Extension fake connections

Asterisk Asterisk SIP
1

Good morning, I’m having trouble with asterisk, where it tries to connect extensions to a context. What is it? IPBX has no route to the internet. Is it possible to see where this request is coming from?

[Jan 18 11:28:31] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1617’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:32] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1212’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:33] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1824’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:35] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1613’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:35] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1410’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:37] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1851’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:37] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1831’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:38] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1855’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:38] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1812’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:40] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1829’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:40] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1121’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:41] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1112’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:41] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1517’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:43] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1103’ to extension ‘00970595042104’ rejected because extension not found.
[Jan 18 11:28:43] NOTICE[2015]: chan_sip.c:15765 handle_request_invite: Call from ‘1902’ to extension ‘00970595042104’ rejected because extension not found.

2

sip set debug on and trace the invite for those calls you will get the source IP for the originator of those calls, The the “Contact” header field will provides such information