[squid-users] RE: RE: Tproxy Squid 3.1

Hi,
Im facing a weird problem with tproxy few weeks, the problem is, all
work fine except clients that is behind a tplink router and another
one that i dont remembe, but almost tplink wr541g routers, if i remove
iptables mangle redirect rule, client has traffic, enable not, dont
speak english very well, so i hope someone can understand and help
me.. this is a server with 1000+ clients, and im getting very
frustrated with this problem.

my config:

ip rule add fwmark 1 lookup 100
ip route add local 0.0.0.0/0 dev lo table 100

/sbin/iptables -v -t mangle -N DIVERT
/sbin/iptables -v -t mangle -A DIVERT -j MARK --set-mark 1
/sbin/iptables -v -t mangle -A DIVERT -j ACCEPT
/sbin/iptables -v -t mangle -A PREROUTING -p tcp -m socket -j DIVERT
/sbin/iptables -v -t mangle -D PREROUTING -p tcp --dport 80 \
                  -j TPROXY --tproxy-mark 0x1/0x1 --on-port 5128 2>&1

/usr/local/sbin/ebtables -t broute -A BROUTING -i eth5 -p ipv4
--ip-proto tcp --ip-dport 80 -j redirect --redirect-target DROP
/usr/local/sbin/ebtables -t broute -A BROUTING -i eth3 -p ipv4
--ip-proto tcp --ip-sport 80 -j redirect --redirect-target DROP

cd /proc/sys/net/bridge/
for i in *
do
echo 0 > $i
done
unset i

echo 0 > /proc/sys/net/ipv4/conf/lo/rp_filter
echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
echo 1 > /proc/sys/net/ipv4/ip_forward

i hav 2 interfaces in bridge, as i said.. all working fine.. except
with this tplink routers
also got log in iptable mangle, and then i can see traffic from the
client router, but traffic cant reach squid
, in access.log cant get anything
i use a mikrotik as pppoe-server, my network is:

router <-> squidbox <-> mikrotik <-> clients

With Squid inline on a bridge like this there should be *no* squid
related configuration outside the Squid box.

Is the tplink being used as "router" or "squidbox" in that diagram?

What kernel and iptables version is the squidbox? some of the older
2.6.3x kernels have bridge+tproxy problems.

Amos

Thanks for the reply!
sorry about lack of info..
ok.. my diagram is exactly like that:

Internet <-> SquidBox (v 3.1) <-> Mikrotik <-> Client--tplink_router

the tplink is used in the client to dial pppoe and share connection
inside the client's house
my kernel version is 2.6.31-14 ..maybe something related with my
kernel? can you recomend me a version with tproxy support?
iptables is 1.4.3
ebtables 2.0.10-4

i'll try another kernel version.. thanks for the reply and hope for more help!
Received on Wed May 02 2012 - 01:11:19 MDT