Help captive portal from scratch ver 2.2.2

[mafiosa]

Help me setup captive portal using local database zone creation etc.My wan IP is static 172.16.34.254 Also help other related settings like DNS forwarder etc if needed

[chris4916]

1 - Providing your WAN IP (furthermore this IP being in the RFC1918 range, meaning not being your real external IP) is useless and not required
2 - With such question, the best you can get is pointer to documentation  ;)
3 - What's the point with DNS ?

[Gertjan]

@chris4916:

1 - Providing your WAN IP (furthermore this IP being in the RFC1918 range, meaning not being your real external IP) is useless and not required

Very true.
But be aware for that a new kind of user that exists: the one that checks

Block private networks
When set, this option blocks traffic from IP addresses that are reserved for private networks as per RFC 1918 (10/8, 172.16/12, 192.168/16) as well as loopback addresses (127/8).  You should generally leave this option turned on, unless your WAN network lies in such a private address space, too.

and
uses a IP WAN like 192.a.b.c (or 10.a.b.c) as WAN  ;D