Security Methods
Algorithms
ESP encryption algorithm
AES-CBC-128, AES-CBC-192, AES-CBC-256, AES-GCM-128, AES-GCM-192,
AES-GCM-256, 3DES
ESP authentication algorithm
SHA-1, SHA-256, SHA-384, SHA-512, MD5
AH authentication algorithm
SHA-1, SHA-256, SHA-384, SHA-512, MD5
*available for IKEv2 only
Related Information
&
“Encrypted Communication Using IPsec/IP Filtering” on page 211
Cannot Communicate Suddenly
The IP address of the scanner 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 scanner'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If the DHCP is out of date, rebooting or the IPv6 address is out of date or has not been obtained, then the IP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 scanner's Web Config (
Network Security
tab >
IPsec/IP Filtering
>
Basic
>
Group
Policy
>
Local Address (Scanner)
) 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 scanner'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If the DHCP is out of date, rebooting or the IPv6 address is out of date or has not been obtained, then the IP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 scanner'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
&
“Running Web Config on a Web Browser” on page 26
&
“Encrypted Communication Using IPsec/IP Filtering” on page 211
Cannot Connect After Configuring IPsec/IP Filtering
The settings of IPsec/IP Filtering are incorrect.
Disable IPsec/IP filtering from the scanner’s control panel. Connect the scanner and computer and make the
IPsec/IP Filtering settings again.
Related Information
&
“Encrypted Communication Using IPsec/IP Filtering” on page 211
>
>
Solving Problems for Advanced Security
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