I implemented secfilter in a simple way, in first step routing put that conditional for black list check that already works:

```
        secf_check_ip();
        if ($? == -2) {
                xlog("L_ALERT", "$rm from $si is blacklisted");
                drop();
        }

```

BUT NOW i want to change to whitelick checks, so i reviewed the docs and "2" is resulting for whitelist, so then i said "if not whitelisted so block" using "!= 2" as on https://www.kamailio.org/wiki/cookbooks/5.3.x/core#operators BUT SEEMS DOES NOT WORK: that is the code:

```
        secf_check_ip();
        if ($? != 2) {
                xlog("L_ALERT", "$rm from $si is not in whitelist, block");
                drop();
        }

```

when i tested all the calls passed not matter if are in the table or not as whitelist!

I want able to call only if are present and whitelisted the ip address.. so i also tested with:

```
        secf_check_ip();
        if ($? == 0) {
                xlog("L_ALERT", "$rm from $si is not present, so block");
                drop();
        }

```