#For each IP you need this command and this rule:
/sbin/ifconfig vlan1:0 208.x.x.130 netmask 255.255.255.224
/usr/sbin/iptables -t nat -I PREROUTING 2 -d 208.x.x.130 -j WANPREROUTING
#For each open port you need rules like these two:
/usr/sbin/iptables -t nat -A WANPREROUTING -p tcp -d 208.x.x.130 --dport 80 -j DNAT --to-destination 192.168.1.130:80
/usr/sbin/iptables -I wanin -p tcp -m tcp -d 192.168.1.130 --dport 80 -j ACCEPT
Insira essas regras na guia "Firewall" em "Administração". Funciona para mim.