GTM - GTM communication Firewall RUles

Hi,

 

 

I am deploying two GTM's and the communication between the GTM's is through the firewalls.

 

 

So,I need the info about the firewall rules required to define between the GTM's

 

 

- GTM1 -- FW --GTM2

 

 

Apart from ports 22 and 4353 do i need to allow any other ports got GTM to GTM communications

 

 

Thanks

 

Raj