On Mon, 2018-02-26 at 09:05 +0100, François Patte wrote: > Le 26/02/2018 à 05:35, Gordon Messmer a écrit : > > On 02/25/2018 10:42 AM, François Patte wrote: > > > I opened firefox on one computer and miracle: the printer attached to > > > the other computer is discovered and cups admin interface asks me if I > > > want to add this printer. Nice: the job is easy!!*But* this does not > > > work at all!! > > > > > > If I recall correctly, discovery is a matter of multicast DNS > > announcement. Since the source announces the printer, firewall rules > > don't need to be adjusted to allow that. However, you do need to adjust > > firewall rules to allow incoming IPP connections. Have you done that? > > iptables -L > > Chain INPUT > > ACCEPT tcp -- anywhere anywhere tcp dpt:ipp > ACCEPT tcp -- anywhere anywhere tcp spt:ipp > ACCEPT udp -- anywhere anywhere udp dpt:ipp > ACCEPT udp -- anywhere anywhere udp spt:ipp > > Chain OUTPUT > > ACCEPT tcp -- anywhere anywhere tcp spt:ipp > ACCEPT tcp -- anywhere anywhere tcp dpt:ipp > ACCEPT udp -- anywhere anywhere udp spt:ipp > ACCEPT udp -- anywhere anywhere udp dpt:ipp > > _______________________________________________ > A working Centos 7.4 server but maybe ... systemctl status cups-browsed.service ??????? /etc/cups/cups-browsed.conf # Which protocols will we use to discover printers on the network? # Can use DNSSD and/or CUPS, or 'none' for neither. BrowseRemoteProtocols dnssd cups # Which protocols will we use to broadcast shared local printers to the network? # Can use DNSSD and/or CUPS, or 'none' for neither. # Only CUPS is actually supported, as DNSSD is done by CUPS itself (we ignore # DNSSD in this directive). # BrowseLocalProtocols none --------->>>>>>>> Default ????????? BrowseLocalProtocols cups # Settings of this directive apply to both BrowseRemoteProtocols and # BrowseLocalProtocols. # Can use DNSSD and/or CUPS, or 'none' for neither. # BrowseProtocols none BrowseProtocols dnssd cups //----------------------------------------- Also #Multicast DNS Port mdns/5353 (for CUPS) iptables -A INPUT -m state --state NEW -m tcp -p tcp -d $DEST --dport 5353 -s $SOURCE -j ACCEPT iptables -A INPUT -m state --state NEW -m udp -p udp -d $DEST --dport 5353 -s $SOURCE -j ACCEPT #CUPS port ipp/631 iptables -A INPUT -m state --state NEW -m tcp -p tcp -d $DEST --dport 631 -s $SOURCE -j ACCEPT iptables -A INPUT -m state --state NEW -m udp -p udp -d $DEST --dport 631 -s $SOURCE -j ACCEPT John _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
