Actually, ... it isn't smart to use the router's DNS Host Mapping index- doing so will mirror routes from the listed machine right back to it, thereby denying that machine access to the Internet. So, ... I have since removed that entry in the router's DNS Host Mapping page.
Really just trying to find a way to remember login credentials to I don't have to type them every time that Putty times out. Thought a Kerberos ticket would do the trick, but setting that up is complicated and it seems to require a routable server on which to obtain/store the tickets. Anyone know how to get Kerberos work on a local network?