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Related Information

“About Digital Certification” on page 33

Delete a CA-signed Certificate by Mistake

Is there a backup file for the certificate?

If you have the backup file, import the certificate again.

If you obtain a certificate using a CSR created from Web Config, you cannot import a deleted certificate again.
Create a CSR and obtain a new certificate.

Related Information

“Deleting a CA-signed Certificate” on page 36

“Importing a CA-signed Certificate” on page 35

Network Guide

Solving Problems

Summary of Contents for LQ-780N

Page 1: ...Network Guide NPD6760 00 EN ...

Page 2: ... Settings 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 SSL TLS Communication with the Printer 32 About Digital Certification 33 Obtaining and Importing a CA signed Certificate 33 Deleting a CA signed Certif...

Page 3: ...Function from the Printer 51 Restoring the Security Function Using Web Config 52 Problems Using Network Security Features 52 Problems on Using a Digital Certificate 54 Appendix Introduction of Network Software 58 Epson Device Admin 58 EpsonNet Print 58 EpsonNet SetupManager 58 Network Guide Contents 3 ...

Page 4: ...enses incurred by the purchaser or third parties as a result of accident misuse or abuse of this product or unauthorized modifications repairs or alterations to this product or excluding the U S failure to strictly comply with Seiko Epson Corporation s operating and maintenance instructions Seiko Epson Corporation and its affiliates shall not be liable for any damages or problems arising from the ...

Page 5: ... Corporation Microsoft Windows Windows Server and Windows Vista are registered trademarks of Microsoft Corporation General Notice Other product names used herein are for identification purposes only and may be trademarks of their respective owners Epson disclaims any and all rights in those marks Network Guide Trademarks 5 ...

Page 6: ...m References Windows In this manual terms such as Windows 10 Windows 8 1 Windows 8 Windows 7 Windows Vista Windows XP Windows Server 2019 Windows Server 2016 Windows Server 2012 R2 Windows Server 2012 Windows Server 2008 R2 Windows Server 2008 Windows Server 2003 R2 and Windows Server 2003 refer to the following operating systems Additionally Windows is used to refer to all versions Microsoft Wind...

Page 7: ...ating system Microsoft Windows Server 2012 operating system Microsoft Windows Server 2008 R2 operating system Microsoft Windows Server 2008 operating system Microsoft Windows Server 2003 R2 operating system Microsoft Windows Server 2003 operating system Network Guide About this Manual 7 ...

Page 8: ...arge organizations administrators have authority over the network or devices on the group unit of a department or division and network administrators are in charge of the communication settings for beyond the organization such as the Internet Network administrator The person in charge of controlling network communication The person who set up the router proxy server DNS server and mail server to c...

Page 9: ...ge a device such as Epson Device Admin EpsonNet Config EpsonNet SetupManager etc ASCII American Standard Code for Information Interchange One of the standard character codes 128 characters are defined including such characters as the alphabet a z A Z Arabic numbers 0 9 symbols blank characters and control characters When ASCII is described in this guide it indicates the 0x20 0x7E hex number listed...

Page 10: ...ettings C Security settings Administrator settings SSL TLS Protocol control IPsec IP firtering Related Information Connection on page 14 Function Settings on page 20 Security Settings on page 26 Introduction of Printer Connection The following two methods are available for the printer s network directly by both methods Server client connection printer sharing using the Windows server Peer to peer ...

Page 11: ...ndows server is turned off Related Information Definitions of Terms Used in this Guide on page 8 Peer to Peer Connection Settings Connection method Connect the printer to the network via hub L2 switch Printer driver Install the printer driver on each client computer It can be delivered as a package by using EpsonNet SetupManager or automatically by using the Group Policy of the Windows server Feat...

Page 12: ...pes for assigning an IP address to the printer Static IP address Assign the predetermined unique IP address to the printer The IP address is not changed even when turning on the printer or turning off the router so you can manage the device by IP address This type is suitable for a network where many printers are managed such as a large office or school Automatic assignment by DHCP function The co...

Page 13: ...nstaller If the installer is used the printer s network and client computer are set automatically The setting is available by following the installer s instructions even if you do not have deep knowledge of the network This is recommended when setting the printer and a few client computers by using the server client connection sharing the printer using the Windows server Related Information Assign...

Page 14: ...sc supplied with the printer and follow the on screen instructions Running EpsonNet Config Select All Programs EpsonNet EpsonNet Config SE EpsonNet Config Note If the firewall alert appears allow access for EpsonNet Config Setting an IP address A Turn on the printer B Connect the printer to the network using an Ethernet cable C Start EpsonNet Config A list of the printers on the network is display...

