Hi,
I configure the URL filtering with the OPNSense tutorial : https://docs.opnsense.org/manual/how-tos/proxywebfilter.html
On the step 5, we enable a "declarative" proxy.
Is it possible to configure the URL filtering with transparent proxy ?
Thanks
Yes, just configure for transparent mode and set NAT rules for your clients as described.
https://docs.opnsense.org/manual/how-tos/proxytransparent.html
The filtering is the same as you already have (step 1, done!).
Cheers,
Franco