Epson DS-790WN User Manual page 200

Solving Problems
❏ 80bit: AES256/AES128/3DES
❏ 112bit: AES256/AES128/3DES
❏ 128bit: AES256/AES128
❏ 192bit: AES256
❏ 256bit: AES256
CA-signed Certificate is expired.
Solutions
If there is a problem with the expiration date of the certificate, "The certificate has expired" is displayed
when connecting to Web Config with SSL/TLS communication (https). If the message appears before its
expiration date, make sure that the scanner's date is configured correctly.
The common name of the certificate and the scanner do not match.
Solutions
If the common name of the certificate and the scanner do not match, the message "The name of the
security certificate does not match···" is displayed when accessing Web Config using SSL/TLS
communication (https). This happens because the following IP addresses do not match.
❏ The scanner's IP address entered to common name for creating a Self-signed Certificate or CSR
❏ IP address entered to web browser when running Web Config
For Self-signed Certificate, update the certificate.
For CA-signed Certificate, take the certificate again for the scanner.
The proxy server setting of local address is not set to web browser.
Solutions
When the scanner is set to use a proxy server, configure the web browser not to connect to the local
address via the proxy server.
❏ Windows:
Select Control Panel > Network and Internet > Internet Options > Connections > LAN settings >
Proxy server, and then configure not to use the proxy server for LAN (local addresses).
❏ Mac OS:
Select System Preferences > Network > Advanced > Proxies, and then register the local address for
Bypass proxy settings for these Hosts & Domains.
Example:
192.168.1.*: Local address 192.168.1.XXX, subnet mask 255.255.255.0
192.168.*.*: Local address 192.168.XXX.XXX, subnet mask 255.255.0.0
DHCP is disabled in the computer's settings.
Solutions
If the DHCP for obtaining an IP address automatically is disabled on the computer, you may not be able
to access Web Config. Enable DHCP.
Example for Windows 10:
>
Problems when Preparing Network Scanning
>
Hints to Solving Problems
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