configure IPSEC on UAG to publish outlook anywhere in exchange 2013

We need to publish Exchange 2013 with UAG 2010 and we also need to use IPSEC where UAG 2010 exist in DMZ.

what should be the configuration which we need to do on UAG 2010 (TMG 2010)

Do we need to perform any configuration on Exchange 2013 CAS server?

Thanks