Re: w/s on same LAN can't access DNAT'ed w/s

Re: w/s on same LAN can't access DNAT'ed w/s

[Antony Stone]

On Monday 24 June 2002 3:27 pm, Nicholas N.E wrote:

> to be short :
>
> But workstations ( on the same LAN ) can not access 10.0.3.8 using the
> Gateway's Public IP

http://www.netfilter.org/documentation/HOWTO/NAT-HOWTO-10.html

 

Antony.

Re: w/s on same LAN can't access DNAT'ed w/s

[Ramin Alidousti]

On Mon, Jun 24, 2002 at 09:27:34PM +0700, Nicholas N.E wrote:

> to be short :
> 
> 10.0.3.0/24 ---> Gatewaty --> Internet
>                               w.x.y.z
> 
> 10.0.3.8 is DNAT'ed to accept http request and some UDP ports 
> To the gateway w/ public IP
> 
> Internet ---> Gateway:80 -- DNAT--> 10.0.3.8:80
> 
> 
> But workstations ( on the same LAN ) can not access 10.0.3.8 using the 
> Gateway's Public IP
> THey can only connect by typing 10.0.3.8 ( or hostname only ) in the 
> browser's URL box
> 
> So far, I only use these on the nat tables :
> 
> iptables -t nat -A PREROUTING -p tcp -s 0/0 -d $Gateway_Ext_IP --dport 80 
> -j DNAT --to 10.0.3.8:80
> 
> AND 
> 
> iptables -t nat -A POSTROUTING -s 0/0 -d 0/0 -o $ ext_iface -j SNAT --to 
> $Gateway_ext_IP
> 
> Should I add something more so other workstations on the same LAN as 10.0.3.8
> can access it by using their gateway's Public IP ?

iptables -t nat -A POSTROUTING -p tcp -s 10.0.3.0/24 -d 10.0.3.8 --dport 80 -j SNAT --to $Gateway_ext_IP

Ramin

> 
> I do not know what this is called tho'
> 
> 
> Thank you for reading.
> 
> 
> 
> Nicholas.

w/s on same LAN can't access DNAT'ed w/s

[Nicholas N.E]

to be short :

10.0.3.0/24 ---> Gatewaty --> Internet
                              w.x.y.z

10.0.3.8 is DNAT'ed to accept http request and some UDP ports 
To the gateway w/ public IP

Internet ---> Gateway:80 -- DNAT--> 10.0.3.8:80


But workstations ( on the same LAN ) can not access 10.0.3.8 using the 
Gateway's Public IP
THey can only connect by typing 10.0.3.8 ( or hostname only ) in the 
browser's URL box

So far, I only use these on the nat tables :

iptables -t nat -A PREROUTING -p tcp -s 0/0 -d $Gateway_Ext_IP --dport 80 
-j DNAT --to 10.0.3.8:80

AND 

iptables -t nat -A POSTROUTING -s 0/0 -d 0/0 -o $ ext_iface -j SNAT --to 
$Gateway_ext_IP

Should I add something more so other workstations on the same LAN as 10.0.3.8
can access it by using their gateway's Public IP ?

I do not know what this is called tho'


Thank you for reading.



Nicholas.

Re: w/s on same LAN can't access DNAT'ed w/s

[Nicholas]

Thank You Mr. Alidousti and Mr. Stone....


On Monday 24 June 2002 09:17 pm, Ramin Alidousti wrote:
> On Mon, Jun 24, 2002 at 09:27:34PM +0700, Nicholas N.E wrote:
> > to be short :
> >
> > 10.0.3.0/24 ---> Gatewaty --> Internet
> >                               w.x.y.z
> >
> > 10.0.3.8 is DNAT'ed to accept http request and some UDP ports
> > To the gateway w/ public IP
> >
> > Internet ---> Gateway:80 -- DNAT--> 10.0.3.8:80
> >
> >
> > But workstations ( on the same LAN ) can not access 10.0.3.8 using the
> > Gateway's Public IP
> > THey can only connect by typing 10.0.3.8 ( or hostname only ) in the
> > browser's URL box
> >
> > So far, I only use these on the nat tables :
> >
> > iptables -t nat -A PREROUTING -p tcp -s 0/0 -d $Gateway_Ext_IP --dport 80
> > -j DNAT --to 10.0.3.8:80
> >
> > AND
> >
> > iptables -t nat -A POSTROUTING -s 0/0 -d 0/0 -o $ ext_iface -j SNAT --to
> > $Gateway_ext_IP
> >
> > Should I add something more so other workstations on the same LAN as
> > 10.0.3.8 can access it by using their gateway's Public IP ?
>
> iptables -t nat -A POSTROUTING -p tcp -s 10.0.3.0/24 -d 10.0.3.8 --dport 80
> -j SNAT --to $Gateway_ext_IP
>
> Ramin
>
> > I do not know what this is called tho'
> >
> >
> > Thank you for reading.
> >
> >
> >
> > Nicholas.