyway i tried to search for the download of TMG 2010 but its a strange ..its not available on microsoft.com , here is the link i get when i tried to search...

                http://search.microsoft.com/en-us/downloadresults.aspx?q=forefront%20tmg&ftapplicabl eproducts=^Servers

                http://www.microsoft.com/en-us/downl....aspx?id=14238

                http://www.microsoft.com/404.htm

                so can anyone provide me the link to download the english version of tmg 2010

                Also is there any other software anyone can suggest which can just provide website blocking and reports for corporate network..free or chargeable...

                Thanks.

                Comment


                • #9
                  Re: block https traffic using isa 2004

                  It has been stated that TMG2010 is now discontinued -- it may still be on TechNet (there is a lot of older software there) but you will not be able to buy it for operational use.
                  Tom Jones
                  MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
                  PhD, MSc, FIAP, MIITT
                  IT Trainer / Consultant
                  Ossian Ltd
                  Scotland

                  ** Remember to give credit where credit is due and leave reputation points where appropriate **

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                  • #10
                    Re: block https traffic using isa 2004

                    Hi ,

                    Can i download the testing version or evaluation version from technet ,please provide me the url ...Also which will be the next product available if TMG 2010 is discontinue from Microsoft ...

                    Thanks

                    Comment


                    • #11
                      Re: block https traffic using isa 2004

                      Please do a bit of research yourself -- is a good starting point

                      1) IF you have a TechNet subscription you MAY be able to download TMG2010 but you will not repeat NOT be licensed to use it in a production environment. The URL is TechNet.microsoft.com - logon and go to downloads.

                      2) Microsoft have dropped TMG and do not repeat NOT have a replacement for it. Other products exist -- read Cruachan's first post slowly and you may find some.
                      Tom Jones
                      MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
                      PhD, MSc, FIAP, MIITT
                      IT Trainer / Consultant
                      Ossian Ltd
                      Scotland

                      ** Remember to give credit where credit is due and leave reputation points where appropriate **

                      Comment


                      • #12
                        Re: block https traffic using isa 2004

                        smoothwall or EFW will do exactly what your asking... its free, its supported, and it works.

                        you can install it as a virtual in ESX and have it up and running in 15 minutes to half an hour. it supports VPN, URL filtering, squid, content filtering, keyword, integrates with AD/ldap, yada yada...


                        i dont like using ISA for restricting content. too involved and not really a good solution when there are a limited number of servers in your domain unless you want it on your DC i guess some do it with SBS, but i dont prefer that arrangement if i can help it.
                        its easier to beg forgiveness than ask permission.
                        Give karma where karma is due...

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                        • #13
                          Re: block https traffic using isa 2004

                          Hi,

                          Not sure if this will help any, but I am pretty new to this forum and thought I would throw this out there.

                          I ran across the same problem - users using HTTPS to bypass internet filters.

                          What I did - setup a Squid proxy box (on a old server).

                          Basic steps:
                          • install ubuntu or whatever flavor of linux you like (I used desktop just because I occasionally want a GUI)
                          • install squid3 (latest version) and webmin.
                          • configure squid module in webmin (multiple examples out there)
                          • make a blacklist on the squid module
                          • test it
                          • create an OU - put all the users you want filtered in it.
                          • GPO - set IE to use the squid box as a proxy
                          • GPO - hide the CONNECTIONS tab in INTERNET OPTIONS of IE

                          You now have a web filter that blocks regardless of http or https - and users are forced to go through the proxy.



                          I get logs of all webpages loaded and can update the blocklist with whatever I want.


                          Rob

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                          • #14
                            Re: block https traffic using isa 2004

                            Hi ,

                            Thanks Rob and James ,

                            Rob ,

                            Can you please provide me the url about setting up squid in steps , actually i was using it but long time back , also how to set webmin ..Do webmin and squid work in a GUI Mode ...



                            Thanks,

                            Kathy

                            Comment


                            • #15
                              Re: block https traffic using isa 2004

                              Hi Kathy,

                              webmin - http://www.webmin.com/

                              squid - http://www.squid-cache.org/

                              Webmin is a GUI (run through a browser) to manage Linux servers. Squid is a proxy server that can be managed with webmin.

                              I am in the process of replacing my physical squid/webmin boxes with virtualized ones (using virtualbox). If you can hold tight for a bit, I will get a setup guide together and post.

                              Thanks,
                              Rob

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