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EM-1240-LX User’s Manual Configuring the EM-1240-LX
The EM-1240-LX supports the following sub-modules. Be sure to use the module that matches
your application. You must load a module before you can use it. Use the insmod command to load
a module.
x_tables xt_conntrack xt_helper xt_mark
xt_pkttype xt_state xt_tcpudp xt_CLASSIFY
xt_dccp xt_length xt_MARK xt_quota
xt_statistic xt_comment xt_dscp xt_multiport
xt_realm xt_string xt_connbytes xt_esp
xt_mac xt_NFQUEUE xt_sctp xt_tcpmss
xt_limit
arptable_filter ip_nat iptable_raw ipt_hashlimit
ipt_owner ipt_time arp_tables ip_nat_snmp_basic
ip_tables ipt_iprange ipt_recent ipt_tos
arpt_mangle ip_nat_tftp ipt_addrtype ipt_layer7
ipt_REDIRECT ipt_TOS ip_nat_amanda iptable_filter
ipt_ah ipt_LOG ipt_REJECT ipt_ttl
ip_nat_ftp iptable_mangle ipt_ecn ipt_MASQUERADE
ipt_SAME ipt_TTL ip_nat_irc iptable_nat
ipt_ECN ipt_NETMAP ipt_TCPMSS ipt_ULONG
NOTE The EM-1240-LX does NOT support IPV6 and ipchains.
IPTABLES supports packet filtering or NAT. Take care when setting up the IPTABLES rules. If
the rules are not correct, remote hosts that connect via a LAN or PPP may be denied access. We
recommend using the Serial Console to set up IPTABLES.
Click on the following links for more information about iptables.
http://www.linuxguruz.com/iptables/
http://www.netfilter.org/documentation/HOWTO//packet-filtering-HOWTO.html
Since the IPTABLES command is very complex, to illustrate the IPTABLES syntax we have
divided our discussion of the various rules into three categories: Observe and erase chain rules,
Define policy rules, and Append or delete rules.
Observe and erase chain rules
Usage:
# iptables [-t tables] [-L] [-n]
-t tables: Table to manipulate (default: ‘filter’); example: nat or filter.
-L [chain]: List List all rules in selected chains. If no chain is selected, all chains are listed.
-n: Numeric output of addresses and ports.
# iptables [-t tables] [-FXZ]
-F: Flush the selected chain (all the chains in the table if none is listed).
-X: Delete the specified user-defined chain.
-Z: Set the packet and byte counters in all chains to zero.
4-5
Содержание
- Em 1240 lx user s manual 1
- Fifth edition february 2009 1
- Www moxa com product 1
- Copyright notice 2
- Disclaimer 2
- Em 1240 lx user s manual 2
- Technical support contact information www moxa com support 2
- Trademarks 2
- Table of contents 3
- Introduction 5
- Overview 6
- Package checklist 6
- Product features 6
- Hardware specifications 7
- Product specifications 7
- Software specifications 8
- Appearance 9
- Em 1240 embedded module development kit 9
- Em 1240 lx user s manual introduction 9
- Hardware block diagram 9
- Em 1240 development kit 10
- Em 1240 embedded module 10
- Em 1240 lx user s manual introduction 10
- Dimensions 11
- Installing the em 1240 lx 11
- Led indicators 12
- Wiring requirements 12
- Connecting data transmission cables 13
- Connecting the power 13
- Connecting to the network 13
- Grounding the em 1240 lx 13
- Connecting to a serial device 14
- Serial console port 14
- Additional functions 15
- Internal sd socket 15
- Reset button 15
- Real time clock 16
- Getting started 17
- Connecting the em 1240 lx to a pc 18
- Console port 18
- Powering on the em 1240 lx 18
- Telnet 19
- Configuring the ethernet interface 20
- Developing your applications 22
- Installing a secure digital sd memory card 22
- Compiling hello c 23
- Installing the em 1240 lx tool chain 23
- Uploading hello to the em 1240 lx 24
- Running hello on the em 1240 lx 25
- Make file example code 26
- Software package 27
- Em 1240 lx software architecture 28
- Journaling flash file system jffs2 29
- Em 1240 lx software package 30
- Configuring the em 1240 lx 32
- Enabling and disabling daemons 33
- How to enable disable etc inittab www server 33
- How to enable disable telnet ftp server 33
- How to enable network time protocol 33
- How to update the system time periodically with network time protocol 33
- Adding a web page 34
- Iptables 34
- Observe and erase chain rules 36
- Append or delete rules 37
- Define policy for chain rules 37
- Enabling nat at bootup 38
- Nat example 38
- Configuring dial in dial out service 39
- Configuring pppoe 39
- Connect using a modem 39
- Dial in service 39
- Dial out service 39
- Direct cable connection 39
- Dynamic driver module load unload 40
- How to mount a remote nfs server 40
- Upgrading the kernel 41
- Upgrading the root file system user directory 42
- Autostarting user applications on bootup 43
- Checking the kernel and root file system versions 43
- Loading factory defaults 43
- Em 1240 lx device api 44
- Buzzer 45
- Rtc real time clock 45
- Uart interface 45
- Api list 46
- Moxa gpio api 46
- How to use the gpio 47
- Gpio library source code 48
- Limits 48
- A system commands 52
- Editor 52
- File manager 52
- System commands 52
- Μclinux normal command utility collection 52
- Moxa special utilities 53
- Network 53
- Process 53
- B snmp agent with mib ii rs 232 like group 54
- Snmp agent with mib ii rs 232 like group 54
- C em 1240 lx faq 57
- Em 1240 lx faq 57
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