This is what I have tried and nothing worked. I'm not sure which interface I should use. ifconfig command shows ath0.1 with the ip I've given the PC. I've even tried using the MAC address that shows under Status >> LAN >> DCHP Clients. I've no idea how to use iptables properly.
Neither, I use SSH with a file manager like WinSCP or Midnight Commander.
Let me try to clear the confusion.
I have a USB enclosure connected to a Netgear R7800 router. Then enabled Core USB Support on Services >> USB.
No FTP, no Samba.
I can connect via SSH without any problems from the default vlan. I can also connect fine from the VAP but I would have to disable net isolation which I don't want to do. What is not allowing me to connect, I think, is the router's firewall. That's why I'm trying to get a rule added to iptables for this PC.
I haven't attempted FTP as it's not a setup I desire. I normally connect using SSH with firstname.lastname@example.org and then entering the password for the router. I would assume if SSH doesn't work from an isolated VAP, neither would FTP.
Perhaps you could shed some light as to why FTP would be any different.