Nginx Lua DNSBL

DNSBL.conf

# Configuration
# --------------

# Comment the following line if you are not behind a proxy_pass or load balancer
set $dnsbl_clientip $remote_addr;

# Uncomment if the client IP is on X-Forwarded-For
#set $dnsbl_clientip $http_x_forwarded_for;

# Uncomment if you are using CloudFlare
#set $dnsbl_clientip $http_cf_connecting_ip;

# Insert your Project Honeypot Access-Key
set $dnsbl_httpbl_accesskey "abcdefghijkl";

# leave this empty
set $dnsblres "";

# --------------

rewrite_by_lua_block {
	local clientip = ngx.var.dnsbl_clientip

	local dnsblccval, dnsblccflag = ngx.shared.dnsblcache:get(clientip)
	if dnsblccval ~= nil then
		ngx.var.dnsblres = dnsblccval
		ngx.exit(ngx.HTTP_FORBIDDEN)
	end

	local dnsblserv = {
		["projecthoneypot"]={
			["accesskey"]=ngx.var.dnsbl_httpbl_accesskey,
			["host"]="dnsbl.httpbl.org"
		},
		["sorbs"]={
			["accesskey"]="",
			["host"]="dnsbl.sorbs.net"
		}
	}

	local resolver = require "resty.dns.resolver"
	local r, err = resolver:new {
		nameservers = {"8.8.8.8"},
		retrans = 1,
		timeout = 2000,
	}

	a,b,c,d = clientip:match("([%d]+).([%d]+).([%d]+).([%d]+)")
	ngx.say(a)

	for blserv,bltable in pairs(dnsblserv) do
		local accesskey = ""
		local dnsbltarget = ""
		for i,z in pairs(bltable) do
			if i == "accesskey" then
				if z ~= "" then
					accesskey = z.."."
				else
					accesskey = ""
				end
			end

			if i == "host" then
				dnsbltarget = z
			end
		end

		local dnsblhost = accesskey..d.."."..c.."."..b.."."..a.."."..dnsbltarget

		local answers, err, tries = r:query(dnsblhost, nil, {})

		if answers ~= nil then
			for ak,ans in ipairs(answers) do
				if ans.address ~= nil then
					e,f,g,h = ans.address:match("([%d]+).([%d]+).([%d]+).([%d]+)")
					if e == '127' then
						if tonumber(h) > 0 then
							ngx.var.dnsblres = ngx.var.dnsblres..blserv.."="..ans.address.." "
						end
					end
				end
			end
		end
	end

	if ngx.var.dnsblres ~= "" then
		ngx.shared.dnsblcache:safe_set(clientip, ngx.var.dnsblres, 86400)
		ngx.exit(ngx.HTTP_FORBIDDEN)
	else
		ngx.shared.dnsblcache:safe_set(clientip, ngx.var.dnsblres, 86400)
	end
}

more_set_headers "x-dnsbl: $dnsblres";

Hi man,

I use nginx ver 1.15.10 and install module to support Nginx-Lua and Restydns and nginx run perfectly, and i follow your article form this URL https://www.secjuice.com/dnsbl-blacklist-over-dns-how-to/ but i got an issue every acccess to the site i got forbidden even i access on my localhost, here are the information

And here information on nginx.conf

and here information my vhost

and here information module enable on nginx

I Setup DNSBL.conf set by default

if you dont mind to help this issue, thank you.