Hi,
To access the server i.j.k.l from outside , this server should have public IP if its in a DMZ. If its in a private (internal) segment then one-to-one static NAT is required on the PIX.
Also some of the TCP and UDP ports need to be open in PIX for outbound connection from source ( public IP ) to the destination ( server Public or natted IP). To support all the version of pcAnywhere following ports need to be open.
TCP:65301,5631 UDP:22,5632
Thanks,
Navnit