The Linux iptables comes with MATCH EXTENSIONS which can use extended packet matching modules. The multiport match module matches a set of source or destination ports. Up to 15 ports can be specified. A port range (port:port) counts as two ports. It can only be used in conjunction with -p tcp or -p udp options.
Syntax
The syntax is as follows for the destination port:The syntax is as follows for the source port:
iptables -A tableName -p tcp --match multiport --dports port1,port2 -j ACCEPT
iptables -A tableName -p udp --match multiport --dports port1,port2 -j DROP
iptables -A tableName -p protocol --match multiport --dports portRange1:PortRange2 -j ACCEPT
iptables -A tableName -p tcp --match multiport --sports port1,port2 -j ACCEPT
iptables -A tableName -p udp --match multiport --sports port1,port2 -j DROP
iptables -A tableName -p protocol --match multiport --sports portRange1:PortRange2 -j ACCEPT
Examples
The following will accept all traffic from TCP port 80,22,53:/sbin/iptables -A INPUT -p tcp --match multiport --dports 80,22,53 -j ACCEPTThe following will accept 1024 to 3000 port range:
/sbin/iptables -A INPUT -p tcp --match multiport --dports 1024:3000 -j ACCEPTFinally, save the changes:
# service iptables saveOR
# iptables-save > /path/to/your/iptables/settings/file
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