Please advise below.
For 1, do you mean you want to purchase a device which are "switch modem firewall"?
If yes, please advise the reason.
For 2, could you provide more detials about this? Please be noted that “work from outside network” is not allowed, AFSA only can be used in internal network.
For 3 and 4, please also advise more details or your purpose about that.
Thanks.