Page 15: ...ple printers of the same model you can identify the printer using the MAC address After the printer is connected to the network you can change the IP address assignment method E Select Network TCP IP Basic Network Guide Connection 15 ...

Page 16: ...and Default Gateway Note Enter a static address when you connect the printer to a secure network In the TCP IP menu you can make settings for the DNS on the DNS screen G Click Transmit H Click OK on the confirmation screen Network Guide Connection 16 ...

Page 17: ...I Click OK J Click Refresh Network Guide Connection 17 ...

Page 18: ...signed Connecting to the Network Using the Installer We recommend using the installer to connect the printer to a computer A Insert the software disc into the computer and then follow the on screen instructions Network Guide Connection 18 ...

Page 19: ... is displayed select Ethernet Connection and then click Next If you connect the printer to the network using an Ethernet cable the following screen is displayed Select the printer and then click Next C Follow the on screen instructions Network Guide Connection 19 ...

Page 20: ...nfiguring the administrator password to the printer Accessing Web Config There are two methods to access Web Config JavaScript must be enabled in the browser Entering IP address Start EpsonNet Config and then double click the printer in the list Enter the printer s IP address into a web browser When accessing Web Config via HTTPS a warning message will appear in the browser since a self signed cer...

Page 21: ...tem Installing the printer driver Making the print queue to a computer Setting the port to a network Setting of the Printer Driver Using Server Client Connection Set the printer to enable printing from a computer that was previously set as the print server and share the printer Install the printer driver for both the server and the client on the print server If the installer is used setting of the...

Page 22: ...Address or Printer Name or IP Address and then click Next Do not change Port name Click Continue when the User Account Control screen is displayed Note If you specify the printer name on the network where the name resolution is available the IP address is tracked even if printer s IP address has been changed by DHCP You can confirm the printer name from the network status screen on the printer s c...

Page 23: ...23 Checking the Port Configuration Windows Check if the correct port is set for the print queue A Open the devices and printers screen Click start Windows System Control Panel Hardware and Sound Devices and Printers B Open the printer properties screen Right click the printer icon and then click Printer properties C Click the Ports tab select Standard TCP IP Port and then click Configure Port D Ch...

Page 24: ...Related Information Using the Shared Printer on page 24 Using the Shared Printer The administrator needs to inform the clients of the computer name assigned to the print server and how to add it to their computers If the additional driver s have not been configured yet inform the clients how to use Devices and Printers to add the shared printer If additional driver s have already been configured o...

Page 25: ...delivering the driver as a package install operation time can be reduced dramatically A Run the installer B Select the connection method for the printer and then click Next Note If Select Software Installation is displayed select Change or re set the connection method and then click Next C Follow the on screen instructions Related Information EpsonNet SetupManager on page 58 Network Guide Function...

Page 26: ...ion stored in the device such as ID password network settings and contacts Also reduce a wide range of security risks such as leakage of information for the network environment or security policy Protocol and control of service Controls the protocols and services to be used for communication between devices and computers and it enables and disables feature such as print A protocol or service that ...

Page 27: ...Configuring the Administrator Password on page 27 Controlling Protocols and Services on page 28 SSL TLS Communication with the Printer on page 32 Security Feature Settings When setting IPsec IP filtering it is recommended that you access Web Config using SSL TLS to communicate settings information in order to reduce security risks such as tampering or interception Configuring the Administrator Pas...

Page 28: ...elete Administrator Password and then enter the administrator password Related Information Accessing Web Config on page 20 Controlling Protocols and Services You can print using a variety of pathways and protocols You can lower unintended security risks by restricting printing from specific pathways or by controlling the available functions Controlling Protocols Configure the protocol settings A A...

Page 29: ...you can print from the LPR port RAW Port9100 Settings You can specify whether or not to allow printing from the RAW port Port 9100 When this is enabled you can print from the RAW port Port 9100 RAW Custom Port Settings You can specify whether or not to allow printing from the RAW port Custom Port When this is enabled you can print from the RAW port Custom Port IPP Settings You can specify whether ...

Page 30: ...me Location Displays the Bonjour location name Top Priority Protocol Select the top priority protocol for Bonjour print SLP Settings Enable SLP Select this to enable the SLP function This is used with the network searching in EpsonNet Config LLTD Settings Enable LLTD Select this to enable LLTD The printer is displayed in the Windows network map Device Name Displays the LLTD device name LLMNR Setti...

