Backup Exec Fail to authenticate

i have Backup Exec 2010R3, installed on Win2003R2. it was working fine for many months but recently we added one firewall to protect our serevrs. now server starts job normally but when verifying faild... any help plz.......
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itubafAsked:
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Syed_M_UsmanSystem AdministratorCommented:
please try atatched
backup-exec-fw.png

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itubafAuthor Commented:
Thanks for your quick responce....
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