Moxa V2401-CE [41/108] Iptables modules

V2401/2402 Series Linux User’s Manual Managing Communications

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IPTABLES Modules

The V2401/2402-LX supports the following sub-modules. Be sure to use the module that matches

your application.

arptable_filter.ko arp_tables.ko arpt_mangle.ko

ip_conntrack_amanda.

ip_conntrack_ftp.ko ip_conntrack_h323.ko ip_conntrack_irc.ko ip_conntrack.ko

ip_conntrack_netbios_ns

.ko

ip_conntrack_netlink.ko ip_conntrack_pptp.ko

ip_conntrack_proto_sctp

.ko

ip_conntrack_sip.ko ip_conntrack_tftp.ko ip_nat_amanda.ko ip_nat_ftp.ko

ip_nat_h323.ko ip_nat_irc.ko ip_nat.ko ip_nat_pptp.ko

ip_nat_sip.ko ip_nat_snmp_basic.ko ip_nat_tftp.ko ip_queue.ko

iptable_filter.ko iptable_mangle.ko iptable_nat.ko iptable_raw.ko

ip_tables.ko ipt_addrtype.ko ipt_ah.ko ipt_CLUSTERIP.ko

ipt_dscp.ko ipt_DSCP.ko ipt_ecn.ko ipt_ECN.ko

ipt_hashlimit.ko ipt_iprange.ko ipt_LOG.ko ipt_MASQUERADE.ko

ipt_NETMAP.ko ipt_owner.ko ipt_recent.ko ipt_REDIRECT.ko

ipt_REJECT.ko ipt_SAME.ko ipt_TCPMSS.ko ipt_tos.ko

ipt_TOS.ko ipt_ttl.ko ipt_TTL.ko ipt_ULOG.ko

The basic syntax to enable and load an IPTABLES module is as follows:

# lsmod

# modprobe ip_tables

# modprobe iptable_filter

#modprobe iptable_mangle

#modprobe iptable_nat

Use lsmod to check if the ip_tables module has already been loaded in the V2401/2402-LX. Use

modprobe to insert and enable the module.

Use iptables, iptables-restore, iptables-save to maintain the database.

ATTENTION

IPTABLES plays the role of packet filtering or NAT. Be careful when setting up the IPTABLES

rules. If the rules are not correct, remote hosts that connect via a LAN or PPP may be denied. We

recommend using the VGA console to set up the IPTABLES. Click on the following links for

more information about IPTABLES.

http://www.linuxguruz.com/iptables/

http://www.netfilter.org/documentatio

n/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.