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Lexmark MX718 Embedded Web Server--Security: Administrator s Guide - Page 42

Configuring the TCP/IP port access setting, Setting the restricted server list, Settings, Security

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Securing network connections 42 4 Turn off the printer, and then disconnect the Ethernet cable. Wait for at least five seconds, and then turn the printer back on. 5 Check if your printer is connected to the network. Print a network setup page, and then in the Network Card [x] section, see if the status is "Connected." For more information, see the "Verifying printer setup" section of the printer User's Guide. Configuring the TCP/IP port access setting You can control your network device activities by configuring your device to filter out traffic on specific network ports. Protocols (such as FTP, HTTP, and Telnet) can be disabled. Port filtering on devices disables network ports individually. When a port is closed, a device does not respond to traffic on the specified port whether or not the corresponding network application is enabled. We recommend closing any ports that you do not plan to use under standard operation by clearing them. This feature lets you set access settings on the different TCP/IP ports of the device. 1 From the Embedded Web Server, click Settings > Security > TCP/IP Port Access. 2 Click the check box of the TCP/IP port to change its access setting. 3 Click Submit. Setting the restricted server list Devices can be configured to allow connection only from a list of specified TCP/IP addresses. This action blocks all TCP connections from other addresses, protecting the device against unauthorized printing and configuring. 1 From the Embedded Web Server, click Settings > Network/Ports > TCP/IP. 2 In the Restricted Server List field, type up to 50 IP addresses, separated by commas, that are allowed to make TCP connections. 3 From the Restricted Server List Options menu, set the blocking option. 4 Click Submit.

