We want to create a NAT based port forward rule, but only have it work remotely at certain times of the day.
We want to forward a port internally, but need to be able to control the times the port forward is working.
I suspect there are some customized iptable rules which can control this behaviour.
The rules would be coming from a static IP address and port forwarding say 3391 to 3389 locally
SG580 device is running firmware 3.2.2
This gets a bit complex.
You would need to hand write port forward rules as well as the appropiate firewall rules.
There are a number of good internet resources on creating rules.
KB article KB63846 has an example of some time based rules to give you an idea of what is involved.