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Need
help.
Im trying to forward all traffic to a public server(A) to another public server(B) except traffic to port 22. Found this on google but cant get it to work. Could someone help me please. Server A has one NIC server B has one NIC. Do i need 2 NICS in server A. #!/bin/sh iptables -F iptables -F INPUT iptables -F OUTPUT iptables -F FORWARD iptables -X iptables -F -t nat iptables -P INPUT ACCEPT iptables -P OUTPUT ACCEPT iptables -P FORWARD ACCEPT echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -A PREROUTING -i eth0 --protocol tcp --destination-port ! 22 -j DNAT --to-destination "IP B" iptables -t nat -A PREROUTING -i eth0 --protocol udp -j DNAT --to-destination "IP B" # END /etc/rc.d/init.d/iptables status Table: filter Chain INPUT (policy ACCEPT) num target prot opt source destination Chain FORWARD (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination Table: mangle Chain PREROUTING (policy ACCEPT) num target prot opt source destination Chain INPUT (policy ACCEPT) num target prot opt source destination Chain FORWARD (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination Chain POSTROUTING (policy ACCEPT) num target prot opt source destination Table: nat Chain PREROUTING (policy ACCEPT) num target prot opt source destination 1 DNAT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:!22 to:"IP B" 2 DNAT udp -- 0.0.0.0/0 0.0.0.0/0 to:"IP B" Chain POSTROUTING (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination /Morten. |
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