All, I tried the suggested solution with no luck... Also, I did not hear from anybody hosting DNS... Does anybody else have any ideas for the original post? Original post bellow. Best regards, Erick Sanz > > > All, > > I have multiple interfaces in a system (eth1, eth1:0, > eth1:1 and eth1:2), > and I need to forward things for several ports to them. > > Since IPtables do not understand eth1:1, my rules look > something like > this: > > # Ftp server > iptables -t nat -A PREROUTING -p tcp -d $FTP_IPADDR --dport > 21 -j DNAT --to $FTP_SERVER > iptables -A FORWARD -i eth1 -p tcp -d $FTP_SERVER --dport 21 > -m state --state NEW -j ACCEPT > > # Web server > iptables -t nat -A PREROUTING -p tcp -d $WEB_IPADDR --dport > 80 -j DNAT --to $WEB_SERVER > iptables -A FORWARD -i eth1 -p tcp -d $WEB_SERVER --dport 80 > -m state --state NEW -j ACCEPT > > eth1 is my WAN interface... Is this correct? > > Also, for the life of my I don't seem to be able to get DNS > resulution to my > DNS server; my rules are as follows: > > iptables -t nat -A PREROUTING -p udp -d $DNS_1 --dport 53 -j > DNAT --to $DNS_SERVER1 > iptables -t nat -A PREROUTING -p tcp -d $DNS_1 --dport 53 -j > DNAT --to $DNS_SERVER1 > > iptables -t nat -A PREROUTING -p udp -d $DNS_2 --dport 53 -j > DNAT --to $DNS_SERVER2 > iptables -t nat -A PREROUTING -p tcp -d $DNS_2 --dport 53 -j > DNAT --to $DNS_SERVER2 > > iptables -A FORWARD -i eth1 -p udp -d $DNS_SERVER1 --dport 53 > -m state --state NEW -j ACCEPT > iptables -A FORWARD -i eth1 -p tcp -d $DNS_SERVER1 --dport 53 > -m state --state NEW -j ACCEPT > > iptables -A FORWARD -i eth1 -p udp -d $DNS_SERVER2 --dport 53 > -m state --state NEW -j ACCEPT > iptables -A FORWARD -i eth1 -p tcp -d $DNS_SERVER2 --dport 53 > -m state --state NEW -j ACCEPT > > Besides those rules, I also allow ping to those interfaces. > > Does anybody host their own DNS, if so, could you share > your rules (without > IP addresses, to protect the identity of the inocent...) ;) > > Beforehand, thank you for your help! > > Best regards, > Erick Sanz > This email message has been scanned for viruses.
