Hi, i have a zone - guestwifi set up within the firewall section.

I'm looking to set up the following within Luci and I presume this will need to be achieved through custom rules?

---All Applied Only to Guest Wifi-----

1) Redirect port 80 requests to 192.168.1.137

2) reject port 443 requests not destined for 192.168.1.137

How do I go about this please?

Thanks.

1) You might find kmod-ipt-nat-extra to be useful. It supports the iptables target REDIRECT
2) Set up two rules in the chain. The first rule accepts traffic on tcp/443 to host 192.168.1.137. The second rule denies all traffic on tcp/443. Any traffic on tcp/443 to 192.168.1.137 will trigger the first rule, any traffic on tcp/443 to anywhere else will skip past the first rule and trigger the second rule.