The TCP/IP architecture which underpins modern networking can handle up to 65535 ports per IP address and port allocation is co-ordinated by the IANA (Internet Assigned Number Authority) registry.
The Webadmin console for Lotus Foundations Server uses port 8042 and 8043. These ports fall into the range of ports 1024 through 49151 which is IANA’s category of “DCCP Registered ports” and according to IANA those ports SHOULD NOT be used without IANA registration (their emphasis).
Two days ago (16th November 2008) the IANA registry was updated and now shows port 8042 allocated to “FireScope Agent” and port 8043 allocated to ‘FireScope Server’. Firescope has been around for two years and make software products which “…provides a real-time view of the health of IT operations by collecting and processing security, performance and availability data from nearly any server, router, security point solution or other networked device.”
So where does that leave Lotus Foundations Server? Apart from the bleedingly obvious fact that you can’t run Firescope on Foundations, I think Firescope has the Legal High Ground here and IBM/Lotus will eventually need to change the port address for Foundations.
In the end, its no big deal if Lotus has to do that, but after having the product in the market for ten years I do find it amazing that another company has beaten Nitix/IBM/Lotus to the punch and registered those ports for its own use.