NAT WAN IP to internal range?
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Hello, I am having a bit of trouble following the documentation on assigning a range of NATed IPs. My router has a several External IP’s assigned to the WAN interface: WANIF=`get_wanface` ifconfig $WANIF:1 a.b.c.241 netmask 255.255.255.248 broadcast a.b.c.247 ifconfig $WANIF:2 a.b.c.242 netmask 255.255.255.248 broadcast a.b.c.247 ifconfig $WANIF:3 a.b.c.243 netmask 255.255.255.248 broadcast a.b.c.247 Then I have successfully configured a single internal machine natted with the 241 address like so: iptables -t nat -I PREROUTING -d a.b.c.241 -j DNAT --to-destination 192.168.1.69 iptables -t nat -I POSTROUTING -s 192.168.1.69 -j SNAT --to-source a.b.c.241 That works great, but I need the second IP (242) to be the external IP for a _range_ of internal IPs I have tried this however it does not appear to work: iptables -t nat -A PREROUTING -d a.b.c.242 -j DNAT --to-destination 192.168.1.100-192.168.1.150 iptables -t nat -A POSTROUTING -s 192.168.1.100-192.168.1.150 -j SNAT --to-source 220.127.116.11 This article suggests (at least to me) that this is possible: http://www.cyberciti.biz/tips/linux-iptables-how-to-specify-a-range-of-ip-addresses-or-ports.html The ‘Nat how to docs’ seem to suggest that a range can be specified, but I suspect my usage is wrong? http://www.netfilter.org/documentation/HOWTO//NAT-HOWTO-6.html#ss6.2 How do I NAT a WAN IP to a range of internal IPs? Thanks and kind regards, Andrew Stone. -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html