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Epson LQ-780N Network Guide - Page 36

Deleting a CA-signed Certificate

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Network Guide Security Settings CA-signed Certificate Importing Setting Items Items Server Certificate or Client Certificate Private Key Password CA Certificate 1 CA Certificate 2 Settings and Explanation Select a certificate's format. If you obtain a certificate of the PEM/DER format by using a CSR created from a computer, specify a private key file that is match a certificate. Enter a password to encrypt a private key. If your certificate's format is Certificate (PEM/DER), import a certificate of a certificate authority that issues a server certificate. Specify a file if you need. If your certificate's format is Certificate (PEM/DER), import a certificate of a certificate authority that issues CA Certificate 1. Specify a file if you need. Related Information & "Importing a CA-signed Certificate" on page 35 Deleting a CA-signed Certificate You can delete an imported certificate when the certificate has expired or when an encrypted connection is no longer necessary. c Important: If you obtain a certificate using a CSR created from Web Config, you cannot import a deleted certificate again. In this case, create a CSR and obtain a certificate again. A Access Web Config, and then select Network Security Settings. Next, select SSL/TLS > Certificate. B Click Delete. C Confirm that you want to delete the certificate in the message displayed. 36

Section	Page
Contents	2
Copyrights	4
Trademarks	5
About this Manual	6
Marks and Symbols	6
Descriptions Used in this Manual	6
Operating System References	6
Introduction	8
Manual Component	8
Definitions of Terms Used in this Guide	8
Preparation	10
Flow of the Printer Settings	10
Introduction of Printer Connection	10
Server / Client Connection Settings	11
Peer to Peer Connection Settings	11
Preparing Connection to a Network	11
Gathering Information on the Connection Setting	11
Printer Specifications	12
Type of IP Address Assignment	12
Method for Setting Network Connection	12
Connection	14
Connecting to the Network	14
Connecting to LAN	14
Assigning an IP Address Using EpsonNet Config	14
Installing EpsonNet Config	14
Running EpsonNet Config	14
Setting an IP address	14
Connecting to the Network Using the Installer	18
Function Settings	20
Web Config (Web Page for Device)	20
About Web Config	20
Accessing Web Config	20
Entering IP address	20
Using the Print Functions	21
Requirement for Printing over a Network	21
Setting of the Printer Driver Using Server / Client Connection	21
Setting Up Standard TCP/IP Ports - Windows	21
Sharing the Printer	23
Installing Additional Drivers	24
Using the Shared Printer	24
Printer Driver Settings for Peer to Peer Connection	24
Setting the Printer Driver	25
Security Settings	26
Security Settings and Prevention of Danger	26
Security Feature Settings	27
Configuring the Administrator Password	27
Configuring the Administrator Password Using Web Config	27
Controlling Protocols and Services	28
Controlling Protocols	28
Protocols you can Enable or Disable	29
Protocol Setting Items	30
SSL/TLS Communication with the Printer	32
About Digital Certification	33
Obtaining and Importing a CA-signed Certificate	33
Obtaining a CA-signed Certificate	33
Importing a CA-signed Certificate	35
Deleting a CA-signed Certificate	36
Updating a Self-signed Certificate	37
Encrypted Communication Using IPsec/IP Filtering	38
About IPsec/IP Filtering	38
Configuring Default Policy	38
Default Policy Setting Items	39
Configuring Group Policy	40
Group Policy Setting Items	41
Combination of Local Address(Printer) and Remote Address(Host) on Group Policy	43
References of Service Name on Group Policy	43
Configuration Examples of IPsec/IP Filtering	44
Using SNMPv3 Protocol	45
About SNMPv3	45
Configuring SNMPv3	45
SNMPv3 Setting Items	46
Solving Problems	48
Checking the Log for Server and Network Device	48
Printing a Network Status Sheet	48
Initializing the Network Settings	48
Restoring the Network Settings from the Printer	48
Restoring the Network Settings using EpsonNet Config	49
Checking the Communication between Devices and Computers	49
Checking the Connection Using a Ping Command	49
Problems Using Network Software	50
Cannot Access Web Config	50
Model name and/or IP address are not displayed on EpsonNet Config	51
Solving Problems for Advanced Security	51
Restoring the Security Settings	51
Disabling the Security Function from the Printer	51
Restoring the Security Function Using Web Config	52
Disabling IPsec/IP Filtering Using Web Config	52
Problems Using Network Security Features	52
Forgot a Pre–shared Key	52
Cannot Communicate with IPsec Communication	52
Cannot Communicate Suddenly	53
Cannot Create the Secure IPP Printing Port	53
Cannot Connect After Configuring IPsec/IP Filtering	53
Problems on Using a Digital Certificate	54
Cannot Import a CA-signed Certificate	54
Cannot Update a Self-Signed Certificate	54
Cannot Create a CSR	55
Warning Relating to a Digital Certificate Appears	55
Delete a CA-signed Certificate by Mistake	57
Appendix	58
Introduction of Network Software	58
Epson Device Admin	58
Running Epson Device Admin (Windows only)	58
EpsonNet Print	58