Section	Page
Contents	2
Devices covered in this guide	4
Simple-security devices	4
Advanced-security devices	4
Managing authentication and authorization methods	5
Understanding the basics	5
Authentication and authorization	5
Groups	7
Access Controls	7
Security Templates	7
Accessing the Embedded Web Server	7
Simple-security device access controls	8
Creating a Web page password and applying access control restrictions	8
Creating a PIN and applying access control restrictions	9
Limiting access using Basic Security Setup	9
Advanced-security building blocks	10
Configuring advanced building blocks from the control panel	10
Creating a password building block for advanced security setup	10
Creating a PIN building block for advanced security setup	11
Setting up internal accounts	11
Connecting your printer to an Active Directory domain	13
Using LDAP	15
Using LDAP+GSSAPI	17
Configuring Kerberos 5 for use with LDAP+GSSAPI	19
Using a security template to control function access	20
Managing certificates and other settings	24
Installing a Certificate Authority certificate on the device	24
Configuring the device for certificate information	25
Sample certificate request data	25
Creating a new device certificate	26
Viewing, downloading, and deleting a certificate	26
Setting certificate defaults	27
Setting up a Certificate Authority certificate monitor	27
Downloading the Certificate Authority certificates	28
Managing devices remotely	29
Using HTTPS for device management	29
Setting a backup password	29
Setting up SNMP	30
Configuring security audit log settings	31
Updating firmware	33
Managing other access functions	34
Configuring confidential printing	34
Setting login restrictions	35
Enabling and disabling USB host ports	35
Enabling the security reset jumper	36
Enabling holding faxes	37
Enabling Operator Panel Lock	37
Securing network connections	39
Configuring 802.1X authentication	39
Configuring IP security settings	40
Connecting to a wireless network	41
Configuring the TCP/IP port access setting	42
Setting the restricted server list	42
Securing data	43
Physical lock	43
Disk encryption	44
Checking disk encryption status	45
Erasing settings (non-volatile memory)	45
Disk file wiping	48
Erasing temporary data files from the hard disk	48
Erasing hard disk data	49
Out-of-service wiping	50
Statement of volatility	51
Disposing of a hard disk	51
Erasing volatile memory	52
Erasing non-volatile memory	52
Security solutions	53
Print Release	53
Secure Held Print Jobs	53
Card Authentication	53
Smart Card authentication	54
Security scenarios	55
Scenario: Printer in a public place	55
Scenario: Standalone or small office	56
Scenario: Network running Active Directory	57
Scenario: More security-aware environment (802.1X) and SNMPv3	58
Scenario: Network-based usage restrictions using access card	58
Troubleshooting	60
Login troubleshooting	60
USB device is not supported	60
Make sure that a supported smart card reader is attached	60
Printer home screen fails to return to a locked state when not in use	60
Make sure that the authentication token is installed and running	60
Make sure that Smart Card Authentication is installed and running	60
Login screen does not appear when a smart card is inserted	60
Make sure that the smart card is recognized by the reader	60
KDC and MFP clocks are out of sync	61
Make sure that the date and time settings on the printer are correct	61
Kerberos configuration file is not uploaded	61
Make sure that the Kerberos file has been uploaded	61
Unable to authenticate users	61
Make sure that the Realm specified in the Kerberos settings is in uppercase	61
Domain controller certificate is not installed	61
Make sure that the correct certificate is installed on the printer	61
KDC did not respond within the required time	62
Make sure that the IP address or host name of the KDC is correct	62
Make sure that the KDC is available	62
Make sure that Port 88 is not blocked by a firewall	62
User realm not found in the Kerberos configuration file	62
Make sure that the Windows Domain is specified in the Kerberos settings	62
Cannot find realm on card in the Kerberos configuration file	62
Upload a Kerberos configuration file and make sure that the realm has been added to the file	62
Client is unknown	63
Make sure that the Domain Controller information is correct	63
Login does not respond at “Getting User Info”	63
User is logged out automatically	63
Increase the Panel Login Timeout interval	63
LDAP troubleshooting	63
LDAP lookups take a long time and then fail	63
Make sure that Port 389 (non-SSL) and Port 636 (SSL) are not blocked by a firewall	63
Make sure that the LDAP search base is not too broad in scope	63
LDAP lookups fail almost immediately	64
Make sure that the Address Book Setup contains the host name for the LDAP server	64
Make sure that the Address Book Setup settings are correct	64
Narrow the LDAP search base to the lowest possible scope that includes all necessary users	64
Make sure that the LDAP attributes for the user e-mail address and home directory are correct	64
Held Jobs / Print Release Lite troubleshooting	64
Cannot use the Held Jobs / Print Release feature	64
Add the user to the appropriate Active Directory group	64
Cannot determine Windows user ID	64
Make sure that Smart Card Authentication sets the user ID for the session	64
No jobs available for user	65
Make sure that the Smart Card Authentication sets the correct user ID	65
Make sure that the jobs were sent to the correct printer and were printed	65
Jobs are printing immediately	65
Make sure that Secure Held Print Jobs is installed and running	65
Make sure that all jobs are required to be held	65
Appendix	66
Appendix A: CA file creation	66
Appendix B: CA-Signed Device Certificate creation	66
Appendix C: Automatic Certificate Enrollment Application	66
Appendix D: Access controls	68
Appendix E: Common Criteria configuration	70
Overview	70
Supported printers	71
Before configuring the printer (required)	72
Checking physical interfaces and installed firmware	72
Attaching a lock	72
Encrypting the hard disk	73
Disabling the USB buffer	73
Installing the minimum Common Criteria configuration	74
Configuring disk wiping	74
Enabling the backup password (optional)	74
Creating user accounts	74
Creating security templates	75
Controlling access to device functions	75
Disabling home screen icons	77
Other settings required for Common Criteria configuration	78
Disabling the AppleTalk protocol	78
Shutting down port access	78
Network Time Protocol	79
Fax	79
Configuring and securing the application	80
Securing access to the home screen	81
Configuring user access for Common Criteria	81
Notices	84
Edition notice	84
Trademarks	84
GOVERNMENT END USERS	84
GifEncoder	85
ZXing 1.7	85
Apache License Version 2.0, January 2004	85
Glossary of Security Terms	89

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Turn oﬀ the printer, and then disconnect the Ethernet cable. Wait for at least ﬁve seconds, and then turn the

printer back on.

Check if your printer is connected to the network. Print a network setup page, and then in the Network Card

[x] section, see if the status is “Connected.”

For more information, see the “Verifying printer setup” section of the printer

User’s Guide

Conﬁguring the TCP/IP port access setting

You can control your network device activities by configuring your device to filter out traffic on specific network

ports. Protocols (such as FTP, HTTP, and Telnet) can be disabled.

Port ﬁltering on devices disables network ports individually. When a port is closed, a device does not respond

to traﬃc on the speciﬁed port whether or not the corresponding network application is enabled. We recommend

closing any ports that you do not plan to use under standard operation by clearing them.

This feature lets you set access settings on the diﬀerent TCP/IP ports of the device.

From the Embedded Web Server, click

Settings

Security

TCP/IP Port Access

Click the check box of the TCP/IP port to change its access setting.

Click

Submit

Setting the restricted server list

Devices can be conﬁgured to allow connection only from a list of speciﬁed TCP/IP addresses. This action blocks

all TCP connections from other addresses, protecting the device against unauthorized printing and conﬁguring.

From the Embedded Web Server, click

Settings

Network/Ports

TCP/IP

In the Restricted Server List ﬁeld, type up to 50 IP addresses, separated by commas, that are allowed to

make TCP connections.

From the Restricted Server List Options menu, set the blocking option.

Click

Submit

Securing network connections