openSIPS, Limit invites to certain ip?

Question

if (method=="INVITE" && uri=~"NUMBER")
   {
       #rewriteuri("sip:+45NUMBER@voipXXX.opensips.local");
       rewritehost("voipXXX.opensips.local");
       t_relay();
       exit;

this is an example of how my openSIPS server handles invites, i want to make it so that i'm only able to accept invites from certain ips? do anyone know how this could be done.

this only takes into account which number is calling, not which ip its from

Answer 1

&& $si == '10.0.0.1'

http://www.opensips.org/Documentation/Script-CoreVar

Section 3.79

Answer 2

Instead of hardcoding the source IPs you want to allow, take a look at the PERMISSIONS module.

http://www.opensips.org/html/docs/modules/1.11.x/permissions.html

Especially take a look at the check_source_address command.

You may create a group and put inside all the authorized IPs. For example, if you created group 1, you can use this snippet in your script:

if(!check_source_address("1")) {
    send_reply("403","Forbidden");
    exit;
}