ZTNA on Sophos Firewall

I tried the ZTNA eap which I was impressed with especially in conjunction with Sophos Firewall, But I wondered if Sophos firewall has the agent built in now, couldn't ZTNA be provided free of charge??  Just Im now priced out of the Central ZTNA and have moved to Microsoft Global Secure Access which is excellent FYI

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[edited by: Raphael Alganes at 11:31 AM (GMT -7) on 9 May 2024]