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Firefox getting around a router ACL

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I am trying to block Facebook on my network. I have a Linksys router (E2000) and have setup an ACL to block the URL. It works fine with IE, but Firefox somehow works around the ACL. Any ideas?

I am trying to block Facebook on my network. I have a Linksys router (E2000) and have setup an ACL to block the URL. It works fine with IE, but Firefox somehow works around the ACL. Any ideas?

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jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
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Do you have a proxy set in Firefox? You could check here:

orange Firefox button or classic Tools menu > Options > Advanced > Network

Click the Settings button and try No Proxy.

Does that make any difference? (I'm not sure whether that takes effect immediately or requires a restart of Firefox.)

In addition to a proxy set through the settings, you might have an add-on that changes your routing, such as TOR. Presumably you would be aware of that...

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campagnollo Utente che ha posto la domanda
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Sorry, proxy setting is already off and there is no TOR here.

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
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Are both Firefox and IE using the same protocol when accessing Facebook (http / https)?

Does your router log show Firefox using a different port number or a URL that is different in some other way?