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How do you block "https" websites from being accessed?

Hi all,

We've set up a content filter on the router that disallows "https" websites from being accessed, but it isn't working. Users are able to visit websites such as Facebook by typing in "https://" before the address. The router is a Cisco rv042 router. Is there any way to block this access?

Network SecuritySecurityRouters

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8/22/2022 - Mon
Seth Simmons

did you try blocking port 443 entirely?

You can either block the known IPS on your firewall/router or can by a web filter device - they are usually now come with most devices as security add ons

i wouldn't block port 443 as this would then block other secure websites.
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William Peck

we only wish to block https://facebook.com. Is there any way to do just that?

yes....get there IP of the facebook websites and block traffic to and from in the firewall

facebook uses several IP addresses. we've tried blocking as many as we could but there are other ways that traffic is flowing.
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Why not just setup a content filter? I would use third party product content URL filtering. This kind of product has their own database that can block access based on category (social networking etc), port or even protocol.

madunix- do you know of any low-cost or free third party product content URL filtering systems for businesses to use?

I know OpenDNS is one, but we are looking for a solution that doesnt require us to forgo our current DNS servers.

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Thank you for that comprehensive list.
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