iptables SNAT & DNAT won't accept name

I would like to use ***NAME*** instead of IP address
in the "--to NAMEort" part of iptable command, but
it fails, example :-

iptables -t nat -A PREROUTING ..... -j SNAT NAMEort

does not work. However,

iptables -t nat -A PREROUTING ..... -j SNAT IPort

works. So now, is it expected behaviour and how do I work
around it ?






Ming-Ching Tiew

> I would like to use ***NAME*** instead of IP address
> in the "--to NAMEort" part of iptable command, but
> it fails, example :-
>
> iptables -t nat -A PREROUTING ..... -j SNAT NAMEort
>
> does not work. However,
>
> iptables -t nat -A PREROUTING ..... -j SNAT IPort
>
> works. So now, is it expected behaviour and how do I work
> around it ?

check DNS¡£

"lfree" <(E-Mail Removed)> wrote in message news:ck5dif$som$(E-Mail Removed)...
> > I would like to use ***NAME*** instead of IP address
> > in the "--to NAMEort" part of iptable command, but
> > it fails, example :-
> >
> > iptables -t nat -A PREROUTING ..... -j SNAT NAMEort
> >
> > does not work. However,
> >
> > iptables -t nat -A PREROUTING ..... -j SNAT IPort
> >
> > works. So now, is it expected behaviour and how do I work
> > around it ?
>
> check DNS¡£

I won't post here if it is due to DNS.

You got to try it yourself,

iptables -t nat -A PREROUTING ... -j SNAT --to NAMEort

is wrong syntax,

iptables -t nat -A PREROUTING ... -j SNAT --to IPort

is correct syntax,

iptables -t nat -A PREROUTING -s NAME1 -d NAME2 ....

is also correct syntax.