Re: [LARTC] iptables mark & iproute]

[Arindam <ahiam@yahoo.com>]

hi all
At last i got sucess !.. but am confused y it didnt work earlier..the 
difference today was that i reinstalled RH7.2 & complied kernel 
2.4.16(not 17).. rest was same..... & the bandwidth too is under control!..
is it normal for to get more than said bandwidth--i mean i restricted a 
network with 8Kbit(with same script as below) but still was able to get 
a download(ftp) of 17Kbit(as shown in iptraf)
a very spl. thanx 2 Stef and 2 all of u for ur time with my problem
arindam haldar

-------- Original Message --------
Subject: Re: [LARTC] iptables mark & iproute
Date: Mon, 07 Jan 2002 14:13:09 +0530
From: Arindam <ahiam@yahoo.com>
To: lartc@mailman.ds9a.nl
CC: Stef Coene <stef.coene@docum.org>

hi..i posted this message sometime back.. can pls someone help me with it..
i basically want traffic to be restricted for all server outside my
network ie. 4e.g 64kbps for internet but 512kbps for my lan
servers(web/smtp)..
i though of doing this(as the script will tell u)--mark packets with
iproute & restrict the traffic with iprote2(lan-web or smtp)..if no mark
then pass thru the default bandwidth for the ip group !!
the linux box is always handling 1Mb+ traffic from eth0(net interface)..

awaiting some guidance for u Gurus there...
arindam haldar


Message: 6 Date: Fri, 04 Jan 2002 11:24:30 +0530 From: Arindam Haldar
<ahiam@yahoo.com> To: Stef Coene <stef.coene@docum.org> Cc:
lartc@mailman.ds9a.nl Subject: Re: [LARTC] iptables mark & iproute
related ! hi, Stef Coene wrote:

  > On Thursday 03 January 2002 15:17, Arindam Haldar wrote:

  >>hi
  >>i did those test & as i said in my last mail there is trafic passing 
thru
  >>ir bytes counter r increasing but the tc command doesnt show any
  >>restircition. seem like marked pkts r not going thru the iproute
  >>

  > Sorry, you wrote to encrypted for me to understand everything  [;-)]
  > If I understand correctly, everything works if you use CBQ & SFQ, but
the fw
  > filter is not working like it should be ?


YES !!! .. UR ABSOLUTELY RIGHT !!!!  [:-)]

  >

  >>any suggestions ??
  >>

  > Can you post the scripts you are using so I can try them myself ?
  >
  > Stef
  >

THIS IS MY TRUNCATED SCRIPT(MARK RELATED) !


iptables -A INPUT -i eth4 -s 192.168.1.1 -j ACCEPT

iptables -A FORWARD -o eth0 -s 192.168.1.1 -j ACCEPT
iptables -A PREROUTING -t nat -i eth4 -p 6 --dport 80 -j REDIRECT
--to-port 3128
iptables -A PREROUTING -t mangle -i eth4 -s 192.168.1.1 -d a.b.c.d -j
MARK --set-mark 55
iptables -A PREROUTING -t mangle -i eth4 -s 192.168.1.1 -d ! a.b.c.d -j
MARK --set-mark  51
iptables -A POSTROUTING -t mangle -o eth0 -s 192.168.1.1 -j MASQUERADE


iptables -A PREROUTING -t nat -i eth0 -d 192.168.1.1 -s a.b.c.d -j MARK
--set-mark 56
iptables -A PREROUTING -t mangle -i eth0 -d 192.168.1.1 -s ! a.b.c.d -j
MARK --set-mark 52

###--32kbps for x-LAN
tc class add dev eth4  parent 5:1 classid 5:191 est 2sec 10sec cbq
bandwidth 512Kbit rate 32Kbit allot 5\1514 weight 3.2Kbit prio 2
maxbrust 5 avpkt 1500 bounded
tc qdisc add dev eth4 parent 5:191 sfq perturb 10
tc filter add dev eth4 parent 5:0 protocol ip prio 10 handle 51 fw
flowid 5:191
tc filter add dev eth4 parent 5:0 protocol ip prio 10 handle 52 fw
flowid 5:191
###--128 for LAN
tc class add dev eth4  parent 5:1 classid 5:192 est 2sec 10sec cbq
bandwidth 512Kbit rate 128Kbit allot 5\1514 weight 3.2Kbit prio 2
maxbrust 5 avpkt 1500 bounded
tc qdisc add dev eth4 parent 5:192 sfq perturb 10
tc filter add dev eth4 parent 5:0 protocol ip prio 10 handle 55 fw
flowid 5:192
tc filter add dev eth4 parent 5:0 protocol ip prio 10 handle 56 fw
flowid 5:192

similar for eth0 too !!
thanx in anticipation

arindam haldar




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