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From: Andy Furniss <andy.furniss@dsl.pipex.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Shaping and forward
Date: Tue, 08 Feb 2005 12:15:59 +0000	[thread overview]
Message-ID: <4208AD7F.5090605@dsl.pipex.com> (raw)
In-Reply-To: <fad9d48405020801133fd96d34@mail.gmail.com>

Kenneth Kalmer wrote:
> Lartc readers
> 
> I have a peculiar problem with shaping and firewalling.
> 
> My tc rules work great, below is a smaller version:
> 
> #Root
> tc qdisc del dev eth0 root
> tc qdisc add dev eth0 root handle 1: htb default 100
> 
> #Root Class
> tc class add dev eth0 parent 1: classid 1:1 htb rate 1024kbit quantum
> 20000 burst 15k
> 
> #Class for each user
> tc class add dev eth0 parent 1:1 classid 1:2 htb rate 32kbit ceil
> 128kbit prio 0 quantum 20000 burst 15k
> tc class add dev eth0 parent 1:1 classid 1:3 htb rate 32kbit ceil
> 128kbit prio 0 quantum 20000 burst 15k
> ...
> 
> # SFQ qdisc for each user class
> tc qdisc add dev eth0 parent 1:2 handle 12: sfq perturb 10
> tc qdisc add dev eth0 parent 1:3 handle 13: sfq perturb 10
> ...
> 
> #Filters
> tc filter add dev eth0 protocol ip parent 1: prio 0 handle 2 fw classid 1:2
> tc filter add dev eth0 protocol ip parent 1: prio 0 handle 3 fw classid 1:3
> ...
> 
> #iptables mangle rules
> iptables -t mangle -A POSTROUTING -o eth1 -d 192.168.0.1 -j MARK --set-mark 2
> iptables -t mangle -A POSTROUTING -o eth1 -d 192.168.0.2 -j MARK --set-mark 2

You are shaping on eth0 but marking -o eth1

> ...
> 
> #iptables allow forwarding on MAC address
> iptables -A FORWARD -o ppp0 -m mac --mac-source 00:0D:61:30:10:75 -j ACCEPT
> iptables -A FORWARD -o eth1 -m mac --mac-source 00:10:B5:01:AA:D0 -j ACCEPT
> ...

You need a rule to accept -i ppp0.

Andy.

> 
> Should note that the default policy of filter->forward is DROP. All
> other chains are defaulting on ACCEPT
> 
> Now, no users can connect through the gateway. Our test traffic for
> the shapping works perfectly, but no internet traffic works. iptables
> -nvL output shows that the packets move through the forward chain in
> filter, but it doesn't reach the mangle table for marking the packets.
> It's as if the packets disappear...
> 
> Anybody got some ideas? I still have to test the shaping using u32
> matching, using iptables to do forwarding.
> 
> Thanks in advance
> 


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      reply	other threads:[~2005-02-08 12:15 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-02-08  9:13 [LARTC] Shaping and forward Kenneth Kalmer
2005-02-08 12:15 ` Andy Furniss [this message]

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