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Optional Equipment and System Requirements

Printing or Sending a Fax from a Computer

Using E-Mail/I-Fax

Sending Data

Checking Your Network Environment

Network Environment Setup Procedures

Connecting the Machine to a Computer or Network

Specifying Network Settings from the Touch Panel Display

Interface Settings

Communication Environment Setup

IEEE802.1X Authentication Settings

Selecting the IEEE802.1X Authentication Method

TCP/IP Network Setup Procedures

Protocol Settings

TCP/IPv4 Settings

TCP/IPv6 Settings

Settings Common to TCP/IPv4 and TCP/IPv6

Confirming TCP/IPv4 Settings (PING Command)

Confirming TCP/IPv6 Settings (PING Command)

Setting the Key Pair Used With SSL Encrypted Communications

IPSec Settings

Registering a Security Policy
Editing a Security Policy

Startup Time Settings

Setting Up a Computer for Printing/Sending a Fax

Printer Connection Method (LPD/Raw)

Windows 2000/XP/Server 2003/Server 2008/Vista/7/Server 2008 R2
Mac OS X 10.3.9 or Later
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Printer Connection Method (IPP/IPPS)

Printer Connection Method (FTP)

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Setting Up a Computer as a File Server

FTP Server Settings

WebDAV Server Settings

NetWare Network Setup Procedures

NetWare Print Service Settings

Setup Using NetWare Administrator or PCONSOLE

Protocol Settings

Setting Up a Computer for Printing/Sending a Fax

SMB/CIFS Network Setup Procedures

Protocol Settings

Setting Up a Computer for Printing/Sending a Fax

Connecting to a TCP/IP Network

Connecting to an SMB/CIFS Network

Printer Connection Method

Setting Up a Computer as a File Server

Connecting to a TCP/IP Network

Connecting to an SMB/CIFS Network and Configuring a Shared Folder

AppleTalk Network Setup Procedures

Protocol Settings

Setting Up a Computer for Printing

Network Connection Problems and Remedies

Printing Problems and Remedies

Data Sending/File Sharing Problems and Remedies

Encrypted SSL Data Communication Problems and Remedies

Confirming Settings

Checking the Block Log

Obtaining the Public Key of the Machine to Use SSL with Windows Server 2008/Vista/7/Server 2008 R2

Top » Network » Network Connection Problems and Remedies
Network Connection Problems and Remedies
06RH-1XC
This section describes the causes of network connection problems, and how to resolve them.
Unable to Set up a Network
Cause
[Confirm Network Connection Set. Changes] is set to 'Off'.
Remedy
Set [Confirm Network Connection Set. Changes] to 'On'.
The machine automatically connects to a destination other than the intended destination via its dial-up access (when a dial-up router is connected to your network).
Cause
The machine periodically or temporarily communicates with devices on your network. If a dial-up router or NetWare file server is on the network to which the machine is connected, the machine connects to a destination other than the intended destination, depending on the settings of the machine or dial-up router. This may result in subscriber line charges and call charges.
Example:
The file or mail server's host name or IP address set on the machine does not exist on the network.
The DNS server exists on an external network.
You attempt to access a device connected to an external network, if the device's information is set on the DNS server on the network to which the machine is connected.
Remedy
Check the following:
If the dial-up router does not have to send packets via broadcast, change the router settings to ensure that it sends packets via a method other than broadcast. If dial-up router has to send packets via broadcast, check that the settings are correct.
Check that the file or mail server's host name or IP address set on the machine is correct.
If you attempt to access a device on the network to which the machine is connected, with the DNS server on an external network, set the destination using an IP address, not a host name.
If information about a device on an external network is set on the DNS server on the network to which the machine is connected, check the settings.
Detailed information concerning the machine cannot be set.
Cause 1
Communication via the IP address of a computer on which you intend to use the Remote UI or utility is not permitted in [Firewall Settings] on the Network screen.
Remedy
If communication via the IP address of the computer on which you intend to use the Remote UI or utility is not permitted in [Firewall Settings] on the machine, you cannot browse information pertaining to the machine or configure the settings. Configure [Firewall Settings] on the machine so that communication via the IP address of the computer on which you intend to use the Remote UI or utility is permitted. (See steps 13 to 16 in "TCP/IPv4 Settings," or steps 9 to 11 in "TCP/IPv6 Settings.")
Cause 2
[Dedicated Comm. Settings] or [Dedicated Port Settings] is set to 'Off'.
Remedy
Specify the following settings according to "Communication Environment Setup."
Press [On] for <Use SNMP v. 1> → [Dedicated Comm. Settings]. Press [On] for <Dedicated Community> → [Read/Write] for <MIB Access Permission>.
Press [On] for [Dedicated Port Settings].
Cause 3
The SNMP community name does not match.
Remedy
If you use an SNMP community name different from the one stored in the machine to access the machine from a utility, the utility will not detect the machine. In this case, check the SNMP community name. (See "Communication Environment Setup.")
Cause 4
Invalid cache data is remaining.
Remedy
If the Remote UI does not start properly and an error message appears on your Web browser, delete the cache files.
Cause 5
[Sleep Mode Energy Use] is set to [Low] and the machine is in the Sleep mode.
Remedy
Press (Energy Saver) to cancel the Sleep mode, or set [Sleep Mode Energy Use] to [High]. (See "Energy Consumption in the Sleep Mode.")