Epson WF-3820 Series, User Manual

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❏
256bit: AES256
CA-signed Certificate is expired.
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 printer's date is configured correctly.
The common name of the certificate and the printer do not match.
If the common name of the certificate and the printer 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 printer'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 printer.
The proxy server setting of local address is not set to web browser.
When the printer 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
Managing the Printer
Disabling the External Interface
You can disable the interface that is used to connect the device to the printer. Make the restriction settings to
restrict printing and scanning other than via network.
Note:
You can also make the restriction settings on the printer's control panel.
❏
Memory Device :
Settings
>
General Settings
>
Printer Settings
>
Memory Device Interface
>
Memory Device
❏
PC Connection via USB : Settings > General Settings > Printer Settings > PC Connection via USB
1.
Access Web Config and select the
Product Security
tab >
External Interface
.
Administrator Information
>
Managing the Printer
>
Disabling the External Interface
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