Thank you for the quick answer.
1. it's option it's out of the qestion due to have only one policy set up "from trust to untrust" internal ip to public ip.
"Juniper it's being reset to default status"
2. There is no any other firewalls. IT's basic thing Modem patch cable to juniper untrusted zone then from trusted zone patch cable to one laptop.
everything works perfect untill change of internal ip.
Network is public 65.65.65.65/24 let say and internal is 192.168.1.1/24
will upload file, if you would like to look at it.