Firewall issue with KMS Server

Hi All,

I have KMS Server with windows server 2008 R2 with another location with VPN, this is working fine but when i have installed symantec endpoint protection client on the server than KMS not working.

I have add rule in the symantec firewall but this rule not working whe symantec stop kms working when symantec start kms not working.

Can you please any one help me.