Using ZTE MF275R as a modem with external router


Hi I'm totally new to this type of forum.  Hope someone can help me.

Have a ZTE MF275 smart hub and service is very good compared to my previous ISPs.  However I am thinking of installing an external router (something like a Linksys 3200) and installing a vpn to handle all my traffic (am getting somewhat paranoid about extra security).

Have researched quite a bit and understand that there maybe be some issues unless modifications are made to the smart hub settings.

Found a forum from Rogers but wondered if any Telus customer has tried this and has a solution