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Old 01-28-2005, 09:55 AM   #1
jhar
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Registered: Jan 2005
Location: Philippines
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configuring gateway - help


Hello to all...
Im newbie to configure gateway server, can you help me?

I am installing redhat linux 9 with internet connection. i have a two ethernet card. eth0 - connect to my adsl modem and eth1 to my network hub. eth0 ip configuration was the static IP address give from ISP and also setup a ISP gateway and DNS. while eth1 for my LAN using the IP of 192.168.1.1, when I ping like ping yahoo.com i have a ping reply so meaning i have a connection to the internet. then when I ping to my local network IP address like ping 192.168.1.11 i got also ping reply. My gateway use in client computer now is the IP address assign in eth1 in my linux server. my problem is my LAN computer cannot connect to the internet. I assign my LAN computer to a default gateway to 192.168.1.1 but when I try to connect there is no connection to the Internet. Can you help me to solve my problem? Can you help me to setup my gateway server. I think there is a lacking configuration in my setup.

Please help me... thank you very much...

you can send also your help to my email : reansph@yahoo.com


Thnk you vry much....
 
Old 01-28-2005, 10:13 AM   #2
cadkins
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I'm a little confused. Do you have two computers connected to two different lines in the ADSL? Or is one computer connected to the ADSL and the other is connected to the hub?

If you have one connected to the hub and it can not get onto the internet, you should be able to give the computer a static IP address and everthing via console. I am not sure about RedHat but it should be something like netcfg. This will step you through the process of naming your computer and giving it the IP address and gateway.

You should be able to get the gateway and DNS from the Router. What router are you using?

Inside the router, via a browser, you should be able to give the name of the computer and the IP address. This will keep the IP from being used from anything other than that one computer.

Use a bigger number for the last digit though. Something like 192.168.1.100 or something.

Hope that helps and make sense.
 
Old 01-28-2005, 10:33 AM   #3
jhar
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Location: Philippines
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I have only one adsl connection and I have no router use. I setup a Redhat server for a router/gateway for my LAN connection to Internet.. I have 1 internet connection and have static IP address.. but my LAN cannot connect to the internet.
 
Old 01-28-2005, 12:05 PM   #4
TigerOC
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You need to get ip-masqurade working and then be able to forward the connections to the boxes behind the gateway. Basically you need to the gateway to forward requests back to the originating box which is not happening.
You'll find a detailed guide at;

http://www.tldp.org/HOWTO/IP-Masquerade-HOWTO/

you could also implement MonMotha's script that will provide firewall/routing/forwarding for you;

http://www.linuxorbit.com/modules.ph...icle&artid=529

Hope this helps.
 
Old 01-29-2005, 09:11 AM   #5
jhar
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thnks for the info.. but if i setup IP masq do i need to setup IPTables? can you give me a guide to do the IPTables?

thnks again...
 
Old 01-29-2005, 10:06 AM   #6
win32sux
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Registered: Jul 2003
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Quote:
Originally posted by jhar
if i setup IP masq do i need to setup IPTables?
masquerading is done using iptables... the main masquerading rule in the iptables script usually looks like this:

Code:
iptables -t nat -A POSTROUTING -o $INET_IFACE -j MASQUERADE
where $INET_IFACE is the name of the external interface on the gateway...

Quote:
can you give me a guide to do the IPTables?
a good place to get iptables documentation is this:

http://www.linuxguruz.com/iptables/

just my two cents...


Last edited by win32sux; 01-29-2005 at 10:14 AM.
 
Old 01-30-2005, 09:54 AM   #7
jhar
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Thanks for the give info.. I will try that one..

Infuture problem pls help me again guys...

thnks you..
 
  


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