Surefire install of XRDP on CentOS 6.4 (x64)

login as root
yum update
reboot
yum install tigervnc-server libtool automake gcc openssl-devel pam-devel libX11-devel
libXfixes-devel
[download current version of xrdp]
tar -zxvf xrdp-[version].tar.gz
cd xrdp-[version]
./bootstrap
./configure
make
make install
cp /etc/xrdp/xrdp.sh /etc/init.d/
/sbin/chkconfig –add xrdp.sh
reboot

Configure or turn off the firewall.
DONE! Login from an RDP client.