Blocking Tor Browser

[tcannon777]

I have the parental control settings configured with the block proxy/VPN/Tor box checked. It seems that no longer blocks the Tor Browser unless it is using the default obfs4 bridge. When you change to any of the other bridges, the Tor Browser is not blocked by the router. Essentially, it makes this setting pretty useless right now. Let me know how to resolve this. Thanks!

[support]

@tcannon777 We’ll look into that. Thanks!

[support]

Our tests showed that the Tor browser gets a connection only when Amazon or Azure is selected. You need to block domains a0.awsstatic.com and ajax.aspnetcdn.com.

[tcannon777]

Ok, I will try that. I have also noticed that with this option selected I cannot use the call functionality within Microsoft Teams. Microsoft essentially uses their Skype technology for video calls within Teams so is there specific ports I need to open so the router will allow this? Basically, what happens is the call seems to connect for a few seconds, but then I get a network error message and it disconnects.

[support]

For Microsoft Teams call, you can check the Internet logs in raw format and see what’s blocked. Try white list the blocked sites.

[tcannon777]

Ok, which type of internet logs should I check? Is there some within the router admin?

[support]

Yes. In the Parental Control page, there’s a link named “View Logs”. Click that to get to the logs page, which displays the logs in two forms: chart or raw.

[tcannon777]

I have continued to troubleshoot this, but still cannot get the video or audio call function for Skype or Microsoft Teams to work. I have added all the urls from the Skype and Microsoft Teams section of the help document below to “Allowed URLs” and looked in the Logs as well to see if there any other’s when trying to connect a call, but don’t see any. I tried making multiple calls this morning (3/6/18) between 8:50am-9:10am Eastern Standard Time if you want to look at the logs. Are there any other ports or configuration changes that might fix this? Any help is greatly appreciated.

https://support.office.com/en-us/article/office-365-urls-and-ip-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2?ui=en-US&rs=en-US&ad=US#bkmk_lyo

[support]

@tcannon777 Before you add the white lists, did you see any blocked requests in the logs? And after you add the white lists, did you see the blocked requests go away?

[tcannon777]

Still trying to troubleshoot Microsoft Teams staying connected for meetings. So I have added the url skype.com to the Whitelist. Based on other responses I have seen in the support forum, I don’t need to use a wildcard (*) to allow other variations of skype.com. Can you confirm that is correct? Here are some of the urls I see in the logs that appear to still be blocked even though I have allowed skype.com

https://b-conv-usea2-01.conv.skype.com
https://b-cc-usea2-01.cc.skype.com
https://pipe.skype.com
https://c-broker-usea2-01.broker.skype.com
https://api.cc.skype.com
https://img.teams.skype.com

[support]

If you white list skype.com, all URLs you listed should be passing.

What are the reasons for blocking when you look at the logs?

[Casino]

I have the parental control settings configured with the block proxy/VPN/Tor box checked. It seems that no longer blocks the Tor Browser unless it is using the default obfs4 bridge. When you change to any of the other bridges, the Tor Browser is not blocked by the router. Essentially, it makes this setting pretty useless right now. Let me know how to resolve this. Thanks!

Can you explain me this? Is this a bug resolved in the newest updates? Thanks.

• This reply was modified 3 years, 10 months ago by Casino.

[support]

@casino The router takes a guess at whether TOR is being used. When TOR routes through Amazon or Azure, it is indistinguishable from normal HTTPS. Therefore, you need to black list the domains being used specifically.

[Casino]

Can you write me all the domains i have to block? Because if i block “ajax.aspnetcdn.com” the Microsoft website doesn’t work anymore.

[Casino]

???

[Author]

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