> sip show peers
Name/username              Host            Dyn Nat ACL Port     Status
0 sip peers [Monitored: 0 online, 0 offline Unmonitored: 0 online, 0 offline]
  == Parsing '/etc/asterisk/manager.conf': Found
  == Parsing '/etc/asterisk/manager.d/op-panel.conf': Found
  == Parsing '/etc/asterisk/users.conf': Found
[Mar 20 16:14:25] NOTICE[7268]: manager.c:1015 authenticate: 127.0.0.1 tried to authenticate with nonexistent user 'admin'
  == Connect attempt from '127.0.0.1' unable to authenticate