Page 31: ...PP Select to enable IPP communication Only printers that support IPP are displayed Allow Non secure Communication Select to allow the printer to communicate without any security measures IPP Communication Timeout sec Enter the timeout value for IPP printing between 0 to 3 600 seconds URL Network Displays IPP URLs http and https when the printer is connected by wired LAN The URL is a combined value...

Page 32: ...ank Confirm Password Enter the password you configured for confirmation Encryption Settings Algorithm Select an algorithm for an encryption for SNMPv3 Password Enter the password for an encryption for SNMPv3 Enter between 8 and 32 characters in ASCII 0x20 0x7E If you do not specify this leave it blank Confirm Password Enter the password you configured for confirmation Context Name Enter within 32 ...

Page 33: ...ining and Importing a CA signed Certificate on page 33 Deleting a CA signed Certificate on page 36 Updating a Self signed Certificate on page 37 Obtaining and Importing a CA signed Certificate Obtaining a CA signed Certificate To obtain a CA signed certificate create a CSR Certificate Signing Request and apply it to certificate authority You can create a CSR using Web Config and a computer Follow ...

Page 34: ...ave a certificate to a destination Related Information Accessing Web Config on page 20 CSR Setting Items on page 34 Importing a CA signed Certificate on page 35 CSR Setting Items Items Settings and Explanation Key Length Select a key length for a CSR Common Name You can enter between 1 and 128 characters If this is an IP address it should be a static IP address Example URL for accessing Web Config...

Page 35: ...ording to the following A certificate of the PEM DER format obtained from Web Config Private Key Do not configure because the printer contains a private key Password Do not configure CA Certificate 1 CA Certificate 2 Optional A certificate of the PEM DER format obtained from a computer Private Key You need to set Password Do not configure CA Certificate 1 CA Certificate 2 Optional A certificate of...

Page 36: ...ficate 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 cImportant If you obtain a certi...

Page 37: ... until you obtain and import a CA signed certificate A Access Web Config and select Network Security Settings SSL TLS Certificate B Click Update C Enter Common Name Enter an IP address or an identifier such as an FQDN name for the printer You can enter between 1 and 128 characters Note You can separate distinguished name CN with commas D Specify a validity period for the certificate E Click Next A...

Page 38: ...t policy applies to every user or group connecting to the printer For more fine grained control over users and groups of users configure group policies A group policy is one or more rules applied to a user or user group The printer controls IP packets that match with configured policies IP packets are authenticated in the order of a group policy 1 to 10 then a default policy Configuring Default Po...

Page 39: ...patible authentication methods Pre Shared Key Enter a pre shared key between 1 and 127 characters Confirm Pre Shared Key Enter the key you configured for confirmation Encapsulation If you select IPsec for Access Control you need to configure an encapsulation mode Transport Mode If you only use the printer on the same LAN select this IP packets of layer 4 or later are encrypted Tunnel Mode If you u...

Page 40: ...prohibited you can use IPsec Related Information Configuring Default Policy on page 38 Configuring Group Policy A Access the printer s Web Config and select Network Security Settings IPsec IP Filtering Basic B Click a numbered tab you want to configure C Enter a value for each item D Click Next A confirmation message is displayed E Click OK The printer is updated Related Information Accessing Web ...

Page 41: ... through Local Address Printer Select an IPv4 address or IPv6 address that matches your network environment If an IP address is assigned automatically you can select Use auto obtained IPv4 address Remote Address Host Enter a device s IP address to control access The IP address must be between 0 and 43 characters If you do not enter an IP address all addresses are controlled Note If an IP address i...

Page 42: ...t numbers at the maximum Example 25 80 143 5220 If you do not enter a port number all ports are controlled IKE Version Displays the IKE version Authentication Method If you select IPsec for Access Control select an option Pre Shared Key Enter a pre shared key between 1 and 127 characters Confirm Pre Shared Key Enter the key you configured for confirmation Encapsulation If you select IPsec for Acce...

Page 43: ...be disabled 3 Except IPv6 link local addresses References of Service Name on Group Policy Note Unavailable services are displayed but cannot be selected Service Name Protocol type Local port number Remote port number Features controlled Any All services ENPC UDP 3289 Any port Searching for a printer from applications such as EpsonNet Config a printer driver and the a scanner driver SNMP UDP 161 An...

