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Administrator Information
Cannot Communicate Suddenly
The IP address of the printer has been changed or cannot be used.
When the IP address registered to the local address on Group Policy has been changed or cannot be used, IPsec
communication cannot be performed. Disable IPsec using the printer's control panel.
If the DHCP is out of date, rebooting or the IPv6 address is out of date or has not been obtained, then the IP
address registered for the printer's Web Config (Network Security tab > IPsec/IP Filtering > Basic > Group
Policy > Local Address(Printer)) may not be found.
Use a static IP address.
The IP address of the computer has been changed or cannot be used.
When the IP address registered to the remote address on Group Policy has been changed or cannot be used, IPsec
communication cannot be performed.
Disable IPsec using the printer's control panel.
If the DHCP is out of date, rebooting or the IPv6 address is out of date or has not been obtained, then the IP
address registered for the printer's Web Config (Network Security tab > IPsec/IP Filtering > Basic > Group
Policy > Remote Address(Host)) may not be found.
Use a static IP address.
Related Information
"Application for Configuring Printer Operations (Web Config)" on page 374
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"Encrypted Communication Using IPsec/IP Filtering" on page 541
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Cannot Create the Secure IPP Printing Port
The correct certificate is not specified as the server certificate for SSL/TLS communication.
If the specified certificate is not correct, creating a port may fail. Make sure you are using the correct certificate.
The CA certificate is not imported to the computer accessing the printer.
If a CA certificate is not imported to the computer, creating a port may fail. Make sure a CA certificate is imported.
Related Information
"Configuring a Server Certificate for the Printer" on page 540
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Cannot Connect After Configuring IPsec/IP Filtering
The settings of IPsec/IP Filtering are incorrect.
Disable IPsec/IP filtering from the printer's control panel. Connect the printer and computer and make the
IPsec/IP Filtering settings again.
Related Information
"Encrypted Communication Using IPsec/IP Filtering" on page 541
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>
Advanced Security Settings
560
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Solving Problems for Advanced Security
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