sql server - Unable to telnet to SQL mirroring port on public IP on Azure ARM VM -

i trying mirror on premise sql database azure arm vms running sql server. 1 mirror , 1 witness. have setup mirroring end points on servers. however, getting error effect mirror server can not reached.

reading through net pages, tested port using telnet. able telnet mirroring port on local server azure vm unable telnet local server vms.

i able telnet on mirroring port between vms using private ip address unable using public ip address.

i have added port security group being used these vms allow inbound connections outbound connections.

i have tested server listening on ip 0.0.0.0 , mirroring port.

any appreciated.

for whatever worth, setting inbound connections source port range port going use mirroring. changed "*" , started working.