NetWare 6.0 SP5, Windows 2003 SP2
We had the same problem:
We installed the Remote Agent with the push Option.
The firewall on the Windows Server remains disabled
all the times.
After the installation the service runs on the Windows
Server and the Server name is added to NDMPSVRS.DAT
on the NetWare Media Server.
We could ping the Media Server from Windows by Name
but pinging the Agent from NetWare failed due to an old
IP Address in DNS. This old address was added to DNS
by dyn DHCP Updates during installation phase of the
server.
After correcting the Name Resolution inside NetWare
the ping by name succeeded and the Remote Agend appeared.