Put the below line in bold
vi /etc/asterisk/manager.conf
[phpagi]
secret = phpagi
read = call,all
deny=0.0.0.0/0.0.0.0
permit=127.0.0.1/255.255.255.0
read = system,call,log,verbose,command,agent,user
write = all,system,call,log,verbose,command,originate,agent,user
displayconnects = no