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    Squid proxy/url filtering and Office365 problems

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    • P
      prx
      last edited by prx

      Hi,

      I have the following problems with office365 and squid proxy/filtering: very often we have connectivity issues using office 365. In the logs of squid I have multiple 409 error code:

      06.11.2020 17:23:33 	192.168.27.44 	TAG_NONE/409 	outlook.office365.com:443 
      
      06.11.2020 17:17:51 	192.168.27.46 	TAG_NONE/409 	self.events.data.microsoft.com:443
      

      Could someone help me to solve the problem?

      Thank you very much

      PS: pfsense version is 2.4.4

      S 1 Reply Last reply Reply Quote 0
      • viktor_gV
        viktor_g Netgate
        last edited by

        You can create URL Table alias with the list of o365 addresses,
        see https://docs.microsoft.com/en-us/microsoft-365/enterprise/urls-and-ip-address-ranges?view=o365-worldwide
        JSON formatted list: https://endpoints.office.com/endpoints/worldwide?clientrequestid=b10c5ed1-bad1-445f-b386-b919946339a7

        then enable transparent proxy and add this list to the "Bypass Proxy for These Destination IPs" field

        1 Reply Last reply Reply Quote 1
        • S
          shawn8888 @prx
          last edited by

          @prx the 409 error is so annoying. I have the same issue here.
          I also created a new thread about it.

          https://forum.netgate.com/topic/159364/squid-squidguard-none-409-and-dns-issue/1

          1 Reply Last reply Reply Quote 1
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