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simple routing question

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simple routing question Linux Help forum discussing topics including usage, troubleshooting, modules, and distributions. Linux is an open source OS, based on UNIX.

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  #1  
Old January 17th, 2002, 12:42 PM
Nazca Nazca is offline
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Question simple routing question
Ok i currently have the following setup

Code:

[Internet]
     |
     |
 [Linux]
     |
[4 port Hub]
  |  |  |   
  |  |  |
  |  |  |
  |  |  \_________ [Desk 2, Win98]
  |  \_________[Laptop, Win 98]
  \________[Desktop 1, Win 98]


The the Linux has eth0 running to the outside world on DHCP, though the ip is pretty constant and only changes if the box is down for 3+ days. The hub is on eth1 with a fixed address of 192.168.0.1.
The other three machines are .2 (desk 1) .3 (desk 2) .4 (laptop) in the 192.168.0.X range.

What i need is some simple routing rules that will allow my linux box to contine to be a functional server, while allowing the 3 machines inside the localnet to access the web, irc, ftp ect.

I understand the basics of the rules, but i'm short on time at this sec so i'm not able to write my own from scratch. If u can give me some help i'd apreciate it.

Nazca
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  #2  
Old January 17th, 2002, 12:44 PM
realnowhereman realnowhereman is offline
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What do you use? ipchains or iptables?
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Old January 17th, 2002, 12:46 PM
Nazca Nazca is offline
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i'm on a 2.5.X kernal so iptables would be nice
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Old January 17th, 2002, 12:49 PM
Nazca Nazca is offline
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oops, that should be 2.4.X
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Old January 17th, 2002, 12:56 PM
realnowhereman realnowhereman is offline
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I'm not sure (never used iptables), but I think this is what you're looking for.
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Old January 17th, 2002, 01:15 PM
Nazca Nazca is offline
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hmmm, how does this sound:

i turn ip_forward on, set the FORWARD chains policy to deny and then make a rule that accepts everything from eth1 (localnet)
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Old January 17th, 2002, 03:17 PM
realnowhereman realnowhereman is offline
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Yup.* So*you've*got*time*after*all*
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Old January 17th, 2002, 05:27 PM
Nazca Nazca is offline
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i don't have time, i have only just got back to setting this up, had to do other things
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