We used the product as a VPN for remote users. We are a small office with a single server (HP Proliant 360p) environment running Windows Server 2019 and previously employed the use of a SonicWall TZ500 as our firewall.
We had, at most, three remote users and six office users connecting at any given point in time. NetExtender was the VPN solution provided by SonicWall. The setup for Net Extender was tempermental (it had issues connecting to LDAP for authentication) and the overall experience was a nightmare. We ended up switching to another provider for our firewall and VPN.