Moxa V2406-LX [3/81] Table of contents

Table of Contents
1. Introduction ...................................................................................................................................... 1-1
Overview ........................................................................................................................................... 1-2
Software Specifications........................................................................................................................ 1-2
Software Components ......................................................................................................................... 1-3
2. Software Configuration ..................................................................................................................... 2-1
The Read-only File System ................................................................................................................... 2-2
Starting from a VGA Console ................................................................................................................ 2-2
Display on Single or Multiple Outputs .................................................................................................... 2-2
Startup with Desktop Environment ........................................................................................................ 2-5
Connecting from a Telnet Console ......................................................................................................... 2-6
Connecting from an SSH Console .......................................................................................................... 2-6
Windows Users ........................................................................................................................... 2-7
Linux Users ................................................................................................................................ 2-7
Adjusting the System Time .................................................................................................................. 2-7
Setting the Time Manually ............................................................................................................ 2-7
NTP Client .................................................................................................................................. 2-8
Updating the Time Automatically ................................................................................................... 2-9
Enabling and Disabling Daemons .......................................................................................................... 2-9
Setting the Run-Level ........................................................................................................................ 2-11
CronDaemon for Executing Scheduled Commands .............................................................................. 2-12
Inserting a USB Storage Device into the Computer ............................................................................... 2-13
Inserting a Compact Flash Card .......................................................................................................... 2-14
Checking the Linux Version ................................................................................................................ 2-14
APTInstalling and Removing Packages .............................................................................................. 2-14
Device Suspend ................................................................................................................................ 2-16
Wake on LAN ................................................................................................................................... 2-17
3. Managing Communications ............................................................................................................... 3-1
Detecting Network Interfaces ............................................................................................................... 3-2
Changing the Network Settings ............................................................................................................ 3-2
Changing the “interfaces” Configuration File ................................................................................... 3-2
Static IP Address ................................................................................................................. 3-3
Dynamic IP Address using DHCP ............................................................................................ 3-3
Adjusting IP Addresses with “ifconfig” ............................................................................................ 3-3
Serial Port Operation Mode .................................................................................................................. 3-3
Telnet/FTP Server ............................................................................................................................... 3-4
Enabling the Telnet/FTP Server ..................................................................................................... 3-4
Disabling the Telnet/FTP Server ..................................................................................................... 3-5
DNS Client ......................................................................................................................................... 3-5
etc/hostname ............................................................................................................................. 3-5
etc/resolv.conf ............................................................................................................................ 3-5
etc/nsswitch.conf ........................................................................................................................ 3-6
Apache Web Server ............................................................................................................................. 3-6
Default Homepage ....................................................................................................................... 3-6
Disabling the CGI Function ........................................................................................................... 3-7
Saving Web Pages to a USB Storage Device .................................................................................... 3-7
IPTABLES .......................................................................................................................................... 3-9
IPTABLES Hierarchy ................................................................................................................... 3-10
IPTABLES Modules ..................................................................................................................... 3-10
Observe and Erase Chain Rules ................................................................................................... 3-11
Define Policy for Chain Rules ....................................................................................................... 3-11
Append or Delete Rules .............................................................................................................. 3-12
NAT (Network Address Translation) ..................................................................................................... 3-13
NAT Example ............................................................................................................................ 3-13
Enabling NAT at Bootup .............................................................................................................. 3-13
PPP (Point to Point Protocol) ............................................................................................................... 3-14
Connecting to a PPP Server over a Simple Dial-up Connection ......................................................... 3-14
Connecting to a PPP Server over a Hard-wired Link ........................................................................ 3-15
Checking the Connection ............................................................................................................ 3-16
Setting up a Machine for Incoming PPP Connections ...................................................................... 3-17
PPPoE .............................................................................................................................................. 3-18
NFS (Network File System) Client ....................................................................................................... 3-20
SNMP (Simple Network Management Protocol) ..................................................................................... 3-20
OpenVPN ......................................................................................................................................... 3-21
Ethernet Bridging for Private Networks on Different Subnets ........................................................... 3-21
Ethernet Bridging for Private Networks on the Same Subnet ........................................................... 3-24
Routed IP ................................................................................................................................. 3-25

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