Problem: Linux iptables can interfere with the routing of packets

Linux iptables can interfere with load balancing of traffic and must be disabled on the Dispatcher machine.

Issue the following command to determine if iptables are loaded:
lsmod | grep ip_tables
The output from the preceding command might be similar to this:
ip_tables         22400   3
iptable_mangle,iptable_nat,iptable_filter
Issue the following command for each iptable listed in the output to display the rules for the tables:
iptables -t <short_name> -L
For example:
iptables -t mangle -L 
iptables -t nat    -L
iptables -t filter -L    
If iptable_nat is loaded, it must be unloaded. Because iptable_nat has a dependency on iptable_conntrack, iptable_conntrack also must be removed. Issue the following command to unload these two iptables:
rmmod iptable_nat iptable_conntrack


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Last updated: January 17, 2013 11:24 AM EST
File name: ttrb_linipt.html