what process is sending this packet?

[Ian Smith]

In freebsd-questions Digest, Vol 343, Issue 3, Message: 10
On Mon, 27 Dec 2010 06:30:05 -0800 S Mathias <smathias1972 at yahoo.com> wrote:

 > I can see, that theres a program that keeps sending packets on port 25:
 > 
 > Dec 27 14:11:46 a kernel: [ 6336.992320] O_D_LOG: IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=61533 DF PROTO=TCP SPT=37263 DPT=25 WINDOW=32792 RES=0x00 SYN URGP=0 
 > Dec 27 14:12:01 a kernel: [ 6352.635704] O_D_LOG: IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=55853 DF PROTO=TCP SPT=40644 DPT=25 WINDOW=32792 RES=0x00 SYN URGP=0 
 > Dec 27 14:12:04 a kernel: [ 6355.641085] O_D_LOG: IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=55854 DF PROTO=TCP SPT=40644 DPT=25 WINDOW=32792 RES=0x00 SYN URGP=0 
 > Dec 27 14:12:10 a kernel: [ 6361.649059] O_D_LOG: IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=55855 DF PROTO=TCP SPT=40644 DPT=25 WINDOW=32792 RES=0x00 SYN URGP=0 
 > 
 > but where or how could i find out, that what process sends these packets?

I believe you've posted to the wrong list; this looks pretty much like a 
linux box running the ipchains firewall to me .. we have one of those:

root at pigs:~ # uname -a
Linux pigs.wxyz.org 2.4.36 #1 Tue Jul 22 13:13:24 GMT 2008 i686 pentium3 i386 GNU/Linux

>From its /var/log/messages:

Dec 28 14:47:07 pigs kernel: INPUT IN=ppp0 OUT= MAC= SRC=84.100.172.194 DST=w.x.y.z LEN=60 TOS=0x00 PREC=0x00 TTL=53 ID=52491 DF PROTO=TCP SPT=2381 DPT=23 WINDOW=5808 RES=0x00 SYN URGP=0
Dec 28 14:47:15 pigs kernel: INPUT IN=ppp0 OUT= MAC= SRC=84.100.172.194 DST=w.x.y.z LEN=60 TOS=0x00 PREC=0x00 TTL=53 ID=53751 DF PROTO=TCP SPT=2635 DPT=22 WINDOW=5808 RES=0x00 SYN URGP=0

I'm hoping to check out Luigi's linux port of ipfw + dummynet sometime, 
but have yet to hear of ipchains - let alone (ugh!) tc - on FreeBSD :)

cheers, Ian