CrowdSec•4w ago

Use of nginx variables with AppSec

Hello, do you have any practical examples on how to utilize these? https://docs.crowdsec.net/u/bouncers/openresty#nginx-variables I tried setting for example within a specific location in my openresty config. But it does not disable appsec (still getting banned) - Maybe i have gotten this wrong? set $disable_appsec 1 cs-openresty-bouncer = v1.1.1 crowdsec = v1.7.0 And also, if i were to change this value dynamically based on conditions, in what lua directive will this variable be evaluated?

OpenResty | CrowdSec

📚 Documentation

3 Replies

CrowdSec•4w ago

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blotus•4w ago

it's an issue in the documentation, the correct variable is crowdsec_disable_appsec

vedtotoOP•4w ago

Ah ok, still not getting it to work. But i will keep trying.. Not sure how it's supposed to work. Appsec is initialized in the http directive and this variable needs to be declared within server/location/if directive. I guess some further evaluation is done behind the scenes? That was on me, we use different path for openresty. So i still used the old lua libs for openresty bouncer :) I was able to declare it in my openresty conf and then use it in lua code like this.. if anyone else is interested. Very nice improvement!

access_by_lua_block {

        local wafwl = require "wafwl"
        local http_host = ngx.var.http_host

        if wafwl.is_whitelisted() then

                ngx.log(ngx.ERR,"Crowdsec-WAF is disabled for this domain - not evaluating request: " .. http_host)
                ngx.var.crowdsec_disable_appsec = 1

        end
}

access_by_lua_block {

        local wafwl = require "wafwl"
        local http_host = ngx.var.http_host

        if wafwl.is_whitelisted() then

                ngx.log(ngx.ERR,"Crowdsec-WAF is disabled for this domain - not evaluating request: " .. http_host)
                ngx.var.crowdsec_disable_appsec = 1

        end
}

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Use of nginx variables with AppSec

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