Web server access

Web server access

[Jorge Umaña]

I have a LINUX box with a public ip. I need to use iptables to send all the 
packages that come to the 80 port to my Web server in Windows. I am using 
this chain:
iptables -t nat -A PREROUTING -p tcp -d $ipPUBLIC --dport 80 -j DNAT 
--to-destination $ipWEBSERVER

I tried to access my web page from outside but does not work

I will appreciate your help
Thanks

_________________________________________________________________
Charla con tus amigos en línea mediante MSN Messenger: 
http://messenger.yupimsn.com/

RE: Web server access

[Eugene Joubert]

[-- Attachment #1: Type: text/plain, Size: 878 bytes --]

Is your web server gateway set to your be that of your linux box?

Have you tried using tcpdump to "see" what is happening with those packets
on that specific port?



-----Original Message-----
From: Jorge Umaña [mailto:jorgeaub@hotmail.com] 
Sent: 14/07/2003 05:10 PM
To: netfilter@lists.netfilter.org
Subject: Web server access


I have a LINUX box with a public ip. I need to use iptables to send all the 
packages that come to the 80 port to my Web server in Windows. I am using 
this chain:
iptables -t nat -A PREROUTING -p tcp -d $ipPUBLIC --dport 80 -j DNAT 
--to-destination $ipWEBSERVER

I tried to access my web page from outside but does not work

I will appreciate your help
Thanks

_________________________________________________________________
Charla con tus amigos en línea mediante MSN Messenger: 
http://messenger.yupimsn.com/


[-- Attachment #2: Type: text/html, Size: 1756 bytes --]

Re: Web server access

[Ray Leach]

You also need to forward rules to forward the traffic to and from your
webserver.


On Mon, 2003-07-14 at 17:10, Jorge Umaña wrote:
> I have a LINUX box with a public ip. I need to use iptables to send all the 
> packages that come to the 80 port to my Web server in Windows. I am using 
> this chain:
> iptables -t nat -A PREROUTING -p tcp -d $ipPUBLIC --dport 80 -j DNAT 
> --to-destination $ipWEBSERVER
> 
> I tried to access my web page from outside but does not work
> 
> I will appreciate your help
> Thanks
> 
> _________________________________________________________________
> Charla con tus amigos en línea mediante MSN Messenger: 
> http://messenger.yupimsn.com/
-- 
--
Raymond Leach <raymondl@knowledgefactory.co.za>
Network Support Specialist
http://www.knowledgefactory.co.za
"lynx -source http://www.rchq.co.za/raymondl.asc | gpg --import"
Key fingerprint = 7209 A695 9EE0 E971 A9AD  00EE 8757 EE47 F06F FB28
--

Re: Web server access

[Michael Martinez]

First make sure the windows box port 80 can be accessed from your Linux
box:
1. log on to your linux box
2. telnet windows-box 80

Then, make sure your Linux box port 80 is accessible from the Internet:

3. go to http://centralops.net/co/
4. use the "tcpquery" function to do a http query on your Linux box

Then, configure iptables on your Linux box. Configure to log port 80
rejects and redirects. Use the logging info to make sure the packets are
being redirected.

mike

On Mon, 2003-07-14 at 11:10, Jorge Umaña wrote:
> I have a LINUX box with a public ip. I need to use iptables to send all the 
> packages that come to the 80 port to my Web server in Windows. I am using 
> this chain:
> iptables -t nat -A PREROUTING -p tcp -d $ipPUBLIC --dport 80 -j DNAT 
> --to-destination $ipWEBSERVER
> 
> I tried to access my web page from outside but does not work
> 
> I will appreciate your help
> Thanks
> 
> _________________________________________________________________
> Charla con tus amigos en línea mediante MSN Messenger: 
> http://messenger.yupimsn.com/
> 
> 
-- 
Michael Martinez
Linux System Administrator
ISTM/CSREES/USDA