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Linux - Networking This forum is for any issue related to networks or networking.
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Old 01-31-2002, 05:38 PM   #1
jimval7
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Registered: Jan 2002
Location: Dallas, TX
Distribution: RedHat 7.0 - Kernel 2.4.17
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Routing


OK, I need help with routing, I have a linux firewall with 2 NICS, one goes out to the internet, and the other goes out to my LAN. I do ipchains, ipmasq, and everything works fine. Here's the deal though. I want to give one of my NICS 2 ip address, I know how to do that, BUT What i need help on is routing, I want to tell my firewall to route all network traffic coming from this outside ip to a certain internal IP, how can i do that?
 
Old 01-31-2002, 10:30 PM   #2
xanthium
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Lightbulb Here is my solution.

Hi ,

iam sorry but i didnt get ur needs. So i assume that u have two NIC's and that one of the NIC's has two IP address binded ( thru ip aliasing ). My answers are based on this assumptions.


1. If u want packets coming in from a external host with ip a.b.c.d to be redirected to another internal LAN ip address ( or ur aliased ip address ) ..... for this u need iproute2 util ..... basically used for bandwidth shapping Quality of Service ( QoS ), CBQ . There are numerous howto's and tutorials for accomplishing this ... search on www.google.com with the keywords "bandwidth shaping", QoS, CBQ, iproute2, etc.

But before rushing in for QoS solution please check out the functionality provided by iptables s/w ...... check out the following links :

http://www.linuxguruz.org/iptables/

check out all the scripts .... specially http://www.linuxguruz.org/iptables/s...rewall_016.txt

since i havent used iptables so i dont know if it will accomplish ur tasks or not hence i gave the solution for CBQ .... but if u have to choose between iptables and iproute2 for simple needs of yours i will definately recommend iptables since its relatively simple to configure.



2. packets coming in from a external host with ip a.b.c.d on port
X to be redirected port Y can be accomplished by ipchains or iptables util.

hope this is what ur looking for. Pls do close this thread if ur task is accomplshed by posting a reply mentioning so.

regards,
xanthium.


Last edited by xanthium; 01-31-2002 at 10:36 PM.
 
Old 02-01-2002, 09:32 AM   #3
jimval7
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This weekend

You provided me with a lot of good information. I will do more research, and I will try it this weekend. I already do IP chains, so I will do either QoS or IP Tables, looks like IPtables will be the easier way, but we will see, thanks. I'll reply to this post and post what I came up with and what worked.
 
Old 02-08-2002, 04:06 PM   #4
jimval7
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Registered: Jan 2002
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Unhappy Kernel upgrade

Ok, after reading and reading I found out what i have to do. Well, i need to
upgrade my kernel. I have red hat 6.2 with kernel 2.2.14, and I need kernel 2.4.xxx.

OK, i have a question, if i upgrade my kernel, will that reset all my current settings?
 
  


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