Moxa Technologies user manual NFS Network File System, Setting up UC-7420/7410 as an NFS Server

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UC-7420/7410 User’s Manual

Managing Communication

Setting up a Machine for Incoming PPP Connections

This first example applies to using a modem, and requiring authorization with a username and password.

pppd/dev/ttyM0 115200 crtscts modem 192.168.16.1:192.168.16.2 login auth

You should also add the following line to the file /etc/ppp/pap-secrets:

* * “” *

The first star (*) lets everyone login. The second star (*) lets every host connect. The pair of double quotation marks (“”) is to use the file /etc/passwd to check the password. The last star (*) is to let any IP connect.

The following example does not check the username and password:

pppd/dev/ttyM0 115200 crtscts modem 192.168.16.1:192.168.16.2

NFS (Network File System)

The Network File System (NFS) is used to mount a disk partition on a remote machine, as if it were on a local hard drive, allowing fast, seamless sharing of files across a network. NFS allows users to develop applications for UC-7420/7410, without worrying about the amount of disk space that will be available. UC-7420/7410 supports NFS protocol for both client and server.

NOTE Click on the following links for more information about NFS:

http://www.tldp.org/HOWTO/NFS-HOWTO/index.html

http://nfs.sourceforge.net/nfs-howto/client.html

http://nfs.sourceforge.net/nfs-howto/server.html

Setting up UC-7420/7410 as an NFS Server

By default, UC-7420/7410 enables the service /etc/init.d/nfs-user-server. The service link file S25nfs-user-serveris located in the directory /rc.d/rc2.d-rc5.d.

Edit the NFS server configuration file /etc/exports to set up the remote host (NTF client) list and access rights for a specific directory. The file formats are shown below:

#vi /etc/exports

File Format:

directory machine1(option11,option12) machine2(option21,option22) directory

The directory that will be shared with the NFS Client.

machine1 and machine2

Client machines that will have access to the directory. A machine can be listed by its DNS address or IP address (e.g., machine.company.com or 192.168.0.8).

optionxx

The option list for a machine describes the kind of access the machine will have. Important options are:

ro

Read only. This is the default.

rw

Readable and Writeable.

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Contents UC-7420/7410 User’s Manual Third Edition, JuneCopyright Notice TrademarksDisclaimer Table of Contents Chapter UC Finder Appendix B Windows Tool Chain Introduction Introduction ‰ Hardware IntroductionOverview Package ChecklistProduct Features UC-7410-LXProduct Hardware Specifications Appearance and Dimensions Hardware IntroductionAppearance Dimensions Hardware Block Diagram LED IndicatorsLED Name Color Meaning Reset to default Button Reset-type ButtonsReset Button Real Time ClockPlacement Options Wall or CabinetWiring Requirements Hardware Connection DescriptionDIN-Rail Mounting Pin Signal Connecting the PowerConnecting to the Network Grounding UC-7420/7410CompactFlash Connecting to a Serial DeviceConnecting to the Console Port Pin RS-232 RS-422 RS-485Software Introduction Software ArchitectureJournaling Flash File System JFFS2 Software PackageSoftware Version Comparison Table Protocol stacks and utilities Directory Change‰ Configuring the Ethernet Interface Getting StartedPowering on UC-7420/7410 Connecting UC-7420/7410 to a PCSerial Console 192.168.3.127 255.255.255.0 Default IP Address NetmaskTelnet Console 192.168.4.127 255.255.255.0SSH Console Windows UsersLinux Users Configuring the Ethernet InterfaceModifying Network Settings with the Serial Console Static IP addressesDynamic IP addresses Default IP address is 192.168.5.127, netmask Configuring the Wlan via the Pcmcia InterfaceModifying Network Settings over the Network IEEE802.11b#vi /etc/wlan/wlancfg-any IEEE802.11g Setting Explanation SettingKey1Str, Key2Str, Key3Str, Key4Str-Sets strings Key1 to Key4 TurboRate-Enables or disables TurboRate Checking the Flash Memory Space Installing the Tool Chain LinuxTest Program-Developing Hello.c StepCompiling Hello.c You should receive the following responseTesting Environment Developing Your First ApplicationUploading Hello to UC-7420/7410 and Running the Program Compiling tcps2.c #mount -t iso9660 /dev/cdrom /mnt/cdromUploading tcps2-release and Running the Program PuTTY#jobs // use this command to check if the program is running Testing Procedure Summary UC-7420/7410 User’s ManualUC-7420/7410 User’s Manual ‰ System Version Information ‰ System Image Backup Managing Embedded LinuxUpgrading the Firmware System Image BackupSystem Version Information Upgrading the firmware will erase all data on the Flash ROM#upramdisk #cd /mnt/ramdisk Loading Factory Defaults Backing Up the User File System Firmware versions earlier than V1.5 not includingFirmware version V1.5 and later versions Enabling and Disabling Daemons UC-7420/7410 User’s Manual Managing Embedded Linux Setting the Run-Level Adjusting the System Time Setting the Time ManuallyExample shell script to update the system time periodically NTP ClientUpdating the Time Automatically Enable the cron daemon manually Cron-daemon to Execute Scheduled CommandsChange mode of fixtime.sh Enable cron when the system boots upConnecting Peripherals USB Mass StorageCF Mass Storage Managing Communications ‰ Iptables ‰ NATEnabling the Telnet/ftp server Web Service-ApacheTelnet / FTP Disabling the Telnet/ftp serverUsr/www/cgi-bin Saving a Web Page to the CF Card Use the following commands to restart the Apache web server Iptables Local Host Packets Usage Observe and erase chain rulesDefine policy for chain rules ExamplesAppend or delete rules IptmacEnabling NAT at Bootup NAT ExampleDial-up Service-PPP Example 2 Connecting to a PPP server over a hard-wired link How to check the connection UP Loopback RunningNFS Network File System Setting up UC-7420/7410 as an NFS ServerSetting up a Machine for Incoming PPP Connections #vi /etc/exportsSetting up UC-7420/7410 as an NFS Client Mail Steps 2Open VPN Internet IFS=‘ Create link symbols to enable this script at boot time Destination Gateway Genmsk Flags Metric Use Iface Now ping Host B from Host a by typing Setup 3 Routed IP Destination Gateway Genmsk Flags Metric Use Iface Programmer’s Guide Address Size Contents Flash Memory MapLinux Tool Chain Introduction Cross Compiling Applications and Libraries Debugging with GDBObtaining help Tools Available in the Host EnvironmentDevice API RTC Real Time ClockBuzzer WDT Watch Dog Timer Input Int fd File handle from swtdopen return value Output Special Note User application example ExampleSwtddisableswtdfd Int mainint argc, char *argv Pidt sonpid Example to set the baud rate Example to get the baud rateSpecial Note KeyPadBaud rate inaccuracy ExamplesMake File Example UC Finder Installing the Software Windows UC FinderUC-7420/7410 User’s Manual UC Finder Broadcast Search Linux ucfinder File manager System CommandsBusybox V0.60.4 Linux normal command utility collection EditorProcess OtherMoxa special utilities Windows Tool Chain Introduction Introduction Installation Procedure Select the Root DirectoryUC-7420/7410 User’s Manual Windows Tool Chain Introduction UC-7420/7410 User’s Manual Windows Tool Chain Introduction Using the Bash Shell GDB debug tool-Insight UC-7420/7410 User’s Manual Windows Tool Chain IntroductionUC-7420/7410 User’s Manual Windows Tool Chain Introduction Service Information Moxa Internet Services Following services are providedProblem Report Form Moxa Product † UC-7410-LX † UC-7420-LX Serial NumberProduct Return Procedure