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Re: Help! one more time on on Squid3.HEAD(20110307), TPROXY4 and Iptables 1.4.9 + ebtables

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Amos, 

Back at it again tonight -- So, when you did this (and I'm assuming you have -- maybe incorrectly ); ) how many nics did you have enabled. 

Also, for grins, I just to ubuntu 11.04 with same config and tested with both 2.7Stable9 and 3.HEAD and still get it to work. 


it's running on 

Linux ubuntu 2.6.38-5-generic #32-Ubuntu SMP Tue Feb 22 16:09:46 UTC 2011 i686 i686 i386 GNU/Linux
2011/03/16 00:45:57.905 kid1| Accepting spoofingHTTP Socket connections at  FD 17 on [::]:3129
2011/03/16 01:48:41.219 kid1| The AsyncCall httpAccept constructed, this=0x89a5b58 [call7]
2011/03/16 01:48:41.220 kid1| The AsyncCall httpAccept constructed, this=0x89a6cc8 [call9]
2011/03/16 01:48:41.222 kid1| AcceptLimiter.cc(40) kick:  size=0
2011/03/16 01:48:41.222 kid1| AcceptLimiter.cc(40) kick:  size=0
2011/03/16 01:48:41.223 kid1| AcceptLimiter.cc(40) kick:  size=0
2011/03/16 01:48:41.223 kid1| AsyncJob constructed, this=0x89a7538 type=Comm::TcpAcceptor [job1]
2011/03/16 01:48:41.223 kid1| AcceptingHTTP Socket connections at  FD 15 on [::]:3128
2011/03/16 01:48:41.223 kid1| AsyncJob constructed, this=0x876e4b0 type=Comm::TcpAcceptor [job2]
2011/03/16 01:48:41.223 kid1| Accepting spoofingHTTP Socket connections at  FD 16 on [::]:3129
2011/03/16 01:48:41.223 kid1| Comm::TcpAcceptor status in: FD 15, [::] [ job1]
2011/03/16 01:48:41.224 kid1| TcpAcceptor.cc(80) start:  FD 15, [::] [ job1] AsyncCall Subscription: 0x89a5bd8*1
2011/03/16 01:48:41.224 kid1| Comm::TcpAcceptor status out: FD 15, [::] [ job1]
2011/03/16 01:48:41.224 kid1| Comm::TcpAcceptor status in: FD 16, [::] [ job2]
2011/03/16 01:48:41.224 kid1| TcpAcceptor.cc(80) start:  FD 16, [::] [ job2] AsyncCall Subscription: 0x89a5c40*1
2011/03/16 01:48:41.224 kid1| Comm::TcpAcceptor status out: FD 16, [::] [ job2]
root@ubuntu:/usr/local/squid/var/logs# tail -f cache.log | grep -i accept


and the stats seem to indicate the same thing. 

root@ubuntu:/usr/local/squid/var/logs# iptables -t raw -nvL ; iptables -t mangle -nvL
Chain PREROUTING (policy ACCEPT 822K packets, 1112M bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 81 packets, 22834 bytes)
 pkts bytes target     prot opt in     out     source               destination         
Chain PREROUTING (policy ACCEPT 822K packets, 1112M bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DIVERT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0           socket 
   19  1140 TPROXY     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0           tcp dpt:80 TPROXY redirect 0.0.0.0:3129 mark 0x1/0xffffffff

Chain INPUT (policy ACCEPT 1261 packets, 167K bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain FORWARD (policy ACCEPT 1 packets, 328 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 81 packets, 22834 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain POSTROUTING (policy ACCEPT 83 packets, 23194 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain DIVERT (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 MARK       all  --  *      *       0.0.0.0/0            0.0.0.0/0           MARK set 0x1 
    0     0 ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0    


It has to be a routing issue but I'm just not seeing the socket pop for any kind of read (and nothing is showing up on lo via tcp dump). 

0:	from all lookup local 
32765:	from all fwmark 0x1 lookup 100 
32766:	from all lookup main 
32767:	from all lookup default 

