Hi,

In order to protect against scanning attacks I'd like for FS to not respond to INVITES unless they match certain conditions.

I understand that currently FS always responds with 100 Trying right away before processing the call and then, if the call does not match anything in the dialplan, responds with a 302 Moved Temporarily.

The 302 can be replaced with another response code (for example 403 Forbidden which is what I am doing now) using the respond dialplan app. However, that might encourage the scanner to keep trying.

So I guess there are two questions:

1. Is there a way not to send back 100 Trying at all?

2. Is there a way to not send any final response?