need iptables rule to accept all incoming traffic

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http://stackoverflow.com – For my test environment i want to accept all incoming traffic, can someone please give me the iptable rule to be added. My current iptables -L -n output looks like this Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- state RELATED,ESTABLISHED ACCEPT icmp -- ACCEPT all -- ACCEPT tcp -- state NEW tcp dpt:22 REJECT all -- reject-with icmp-host-prohibited ACCEPT tcp (HowTos)