Possible to block certain websites using URL ?

dr_tech

I am aware that most websites today use some form of proxy / load balancer / CDN, so is it possible (without using any specific packages) to block certain websites using just their URL ?

I earlier had a Sophos Web Appliance, and it successfully blocked all connections to a certain domain name, just by listing the domains in the blacklist section, is something similar possible in pfSense too ?

(I know squidguard is an option).

DaddyGo

@dr_tech said in Possible to block certain websites using URL ?:

is something similar possible in pfSense too ?

Hi Doctor,

Yes it is possible, it has several forms.
Squid proxy, although this can be a bit cumbersome.
The pfBlockerNG -devel with your own DNSBL list....

I suggest the latter solution, if you have your own idea of the sites to be blocked, if you want to block Youtube, FB, etc. then openappid + snort can also be a solution.

+++edit:
The https + MITM part of Squid require advanced training and can be difficult to make it work properly

dr_tech

@DaddyGo said in Possible to block certain websites using URL ?:

The pfBlockerNG -devel with your own DNSBL list

Thanks, I'll try that out !

I have earlier used Squid with a certificate from my own CA, but if someone brings over a new device which does not trust my root CA, it throws off warnings, which is quite a nuisance to explain to each new user / guest.

dr_tech

@DaddyGo
So I've successfully setup pfBlockerNG and it is indeed blocking the websites I need to filter.

However, I need that some whitelisted IPs should be able to access all websites, bypassing pfBlockerNG in some way. Is such a provision available ?

https://forum.netgate.com/topic/129365/bypassing-dnsbl-for-specific-ips/58

DaddyGo

@dr_tech said in Possible to block certain websites using URL ?:

Is such a provision available ?

Yes, I thought pfBlockerNG would be a good solution.
See the answer to your question at the attached link:
https://forum.netgate.com/topic/138029/acl-s-support

In particular, focus on the recommendation of @BBcan177 (maintainer and creator of pfBlockerNG)