Hello, I continued to see this errors in the logs:
[2015-12-02 10:05:57] NOTICE: chan_sip.c:23277
handle_request_invite: Failed to authenticate device
how do I guard against this kinds of attacks? Also, to get the IP
address from where this attack come from I use the following command
“tcpdump -lni eth0 -f “udp port 5060” is there an easy way to get the attacker’s IP?