How to allow only one source IP in NAT configuration
I have a computer with static IP which I want to access from outside network remotely, in order to test it I have configured NAT and allowed only one IP (Static Ip) and it is working fine, same I want to do this for dynamic IP as I have modem which don't have static Ip address then how to overcome from this issue.
Add an IP alias in Firewall > Aliases (here you may also use FQDNs) and use this alias in the (NAT) rule.
Dear viragomann , thanks for your reply, as you know that My ISP provide me dynamic IP and it's ip changing frequently then how can I create a alias with IP please guide
You want to allow a port forward from a single source IP address but that source IP address is always changing?
You might be able to get there with a dynamic DNS entry and an alias populated by that FQDN. I don't know how often pfSense updates its FQDN aliases but having it do it often enough to make that work seems pretty ham-fisted.
Use an OpenVPN remote access server instead.
Thanks for your advice, I will try it.