Vmware guest can't connect to puppetmaster on host

My setup is as follows:
I am running Vmware Server on Ubuntu Feisty. This is the puppetmaster.

I am running a guest of Ubuntu Gutsy. This is the puppet.

When I try to run puppetd on the guest I get the expected message 
"notice: Did not recieve certificate"

Going back to the server and running "puppetca --list" does not list any 
requests. As a hunch I telneted the hosts vmware interface 172.16.21.1 
port 8140 and I don't get a connection. This suggests to me that 
puppetmaster is not binding to this interface. How can I correct this?