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Old 06-22-2005, 01:03 PM   #1
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Question How limit bandwidth

Please, how limit inblound bandwidth in fedora core 2, i use cbq but donīt work in inbound traffic.
Old 06-22-2005, 01:32 PM   #2
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hmmm _why_ do you want to limit inbound bandwidth?
If you think it will prevent you from flooding, please note it is useless

I dont know if it could do the job for you, but I like to use iptables to limit inbound connections (like how many "connections" I accept on a service for a given time) but if you really need bandwidth, it won't do the job.
Old 06-22-2005, 01:45 PM   #3
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i need in cyber becouse the navigate eat all bandwidth and the telephony don't work then i need limit the inbound bandwidth for navigation.

Old 06-22-2005, 05:55 PM   #4
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there is also a iptables byte limit patch.
you can limit bandwidth easily with this.
Old 06-23-2005, 12:21 PM   #5
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thanks, but i know about byte limit patch can you give me a tip please?
Old 06-24-2005, 03:43 AM   #6
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Last edited by born4linux; 06-24-2005 at 03:47 AM.
Old 06-24-2005, 10:17 AM   #7
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Thanks but i check and not limit the inbound traffic, please help me is urgent.

Old 06-24-2005, 02:56 PM   #8
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CBQ would work for your application, but is is not efficient because CBQ is used to shape traffic. You need to do ingress traffic policing.

Here is an example:

Assume that my WAN interface is eth1 and I am limiting inbound traffic from ip address:

tc qdisc del dev eth1 ingress
tc qdisc add dev eth1 handle ffff: ingress
tc filter add dev eth1 parent ffff: protocol ip prio 50 u32 match ip src police rate 128kbit burst 15k drop flowid :1
The first line clears any existing ingress qdisc on eth1, if it gives you weird output that is fine.
The second line creates an ingress qdisc on eth1.
The third line creates a 128 Kbps bandwidth cap on all traffic coming from IP address: If this traffic comes in at a rate of higher than 128 Kbps the action will be to drop excess packets.

NOTE: This will work if you are using a service that uses the TCP protocol because TCP will adjust its speed when it starts losing packets. If the connection is saturated with UDP traffic then this will not help you. This is not meant to prevent or mitigate attacks.

Good Luck!
Old 06-30-2005, 01:49 AM   #9
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Try CBQ. its best for bandwidth limiting. just use a simple script file and simple configuration.

1. Download CBQ script from .
2. Rename cbq.init-v0.7.3 to cbq.init and cbq.init to /etc/rc.d/
3. now make a file "cbq.999-network" into /etc/sysconfig/cbq/
4. type flowing lines


5. now run CBQ script -> /etc/rc.d/cbq.init

AND magic of this one file simple script.

for more information see
Old 06-30-2005, 05:04 AM   #10
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in the RULE u can specify ports, so cbq.init will work fine for u
Old 07-18-2005, 05:57 AM   #11
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I have installed cbq to throttle bandwidth . I didnt know how to gauze the bandwidth connecting to my computer .
I could not trace the log of cbq and at the same time no idea how to account bandwidth for different ip ( different ruleset )

Any help in this regard will be appreciated,



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