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suse 11.2, firewall must be down for wireless printer

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http://forums.opensuse.org – basically I have a home wireless network and running openSuse 11.2 and using Yast ... hp j6480 wireless (setup with hplip) printer (multifunction fax/scan/printer), toshiba laptop wireless, and netgear wireless router .. as long as the firewall is not running I can print just fine ... as soon as I start the firewall I have connection errors ... I have noticed the wlan0 and eth0 are configured in the external zone for the firewall so I added "cups" in the Firewall Configuration: Allowed Services ... the Firewall configuration: Summary displays ======================================= Firewall Starting Enable firewall automatic starting Firewall starts after the configuration gets written ----------------------- Internal Zone No interfaces assigned to this zone. Demilitarized Zone No interfaces assigned to this zone. External Zone Interfaces RTL8101E/RTL8102E PCI Express Fast Ethernet controller / eth0 AR5001 Wireless Network Adapter / wlan0 'unknown' Unknown network interface. Open Services, Ports, and Protocols cups: TCP Ports: ipp (631) UDP Ports: ipp (631) Broadcast Ports: ipp (631) ================================ also in the hplip forum it mentioned that hplip uses ports 161, 162 1and 9100 ... now being a confused noob ... am I missing something very simple? (Distributions)