To simplify, let's say I got a network with 3 servers (all runnning centos 6.4) in a row:
Internet---FW---LN---PN
FW: firewall
LN: login node
PN: processing node
i can ping from the FW to the world, but not from the LN or the PN.
I have IP FORWARDING enabled AND IPTABLES disabled in the LN:
[root@meta ~]# !1005
cat /proc/sys/net/ipv4/ip_forward
1
[root@meta ~]# !1014
iptables --list
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
So my questions is: if i have iptables disabled, does the IP forwarding works? or do i need to raise the IPTABLES and write a forward rule?
Thanks -Ricardo
ip route show