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    SSL Man In the Middle Filtering blocking slack bbm skype

    Scheduled Pinned Locked Moved General pfSense Questions
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    • K
      kirbyandlouie
      last edited by

      Hi. I enabled SSL Man In the Middle Filtering to have https sites blocked in my pfsense squid proxy server settings. I included "slack.com" to the domains to be whitelisted. I did also put other related urls for slack such as slack-files.com, slack-edge.com, slack-msgs.com etc. into our whitelist target settings, as mentioned to what was suggested in the slack help page. But slack still retries to connect.

      I am able to access and login to slack.com via browser and app, but after signing in, the retrying to connect issue pops up. this type of issue also happens to bbm.com and skype.com. It seems that it is blocking personal messaging of messenger type apps. I hope I can find help how to resolve this issue.

      Hoping you can help or share insights on how we can make this worked.

      1 Reply Last reply Reply Quote 0
      • K
        kirbyandlouie
        last edited by

        If I am not mistaken, Squid Proxy server does not seem to allow persistent websocket traffic, that is why slack that uses webSockets, a persistent, always-open connection don't seem to work.
        Anyone had the same issue? kindly share how did you fixed it..

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        • B
          babujayaraj
          last edited by

          Hi, I am also facing the same issue did got the fix for the same?, if yes please share that solution..  :)

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          • H
            heper
            last edited by

            perhaps you could try to use the 'bypass' instead of the whitelist

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            • B
              babujayaraj
              last edited by

              Yes, I already Tried, that is the another terrible problem i faced when i am troubleshooting when i am adding slack-core.com URL to the bypass the webfiltering is completely stopping The SquidGuard won't blocks URLs anymore.

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              • B
                babujayaraj
                last edited by

                @kirbyandlouie if you got the solution please share.

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                • K
                  kirbyandlouie
                  last edited by

                  Sorry babujayaraj, I haven't found a solution on this. I am also waiting for inputs..

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                  • B
                    brizzz
                    last edited by

                    I have same problem, not work websocket connection on 443.
                    Web site https://web.whatsapp.com/ not load all parts…

                    I tested also with http://websocketstest.com/, this are results:

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                    • K
                      kirbyandlouie
                      last edited by

                      Still facing this issue till now after upgrading to pfsense ver. 2.4.0-RELEASE. I hope they'll be able to address this, if anyone was able to make this work kindly please share what you did..

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                      • R
                        rynym
                        last edited by

                        Also encountering the issue. Decided to just let go and set SSL/MITM Mode to Splice All for now..

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