root@ubuntu:/usr/local/squid/var/logs# ip ro li t all
local default dev lo  table 100  scope host 
192.168.1.0/24 dev br0  proto kernel  scope link  src 192.168.1.66 
172.16.1.0/24 dev eth0  proto kernel  scope link  src 172.16.1.137  metric 1 
169.254.0.0/16 dev eth0  scope link  metric 1000 
default via 192.168.1.254 dev br0 
default via 172.16.1.2 dev eth0  proto static 
local 172.16.1.137 dev eth0  table local  proto kernel  scope host  src 172.16.1.137 
broadcast 192.168.1.0 dev br0  table local  proto kernel  scope link  src 192.168.1.66 
local 192.168.1.66 dev br0  table local  proto kernel  scope host  src 192.168.1.66 
broadcast 127.255.255.255 dev lo  table local  proto kernel  scope link  src 127.0.0.1 
broadcast 172.16.1.255 dev eth0  table local  proto kernel  scope link  src 172.16.1.137 
broadcast 192.168.1.255 dev br0  table local  proto kernel  scope link  src 192.168.1.66 
broadcast 172.16.1.0 dev eth0  table local  proto kernel  scope link  src 172.16.1.137 
broadcast 127.0.0.0 dev lo  table local  proto kernel  scope link  src 127.0.0.1 
local 127.0.0.1 dev lo  table local  proto kernel  scope host  src 127.0.0.1 
local 127.0.0.0/8 dev lo  table local  proto kernel  scope host  src 127.0.0.1 
fe80::/64 dev eth0  proto kernel  metric 256 
fe80::/64 dev eth2  proto kernel  metric 256 
fe80::/64 dev eth1  proto kernel  metric 256 
fe80::/64 dev br0  proto kernel  metric 256 
unreachable default dev lo  table unspec  proto kernel  metric -1  error -101 hoplimit 255
local ::1 via :: dev lo  table local  proto none  metric 0  hoplimit 0
local fe80::20c:29ff:fee1:1307 via :: dev lo  table local  proto none  metric 0  hoplimit 0
local fe80::20c:29ff:fee1:1307 via :: dev lo  table local  proto none  metric 0  hoplimit 0
local fe80::20c:29ff:fee1:1311 via :: dev lo  table local  proto none  metric 0  hoplimit 0
local fe80::20c:29ff:fee1:13fd via :: dev lo  table local  proto none  metric 0  hoplimit 0
ff00::/8 dev eth0  table local  metric 256 
ff00::/8 dev eth2  table local  metric 256 
ff00::/8 dev eth1  table local  metric 256 
ff00::/8 dev br0  table local  metric 256 
unreachable default dev lo  table unspec  proto kernel  metric -1  error -101 hoplimit 255



James S. Binder
Vice President, Engineering
Cyphort Inc.,

jbinder@xxxxxxxxxxx
408.761.1403 (cell)


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On Mar 15, 2011, at 3:02 AM, Amos Jeffries wrote:

> On 15/03/11 20:22, Jim Binder wrote:
>> Trying this one more time to see if anyone might know what's wrong in getting my transparent bridging with squid to work.
>> Config...  pings work thought the box (the bridge is working however; the 3129 socket never pops with an HTTP request)
>> 
>> Admin on Eth1, Internet on eth0 and Inside (client) interface on eth2. Br0 used as the bridge.
>> 
>> Running Fedora core 14 (but went back as fare as 12 and couldn't get it to work)
>> 
>> Squid Cache: Version 3.HEAD-20110307
>> configure options:  '--enable-ecap' '--enable-icap-client' '--enable-linux-netfilter' --enable-ltdl-convenience
>> 
>> iptables-1.4.9-1.fc14.i686
>> kernel-2.6.35.11-83.fc14.i686
>> ebtables-2.0.9-5.fc13.i686
>> 
>> Went as far to turn on dynamic debug logging and I don't see what's wrong but the connect never seems to get made to the 3129 socket.
>> 
>> [  214.914113] TRACE: mangle:PREROUTING:rule:2 IN=eth2 OUT= MAC=00:40:f4:cd:01:70:00:50:56:36:df:78:08:00 SRC=192.168.1.91 DST=192.168.1.88 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=3380 DF PROTO=TCP SPT=48255 DPT=80 SEQ=1363486620 ACK=0 WINDOW=5840 RES=0x00 SYN URGP=0 OPT (020405B40402080A02522AA80000000001030306)
>> [  214.914155] xt_TPROXY: redirecting: proto 6 c0a80158:80 ->  00000000:3129, mark: 1
>> [  217.920783] TRACE: raw:PREROUTING:policy:3 IN=eth2 OUT= MAC=00:40:f4:cd:01:70:00:50:56:36:df:78:08:00 SRC=192.168.1.91 DST=192.168.1.88 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=3381 DF PROTO=TCP SPT=48255 DPT=80 SEQ=1363486620 ACK=0 WINDOW=5840 RES=0x00 SYN URGP=0 OPT (020405B40402080A025236680000000001030306)
>> [  217.920846] TRACE: mangle:PREROUTING:rule:2 IN=eth2 OUT= MAC=00:40:f4:cd:01:70:00:50:56:36:df:78:08:00 SRC=192.168.1.91 DST=192.168.1.88 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=3381 DF PROTO=TCP SPT=48255 DPT=80 SEQ=1363486620 ACK=0 WINDOW=5840 RES=0x00 SYN URGP=0 OPT (020405B40402080A025236680000000001030306)
>> [  217.920891] xt_TPROXY: redirecting: proto 6 c0a80158:80 ->  00000000:3129, mark: 1
> <snip>
>> [root@fw01 ~]#
>> [root@fw01 ~]# ip route list table all
>> local default dev lo  table 100  scope host
> 
> Tried with "table 100" created on eth0 and eth2 ?
> 
> That seems to be needed recently.
> 
> Everything else looks okay to me. Down to the packets hitting the TPROXY and DIVERT rules.
> 
> Amos
> -- 
> Please be using
>  Current Stable Squid 2.7.STABLE9 or 3.1.11
>  Beta testers wanted for 3.2.0.5




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