Den 2017-04-24 kl. 18:53, skrev Rick Stevens: > On 04/24/2017 05:38 AM, Jon Ingason wrote: >> Hi, >> >> I got a very strange network problem. My home network is one router >> (ASUS RT-N66U) (R), two Fedora machines (A F24 and B F25) connected to >> the switch ports on the route. I hav also a laptop, Windows 10 (C), HP >> ENVY AIO (P), and couple Android devices (mobile phones, tablets etc), >> all connected via WiFi to the router. >> >> I was installing the printer (P) on B with HP Device Manager (HPDM) and >> that went well. Then I started HPMD on A and the printer icon showed up >> in HPMD, but the printer and scanner didn't show up. Refresh didn't >> helped either. The I removed the printer and tried to install it again. >> Got message "HPLIP cannot detect printers in your network." >> >> I then pinged P from A but no response from the printer. Then I locked >> at the HPMD on B and every thin was OK. I could refresh the printer and >> both printer and scanner was there. I pinged P from B and C with >> success, but not from A. But I could ping B, D and R from A with success. >> >> I used Wireshark on A and B to see what is happening, but it just >> confirmed that P didn't respond to A, responded to B. >> >> Question is what can be the problem here. > > It's probably a firewall setting on system "A" that's blocking access. > Compare the settings of "B" (which works) to those of "A" (which > doesn't). Make sure ICMP in/out is permitted for your local network on > "A" (that's "ping"). For printing, HP tends to use TCP port 9100 for > their "JetDirect" protocol, but also can use "ipp" (TCP/UDP port 631). I can't see why the firewall should suddenly start blocking a specific address, that is the printers IP-address. Besides A can ping all devices that B can except the printer. In A's firewall, there is no rule that is specific for the printer IP-address. I have been using this printer/scanner for a over two years from machine A without a problem. I would appreciate more tips. > ---------------------------------------------------------------------- > - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx - > - AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 - > - - > - Grabel's Law: 2 is not equal to 3--not even for large values of 2. - > ---------------------------------------------------------------------- > -- Regards Jon Ingason _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