Page 44: ...g IPsec packets only This example is to configure a default policy only Default Policy IPsec IP Filtering Enable Access Control IPsec Authentication Method Pre Shared Key Pre Shared Key Enter up to 127 characters Group Policy Do not configure Receiving printing data and printer settings This example allows communications of printing data and printer configuration from specified services Default Po...

Page 45: ...l that carries out monitoring and control to collect the information of the devices that are connected to the network SNMPv3 is the management security feature version that has been enhanced When using SNMPv3 state monitoring and setting changes of the SNMP communication packet can be authenticated and encrypted in order to protect the SNMP communication packet from network risks such as wiretappi...

Page 46: ...Algorithm Select an algorithm for an authentication Password Enter between 8 and 32 characters in ASCII 0x20 0x7E Confirm Password Enter the password you configured for confirmation Encryption Settings Algorithm Select an algorithm for an encryption Password Enter between 8 and 32 characters in ASCII 0x20 0x7E Confirm Password Enter the password you configured for confirmation Context Name Enter b...

Page 47: ...Related Information Configuring SNMPv3 on page 45 Network Guide Security Settings 47 ...

Page 48: ...int out and check detailed network information A Load paper B Use the following sizes of paper Single sheet paper multiple sheets of A4 size or larger or continuous paper of 228 6 mm 9 inches or larger See the User s Guide for details on Paper Handling C Hold down the Status sheet button for about three seconds The network status sheets are printed Initializing the Network Settings Restoring the N...

Page 49: ...can use a Ping command to make sure the computer is connected to the printer Follow the steps below to check the connection using a Ping command A Check the printer s IP address for the connection that you want to check You can check this from the IP Address column of a network status sheet B Display the computer s command prompt screen C Enter the following in the command line and then press Ente...

Page 50: ...f the message appears before its expiration date make sure that the printer s date is configured correctly The message The name of the security certificate does not match appears when accessing Web Config using SSL communication https The printer s IP address entered for Common Name for creating a self signed certificate or CSR does not match with the address entered into the browser Obtain and im...

Page 51: ...ltering you may not be able to communicate with devices because of incorrect settings or trouble with the device or server In this case restore the security settings in order to make settings for the device again or to allow you temporary use Disabling the Security Function from the Printer You can disable IPsec IP Filtering from the printer A Make sure paper is loaded B Press the o and d buttons ...

Page 52: ...e computer Disabling IPsec IP Filtering Using Web Config A Access Web Config and select Network Security Settings IPsec IP Filtering Basic B Select Disable for IPsec IP Filtering in Default Policy C Click Next and then clear Enable this Group Policy for all group policies D Click OK Related Information Accessing Web Config on page 20 Problems Using Network Security Features Forgot a Pre shared Key...

Page 53: ...ddress invalid or has it changed 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 Settings IPsec IP Filtering Basic Group Policy Remote Address Host may not be found Use a static IP address Related Information Accessing Web Con...

Page 54: ... the CSR to a certificate authority Obtain the CA signed certificate again with the CSR Is the CA signed certificate more than 5KB You cannot import a CA signed certificate that is more than 5KB Is the password for importing the certificate correct If you forget the password you cannot import the certificate Related Information Importing a CA signed Certificate on page 35 Cannot Update a Self Sign...

Page 55: ...l Certificate Appears Messages Cause What to do Enter a Server Certificate Cause You have not selected a file to import What to do Select a file and click Import CA Certificate 1 is not entered Cause CA certificate 1 is not entered and only CA certificate 2 is entered What to do Import CA certificate 1 first Invalid value below Cause Unsupported characters are contained in the file path and or pas...

Page 56: ... is valid or check the date and time on your printer Cause The certificate is out of date What to do If the certificate is out of date obtain and import the new certificate If the certificate is not out of date make sure the printer s date and time are set correctly Private key is required Cause There is no paired private key with the certificate What to do If the certificate is the PEM DER format...

Page 57: ...you have the backup file import the certificate again If you obtain a certificate using a CSR created from Web Config you cannot import a deleted certificate again Create a CSR and obtain a new certificate Related Information Deleting a CA signed Certificate on page 36 Importing a CA signed Certificate on page 35 Network Guide Solving Problems 57 ...

Page 58: ...EPSON Epson Device Admin Epson Device Admin Note If the firewall alert appears allow access for Epson Device Admin EpsonNet Print EpsonNet Print is a software to print on the TCP IP network There are features and restrictions listed below The printer s status is displayed on the spooler screen If the printer s IP address is changed by DHCP the printer is still detected You can use a printer locate...

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