ports

Atleast 25 Ports need to be open for data transfer bet ween remote machines.

ref to the below article about the Port requirements:

What TCP/UDP ports does Backup Exec for Windows Servers 11d and above (including CPS - Continuous Protection Server and DLO - Desktop & Laptop Option) and Backup Exec System Recovery (BESR) use

http://www.symantec.com/docs/TECH49563

Using Backup Exec with firewalls

http://www.symantec.com/docs/HOWTO11730
 

burt only 13782 port is open n m able to take backup

how???

Port 13782 is used by Netbackup bpcd, are you using BE or NBU?