iptables/ipchains syntax?

**andutt** · 07-31-2003

How do i format my ipchains command to accept syslog messages on port 504 but to redirect them to another local port, for example 1002??

is it somethinglike this??

Code:

ipchains -C input -p tcp -y -i eth0 -s 192.168.1.1 504 -d 192.168.1.1 1002

**craig_mcd** · 07-31-2003

iptables -t nat -A PREROUTING -p tcp -s <ip address/range> -d <ip addess> --dport 504 -j REDIRECT --to-port 1002

That will work for iptables, I am not sure if it would be similar for ipchains.

**andutt** · 07-31-2003

Thanks a lot....i will try that.

**andutt** · 07-31-2003

How can i see that this chain is enabled?? With iptables -L -n i only see..

Code:

Chain INPUT &#40;policy ACCEPT&#41;
target     prot opt source               destination         

Chain FORWARD &#40;policy ACCEPT&#41;
target     prot opt source               destination         

Chain OUTPUT &#40;policy ACCEPT&#41;
target     prot opt source               destination

Which is standard right??

**andutt** · 07-31-2003

When i check the module with lsmod it looks like this though..

Code:

ip_tables              15096   5  &#91;ipt_REDIRECT iptable_nat iptable_filter&#93;

**craig_mcd** · 07-31-2003

You need to specify the table.

iptables -L -t nat

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