Canon PRO-300 Series Online Manual page 435

If firewall interferes with printer search:
• If a firewall message appears:
If a firewall message appears warning that Canon software is attempting to access the network, set
the security software to allow access.
After allowing the software to access, specify the IP address or host name and search for printers
again.
If the printer is found, follow the instructions on the screen to continue to set up the network
communication.
• If no firewall message appears:
Temporarily disable the firewall and specify the IP address or host name to search for printers again.
After the setup is complete, re-enable the firewall.
Note
• For more on firewall settings of your operating system or security software, see instruction manual or
contact its manufacturer.
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