How often do people try to hack your switch?

Hello,

I’m new here. I have a 10.0 install on a well known hosting platform. I randomly checked /var/log/asterisk/messages today and saw lots of failed login attempts. The extensions would increment, eg: ab, ac, ad, or phone1, phone2, phone3.

There are also a few failed calls from extension ‘’. I didn’t know I had a blank extension. The calls are to the Palestinian Authority and the UK. This is frightening because it appears a stranger was able to register somehow. I checked /var/log/asterisk/cdr-csv/Master.csv and the only completed calls on record are my own.

Obviously, I have turned Asterisk off for now. Should I worry? I checked my bandwith usage and it looks normal (quite low). Any tips? Feeling nervous. Thank you in advance.

S

blogs.digium.com/2009/03/28/sip-security/