Aficio printer-copier and UPnP problem solved

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vix
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Aficio printer-copier and UPnP problem solved

Post by vix » Sat Sep 13, 2008 4:44 pm

I have a Ricoh (or Aficio or Nashuatec) printer-copier at office, a real workhorse but with a serious problem: its network printer functions get messed up when Universal Plug and Play (UPnP) is enabled on the LAN.

I've searched the web and I found out that this is a real problem with various Ricoh copiers. So I had to disable UPnP and manually forward ports for the various users and applications on the LAN which was a real headache.

Today I found that I can keep UPnP enabled as long as I block traffic on ports UDP 1900 and TCP 5000 on the printer's IP.

For example, my Aficio has a static IP 192.168.1.2

Going to Advanced > IP Filters, I created a rule called UPNPBLOCK with the following mappings:

Protocol, Port Start, Port End, Port Map
UDP, 1900, 1900, 1900
TCP, 5000, 5000, 5000

and I assigned this to 192.168.1.2

(Level of detail is high to help other web searchers apply the solution)

The printer now works without problems, at least on first tests. I'll add a reminder to post again if any problems arise.

Routertech 2.6 firmware but most routers have IP filtering.
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