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Date:      Thu, 13 Feb 2014 15:06:20 -0200
From:      Marcelo Gondim <gondim@bsdinfo.com.br>
To:        freebsd-stable@freebsd.org
Subject:   dummynet problem in FreeBSD 10.0-STABLE
Message-ID:  <52FCFB8C.1030800@bsdinfo.com.br>

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Hi all,

The following rules do not work anymore and block access to outside:

ipfw add pipe 1 ip from 67.xxx.89.78 to any 80 out via xn0
ipfw add pipe 2 ip from any 80 to 67.xxx.89.78 in via xn0
ipfw pipe 1 config bw 1024Kbit/s queue 128 burst 2M
ipfw pipe 2 config bw 1024Kbit/s queue 128 burst 2M

Using these rules on the server, I can not surf the Internet through the 
server. In FreeBSD 9.x these rules worked.
Doing: links http://www.any_website.com not work

My Firewall rules:
# ipfw show

00100 67191 13584242 allow ip from any to any via lo0
00200     0        0 deny ip from 127.0.0.0/8 to any
00300     0        0 deny ip from any to 127.0.0.0/8
00400     0        0 check-state
00500     0        0 deny ip from 192.168.0.0/16 to any in via xn0
00600     0        0 deny ip from 10.0.0.0/8 to any in via xn0
00700     0        0 deny ip from 172.16.0.0/12 to any in via xn0
00800     0        0 deny ip from 224.0.0.0/4 to any in via xn0
00900     0        0 deny ip from 255.255.255.255 to any in via xn0
01000     0        0 deny tcp from any to any in tcpflags fin,psh,urg 
recv xn0
01100     0        0 deny tcp from any to any in tcpflags 
!syn,!fin,!ack,!psh,!rst,!urg recv xn0
01200     0        0 deny tcp from any to any in tcpflags syn,fin recv xn0
01300     0        0 deny tcp from any to any in tcpflags fin,rst recv xn0
01400     0        0 deny ip from any to any in ipoptions 
ssrr,lsrr,rr,ts recv xn0
01500    78     2496 deny ip from table(99) to any in via xn0
01600     0        0 deny ip from table(1) to any

01700   276    16560 pipe 1 ip from 67.xxx.89.78 to any dst-port 80 out 
via xn0
01800     3      144 pipe 2 ip from any 80 to 67.xxx.89.78 in via xn0

01900     4      276 allow icmp from any to any icmptypes 3,11,12
02000     0        0 allow icmp from me to any icmptypes 0,8 keep-state
02100     1       75 deny icmp from any to any
02200  2226   298340 allow tcp from any to me dst-port 4321 in via xn0 
setup keep-state
02300  1997   768000 allow tcp from any to me dst-port 995 in via xn0 
setup keep-state
02400  1363   519377 allow tcp from any to me dst-port 25 in via xn0 
setup keep-state
02500   733   549931 allow tcp from any to me dst-port 587 in via xn0 
setup keep-state
02600  8952  8756999 allow tcp from any to me dst-port 80 in via xn0 
setup keep-state
02700  2748  2125603 allow tcp from any to me dst-port 443 in via xn0 
setup keep-state
02800     0        0 allow tcp from any to me dst-port 143 in via xn0 
setup keep-state
02900     0        0 allow tcp from any to me dst-port 110 in via xn0 
setup keep-state
03000  1094   360419 allow tcp from any to me dst-port 993 in via xn0 
setup keep-state
03100     0        0 allow tcp from any to me dst-port 21 in via xn0 
setup keep-state
03200     0        0 allow tcp from any to me dst-port 30000-50000 in 
via xn0 setup keep-state
03300  3558  1151840 allow tcp from me to any out setup keep-state
03400  6693   880724 allow ip from me to any out keep-state
65534   170    20283 deny log logamount 100 ip from any to any
65535    36     5424 allow ip from any to any

When I remove the upload rule, navigation back to work:

# ipfw delete 1700

links http://www.any_website.com work again.

# uname -a
FreeBSD mail.xxxxx.xxx.xx 10.0-STABLE FreeBSD 10.0-STABLE #2 r261419: 
Thu Feb  6 16:51:10 BRST 2014 
root@mail.xxxxx.xxx.xx:/usr/obj/usr/src/sys/GONDIM  amd64

It seems that something has changed and that stopped the bandwidth control.

[]'s
Gondim



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