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Sophos XG Firewall Web Filter

Hi.

We have a number of new Sophos XG Firewalls and we are experiencing issues with the Web Filtering aspect as in, it just will not work. 

Here is an example of a setup at one of our sites. At this site the below has been configured to allow a residents network with internet access. The devices that connect to this network are BYOD and we have no control over these. 

Zone = Resident LAN 

Zone Options Selected = DNS / Ping / Web Proxy 

Firewall Rule = Resident LAN Internet Access

Firewall Rule Details = 

> Source Zone: Resident LAN 

> Source Networks: Any 

> Destination Zones: WAN 

> Destination Networks: Any 

Security Features: Web FIltering : Policy No Explicit Content (I used this as an example - We have created our own policy which contains a large number of categories)

Selected Options within Web Filtering (I am not to sure if these are correct) 

Block QUIC Protocol - Selected

Scan HTTP and decrypt HPPS - Selected

Use Web Proxy instead of DPI Engine - Selected

Decrypt HTTPS during web proxy filtering - Selected


When I connect a PC to the Resident LAN and test a number of sites which I would assume would be blocked they load without an issue. I can see the sites in question are all HTTPS which is making me think the filter cannot determine its content.

I am not to sure where in the logs to look for this type of thing. It is key that I ensure the residents networks at each of our sites is well protected which I bleieve the Sophos XG could take care of quite easily so it may be something in the configuration I have setup wrong or there may be a better way to do this. 

Any advice would be greatly apprecaited. 

Many thanks, Dan Hargrove



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  • Hi Ian. 

    Many thanks for your response. 

    I have now got it to a point through trial and error if it appearing to block the sites. As we have no control of the resident devices I cannot install the CA Cert so it has been matter of working out what to have enabled and what not to. The issue I am not experiensing is accessing websites is very slow which I assume is the web filter checking what is wanting to be loaded. Do you have any recoomendations for best practise when setting up in this way? 

    Many thanks, Dan