Used to use HP ColorLaserjet 2840 to scan using Skanlite on Leap 15.2. It is a network device connected through the Lan and it worked, although there were odd niggles. It never worked for hplip installation but worked as a manual network install using the fixed ip of the printer.

Now I have updated to Tumbleweed and have problems. Hplip still fails with a crash. In spite of all the available hplip packages available the Tumbleweed package still will not work with this printer, a python fault if I remember correctly but I have an unsolved thread on this from before Tumbleweed.

However I can install the printer using a network installation as previously but now Skanlite does not work at all. I suspect a firewall problem and would appreciate some help please in diagnosing and solving please.