[LARTC] Allocating 64 kbits/s out of 256 kbits/s for one LAN behing firewall

["Indunil Jayasooriya" <indunil75@gmail.com>]

Hi,

We have a 256 kbits/s (kilobits per second) link to the internet. it is a router running Linux that belongs to our ISP.  They have given us 8 internet ips. (i.e- subnet is 
255.255.255.248
). one has been given to this router. I have given another internet ip to the firewall running CentOS 4.5. iptables is running on it. And also, I have installed iproute2 pkg as well. 

pls see below for installed pkgs. 
[root@firebox ~]# rpm -qa |grep iptables
iptables-1.2.11-3.1.RHEL4
[root@firebox ~]# rpm -qa |grep iproute
iproute-2.6.9-3.EL4.3.centos4


This firewall has 3 ethernet cards at the moment. one is connected to router. one is connected to our DMZ zone. one is connected to LAN1. 

These are ips of the firewall. 

eth0 (internet) - 

1.2.3.4/255.255.255.248 (pls assume it. For security reason, I will not give you the actual ip)
eth1 (DMZ Zone) - 
192.168.100.254/255.255.255.0
eth2 (LAN1) - 
192.168.101.254/255.255.255.0

Now, everyone in LAN1 has access to internet. (due to SNAT rule)

Now, I want to install another ethernet card to this firewall. then, it would be eth3. 

eth3 will be as follows.

eth3 (LAN2) - 192.168.102.254/255.255.255.0

Now, I want put about 5 people (5 PCs) behind this LAN2 and give internet access to them. But, I do not want them to use my whole bandwidth (
i.e - 256 kbit/s), But Instead, I want peple behind this LAN2 to allocate  64 kbits/s (kilo bits per second) for their internert access. 

Is it possible to acheive this task on firewall running iptables and iproute2 (CentOS 4.5) ? 

If so, How can I do such thing? 

If I do such thing, what will happen to the people behind LAN1 ? Will they get whole 256 kbits/s as before or will they get 256 kbit/s - 64  kbit/s for their internet access? 


Hope to hear form you. 










-- 
Thank you
Indunil Jayasooriya


-- 
Thank you
Indunil Jayasooriya
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