Moxa Technologies user manual Configuring the EM-1240-LX, Iptables NAT

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Configuring the EM-1240-LX

In this chapter, we describe how to configure the EM-1240-LX Series products. The following topics are covered in this chapter:

Enabling and Disabling Daemons

Adding a Web Page

IPTABLES

NAT

¾NAT Example

¾Enabling NAT at Bootp

Configuring Dial-in/Dial-out Service

¾Dial-out Service

¾Dial-in Service

Configuring PPPoE

How to Mount a Remote NFS Server

Dynamic Driver Module Load/Unload

Upgrading the Kernel

Upgrading the Root File System & User Directory

User Directory Backup—EM-1240-LX to PC

Loading Factory Defaults

Mirroring the Application Program and Configuration

Autostarting User Applications on Bootup

Checking the Kernel and User Directory Versions

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Contents EM-1240-LX User’s Manual First Edition, NovemberCopyright Notice Table of Contents Chapter EM-1240-LX Device API Introduction Overview Package ChecklistProduct Features EM-1240-LXProduct Specifications Hardware SpecificationsSoftware Specifications Hardware Block Diagram Appearance EM-1240 Development Kit Embedded ModuleEM-1240 Embedded Module EM-1240 Development Kit Dimensions LED Indicators Installing the EM-1240-LXWiring Requirements Connecting the Power Connecting Data Transmission CablesGrounding the EM-1240-LX Connecting to the Network Connecting to a Serial DeviceAdditional Functions Reset ButtonInternal SD Socket Serial Console PortReal-time Clock Getting Started Connecting the EM-1240-LX to a PC Powering on the EM-1240-LXConsole Port 192.168.3.127 255.255.255.0 Default IP Address Default NetmaskTelnet 192.168.4.127 255.255.255.0Configuring the Ethernet Interface Ifconfig eth0 Dhcpcd -p -a eth0 & dhcpcd -p -a eth1Installing a Secure Digital SD Memory Card Step Installing the EM-1240-LX Tool ChainDeveloping Your Applications #mount -t iso9660 /dev/cdrom /mnt/cdromEM-1240-LX User’s Manual Compiling Hello.c PATH=/usr/local/arm-elf/bin$PATHUploading Hello to the EM-1240-LX #makeRunning Hello on the EM-1240-LX # chmod 755 hello #./helloMake File Example Code Cflags =Software Package EM-1240-LX Software Architecture Journaling Flash File System JFFS2 Flash Context Flash Address Size Access controlAdditional information about JFFS2 is available at EM-1240-LX Software Package Bin DevPtyp0 Ppp Pio Rtc Ram1 Ram0 Null Kmem Mem Cua0 Console Tty Configuring the EM-1240-LX ‰ Iptables ‰ NATExample default enable Enabling and Disabling DaemonsDefault Home Page address Adding a WebLocal Host Packets Usage Define policy rules, and Append or delete rulesExamples Define policy for chain rules Enabling NAT at Bootup NAT ExampleDial-out Service Configuring Dial-in/Dial-out ServiceConfiguring PPPoE Dial-in ServiceHow to Mount a Remote NFS Server Dynamic Driver Module Load/UnloadUpramdisk Ramdiskupkernel em1240-1.x.bin /ramdiskrebootUpgrading the Kernel Cd ramdiskUpgrading the Root File System & User Directory Upramdisk Cd ramdiskUser Directory Backup-EM-1240-LX to PC Ramdiskbackupfs /ramdisk/usrdisk-backupAutostarting User Applications on Bootup Loading Factory DefaultsMirroring the Application Program and Configuration Checking the Kernel and Root File System VersionsFsversion Cat /etc/versionEM-1240-LX Device API Buzzer RTC Real-time ClockUart Interface UC Finder Windows UC Finder EM-1240-LX User’s Manual UC Finder EM-1240-LX User’s Manual UC Finder Linux UC Finder File manager System CommandsBusybox µClinux normal command utility collection EditorOther NetworkProcess Moxa Special UtilitiesSnmp Agent with MIB II & RS-232 Like Group Snmp Agent with MIB II & RS-232 Like Group Ip MIB Tcp MIB Udp MIBSnmp MIB RFC1317 RS-232 like group supported variables Rs232 MIBEM-1240-LX FAQ Service Information Moxa Internet Services Following services are providedProblem Report Form Moxa Product † EM-1240-LX Serial NumberProduct Return Procedure