February 14, 2020
I have recently installed a new Canon printer which works fine when connected via usb but cannot be found when connecting via wifi. If I disable the Router firewall the Printer works fine via wifi but despite adding the printers reserved IP address to the incoming rules I cannot get the printer to work wirelessly with the firewall on. My PC is protected by windows firewall and is on the same subnet as the printer although the PC is connected via ethernet not wifi to the router(does this make a difference?)
Although the PC is protected by windows firewall my mobile devices connect direct to the router via wifi so I do need the router firewall turned on, can anybody help me set up a firewall rule to enable the printer to work via wifi?
although the PC is connected via ethernet not wifi to the router(does this make a difference?)
No, makes no difference at all. Most likely scenario here is that a port (on the router) that's required by the printer is currently blocked. If you gave us details of your router's brand and model number, plus the Canon printer's model number, we might be able to help.
However, if you are using a router provided by your ISP, by far the quickest and simplest method to resolve this issue would be to contact your ISP. They can remotely block and unblock ports on your router as well as help with the router's firewall settings.
February 14, 2020
Okay, I have found a couple of useful references. This first reference explains how to setup a new rule in the TD-W9980 router's firewall: https://www.manualslib.com/manual/835509/Tp-Link-Td-W9980.html?page=96#manual
This one shows what ports need to be allowed for printing with a Canon printer: https://oip.manual.canon/USRMA-2595-zz-OP-enGB/contents/OP_CPB_0907.html
Following the steps in the first link (creating a rule) should resolve the issue.
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