# Someone is trying to make calls without being registered

**URL:** <https://community.asterisk.org/t/someone-is-trying-to-make-calls-without-being-registered/41742>\
**Category:** Asterisk Support\
**Created:** [January 31, 2013, 4:28pm UTC](https://community.asterisk.org/t/someone-is-trying-to-make-calls-without-being-registered/41742 "2013-01-31T16:28:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cometogether](https://avatars.discourse-cdn.com/v4/letter/c/f04885/32.png) [@cometogether](https://community.asterisk.org/u/cometogether)\
**Post date:** [January 31, 2013, 4:28pm UTC](https://community.asterisk.org/t/someone-is-trying-to-make-calls-without-being-registered/41742/1 "2013-01-31T16:28:06Z")

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I have this showing up periodically in my logs (never the same IP)

`[Jan 31 10:43:04] NOTICE[10347][C-0000002e]: chan_sip.c:25108 handle_request_invite: Call from '' (176.58.73.167:10120) to extension '00972592573636' rejected because extension not found in context 'unauthenticated'.
  == Using SIP RTP CoS mark 5
[Jan 31 10:43:04] NOTICE[10347][C-0000002f]: chan_sip.c:25108 handle_request_invite: Call from '' (176.58.73.167:10827) to extension '011972592573636' rejected because extension not found in context 'unauthenticated'.
  == Using SIP RTP CoS mark 5
[Jan 31 10:43:05] NOTICE[10347][C-00000030]: chan_sip.c:25108 handle_request_invite: Call from '' (176.58.73.167:10123) to extension '810972592573636' rejected because extension not found in context 'unauthenticated'.
  == Using SIP RTP CoS mark 5
[Jan 31 10:43:05] NOTICE[10347][C-00000031]: chan_sip.c:25108 handle_request_invite: Call from '' (176.58.73.167:10123) to extension '0011972592573636' rejected because extension not found in context 'unauthenticated'.
  == Using SIP RTP CoS mark 5
[Jan 31 10:43:05] NOTICE[10347][C-00000032]: chan_sip.c:25108 handle_request_invite: Call from '' (176.58.73.167:10121) to extension '900972592573636' rejected because extension not found in context 'unauthenticated'.
  == Using SIP RTP CoS mark 5
[Jan 31 10:43:06] NOTICE[10347][C-00000033]: chan_sip.c:25108 handle_request_invite: Call from '' (176.58.73.167:10121) to extension '800972592573636' rejected because extension not found in context 'unauthenticated'.
`

I guess this is someone poking my PBX trying to see if they can place calls to what seems to be a mobile number in Israel.

Did I misconfigure something for this to happen or is it normal behaviour?

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<div class="post-metadata">

**Author:** ![navaismo](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/navaismo/32/2481_2.png) [@navaismo](https://community.asterisk.org/u/navaismo)\
**Post date:** [January 31, 2013, 6:05pm UTC](https://community.asterisk.org/t/someone-is-trying-to-make-calls-without-being-registered/41742/2 "2013-01-31T18:05:19Z")

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Yes you don’t secure your Box.

Close external ports if you don’t need it.  
Set allowguest=no  
Use a blocking tool like fail2ban or blockhost.

Read the best practice TXT in the asterisk source directory.