@yzahn Yes, Thanks for your help. I have seen quite a few VPN workarounds on github, I was hoping there would be other Netfree users with experience with WSL2. Netfree seems to be the only filter which support anything remotely linux related.
By the way if I could use VPN credentials in a router what prevents a user from connecting hundreds or thousands of devices through such a method and completely overwhelming Netfree's servers?

@yzahn I have done so. I was trying to log in using the same details I use for the forum, now I realise I have to create an account for the wiki separately.

@pdavidow
WiFree is installed and running within Windows and can therefore not intercept internet traffic from another hypervisor dom or VM. As this is a public forum I do not want to provide further details about ways WiFree may be circumvented.
The NetFree wiki recommends locking the BIOS to increase protection https://netfree.link/wiki/Strengthen_WiFree_protection. If virtualisation technologies (VT-x/AMD-V) are disabled in the BIOS and the BIOS has been locked it will not be possible to circumvent WiFree using WSL. This will prevent WSL2 from working, but WSL1 should still work fine.
@yzahn Who has permission access to modify the wiki? Perhaps disabling virtualisation technologies (VT-x/AMD-V) should be added to the wiki page https://netfree.link/wiki/Strengthen_WiFree_protection?

@mz-w No because it will make legitimately important requests take longer to be checked

@n_נתי Many of the radio stations are unlocked, ask the support team if the radio uses http (unencrypted connection), or if it uses https but they have a way of adding a CA security certificate.

@joel6147 This site simplex3d.co.il was mentioned on the Hebrew forum as a possible alternative. I have no experience myself though.

@mz-w No because it will make legitimately important requests take longer to be checked

@byk I believe if you use the VPN client built into the chromebook not an Android app, and set policies always on VPN and block traffic without VPN you will not have the 2 issues. To use the built in client save the following to a .onc file.

{
  "Type": "UnencryptedConfiguration",
  "Certificates": [
    {
      "GUID": "{13f7eba5-06b4-4beb-87d1-78a7323ff072}",
      "Type": "Authority",
      "X509": "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"
    }
  ],
  "NetworkConfigurations": [
    {
      "GUID": "{995aea54-25d8-4570-a23d-5873b63259f5}",
      "Name": "Netfree Israel",
      "Type": "VPN",
      "VPN": {
        "Type": "OpenVPN",
        "Host": "s.il1.nfaw.netfree.link",
        "OpenVPN": {
          "Port": 143,
          "UserAuthenticationType": "Password",
          "CompLZO": "true",
          "SaveCredentials": true,
          "Proto": "tcp",
          "ServerCARefs": [
            "{13f7eba5-06b4-4beb-87d1-78a7323ff072}"
          ],
          "ClientCertType": "None"
        }
      }
    }
  ]
}

However you actually connect to Netfree, VPN, HTTP Proxy or any other method Chrome OS can still not be fully supported by Netfree, as Google require that their domains are fully excluded from all ssl/tls inspection. Ca-certificated can only be installed in the browser, not the OS even when using Google Admin. See https://support.google.com/chrome/a/answer/6334001?hl=en&ref_topic=3504941.

@unclebenjy This is not a loophole in Netfree, Netfree provide internet filtering not email checking.
You should block the sender from sending you more emails by clicking on settings cog in top right > see all settings > Filters and blocked addresses > Create a new filter then type senders email address in from box and click create filter > tick the box for Delete it and click create filter. (Creating a filter like this is better than using the block feature because blocked emails still come through to spam).
If the email is sent from a Gmail account you should report it to Google so the account is closed using this form: https://support.google.com/mail/contact/abuse?hl=en.

@pdavidow Before I joined I asked about some sites, you could make an account with no filtering plans for free to send support requests. Without points they do take some time to reply and they won't review a new site but as this is a site they have reviewed before they should be able to advise you if they can open it for a single user. If they could open it they usually ask why you need it open and may even request a CV or other evidence that it is for parnasah before doing so.

@pdavidow If you use a desktop using NetFree on your ISP should be safe and protect you in both in Windows and WSL2 as long as you can't connect to a neighbour's wifi or tether from your phone etc.
Remember you will have to install the SSL certificate in each WSL instance using the Linux command as the Windows install won't do this for you.

@yzahn I have done so. I was trying to log in using the same details I use for the forum, now I realise I have to create an account for the wiki separately.

@pdavidow
WiFree is installed and running within Windows and can therefore not intercept internet traffic from another hypervisor dom or VM. As this is a public forum I do not want to provide further details about ways WiFree may be circumvented.
The NetFree wiki recommends locking the BIOS to increase protection https://netfree.link/wiki/Strengthen_WiFree_protection. If virtualisation technologies (VT-x/AMD-V) are disabled in the BIOS and the BIOS has been locked it will not be possible to circumvent WiFree using WSL. This will prevent WSL2 from working, but WSL1 should still work fine.
@yzahn Who has permission access to modify the wiki? Perhaps disabling virtualisation technologies (VT-x/AMD-V) should be added to the wiki page https://netfree.link/wiki/Strengthen_WiFree_protection?