RE: iptables and samba

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You are not getting any response since this has nothing to do with
routing/firewalling it has to do with samba and how samba works.  Since you
do not have a domain samba works very peculiar - like it will broadcast and
then wait to send out directed datagrams.  

Again read up on samba - what my opinion is is that the client is beginning
with a broadcast which doesn't get forwarded; the client then waits for a
timeout and finally directs a datagram to the samba server directly which
then does make it through the router.

-----Original Message-----
From: azeem ahmad [mailto:azeem484@xxxxxxxxxxx]
Sent: Friday, May 28, 2004 3:33 PM
To: netfilter@xxxxxxxxxxxxxxxxxxx
Subject: RE: iptables and samba


the output of tcpdump that i have posted i last message is the output of the

command
#tcpdump -i eth0 host 192.168.0.2

and i only have one internal interface eth0 and one extrnal interface ppp0

Regards
Azeem


>From: Aldo Lagana <ALagana@xxxxxxx>
>To: 'azeem ahmad' <azeem484@xxxxxxxxxxx>, netfilter@xxxxxxxxxxxxxxxxxxx
>Subject: RE: iptables and samba
>Date: Thu, 27 May 2004 17:07:19 -0400
>
>tcpdump individually on the interfaces that the routing is going through
>while you attempt to 'browse' or whatever.
>You should see packets coming into your input interface but maybe NOT going
>out the output interface?!?
>
># tcpdump -i eth0 > /home/eth0.log &
># tcpdump -i eth1 > /home/eth1.log &
>
>(dont forget to kill both processes when done!)
>
>-----Original Message-----
>From: azeem ahmad [mailto:azeem484@xxxxxxxxxxx]
>Sent: Thursday, May 27, 2004 4:57 PM
>To: netfilter@xxxxxxxxxxxxxxxxxxx
>Subject: RE: iptables and samba
>
>
>
>
>neither WINS nor DNS is on my network. only a caching only name server i m
>running. and i captured the output of /var/log/messages and that is as 
>below
>and i added rules for port udp 137,139,139 and tcp 137,138,139 mean all
>three ports of both protocols but it doesnt seem to work
>
>---------------------------------------------------------------------------
-
>--------------------------------------------------
>May 28 01:36:27 subzero kernel: IN=eth0 OUT=
>MAC=00:b0:d0:3d:84:1f:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=192.168.0.100 LEN=60 TOS=0x00 PREC=0x00 TTL=128 ID=51870 PROTO=ICMP
>TYPE=8 CODE=0 ID=512 SEQ=1024
>May 28 01:36:32 subzero kernel: IN=eth0 OUT=
>MAC=00:b0:d0:3d:84:1f:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=192.168.0.100 LEN=60 TOS=0x00 PREC=0x00 TTL=128 ID=51873 PROTO=ICMP
>TYPE=8 CODE=0 ID=512 SEQ=1280
>May 28 01:36:38 subzero kernel: IN=eth0 OUT=
>MAC=00:b0:d0:3d:84:1f:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=192.168.0.100 LEN=60 TOS=0x00 PREC=0x00 TTL=128 ID=51878 PROTO=ICMP
>TYPE=8 CODE=0 ID=512 SEQ=1536
>May 28 01:36:43 subzero kernel: IN=eth0 OUT=
>MAC=00:b0:d0:3d:84:1f:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=192.168.0.100 LEN=60 TOS=0x00 PREC=0x00 TTL=128 ID=51879 PROTO=ICMP
>TYPE=8 CODE=0 ID=512 SEQ=1792
>May 28 01:36:57 subzero kernel: IN=eth0 OUT=
>MAC=ff:ff:ff:ff:ff:ff:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=255.255.255.255 LEN=51 TOS=0x00 PREC=0x00 TTL=128 ID=51886 PROTO=UDP
>SPT=8167 DPT=8167 LEN=31
>May 28 01:36:59 subzero samba(pam_unix)[2284]: session closed for user 
>azeem
>May 28 01:38:09 subzero kernel: IN=eth0 OUT=
>MAC=ff:ff:ff:ff:ff:ff:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=255.255.255.255 LEN=81 TOS=0x00 PREC=0x00 TTL=128 ID=32 PROTO=UDP
>SPT=8167 DPT=8167 LEN=61
>May 28 01:38:09 subzero kernel: IN=eth0 OUT=
>MAC=ff:ff:ff:ff:ff:ff:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=255.255.255.255 LEN=45 TOS=0x00 PREC=0x00 TTL=128 ID=33 PROTO=UDP
>SPT=8167 DPT=8167 LEN=25
>May 28 01:38:09 subzero kernel: IN=eth0 OUT=
>MAC=ff:ff:ff:ff:ff:ff:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=255.255.255.255 LEN=45 TOS=0x00 PREC=0x00 TTL=128 ID=35 PROTO=UDP
>SPT=8167 DPT=8167 LEN=25
>May 28 01:38:29 subzero kernel: IN=eth0 OUT=
>MAC=ff:ff:ff:ff:ff:ff:00:07:e9:f4:4d:ce:08:00 SRC=192.168.0.2
>DST=255.255.255.255 LEN=45 TOS=0x00 PREC=0x00 TTL=128 ID=43 PROTO=UDP
>SPT=8167 DPT=8167 LEN=25
>May 28 01:38:59 subzero samba(pam_unix)[2552]: session opened for user must
>by (uid=0)
>May 28 01:39:33 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=7796 DF PROTO=TCP SPT=35625 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:39:36 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=7797 DF PROTO=TCP SPT=35625 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:39:42 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=7798 DF PROTO=TCP SPT=35625 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:39:50 subzero kernel: IN=ppp0 OUT= MAC= SRC=202.124.201.161
>DST=202.124.192.166 LEN=48 TOS=0x00 PREC=0x00 TTL=112 ID=38996 DF PROTO=TCP
>SPT=4811 DPT=2745 WINDOW=8760 RES=0x00 SYN URGP=14133
>May 28 01:39:54 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=7799 DF PROTO=TCP SPT=35625 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:40:18 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=7800 DF PROTO=TCP SPT=35625 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:41:06 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=7801 DF PROTO=TCP SPT=35625 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:41:33 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=8465 DF PROTO=TCP SPT=35699 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:41:36 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=8466 DF PROTO=TCP SPT=35699 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:41:42 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=8467 DF PROTO=TCP SPT=35699 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:41:54 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=8468 DF PROTO=TCP SPT=35699 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:42:18 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=8469 DF PROTO=TCP SPT=35699 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>May 28 01:42:32 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=65 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=32770 DPT=53 LEN=45
>May 28 01:43:06 subzero kernel: IN=lo OUT=
>MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1
>LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=8470 DF PROTO=TCP SPT=35699 DPT=80
>WINDOW=32767 RES=0x00 SYN URGP=0
>---------------------------------------------------------------------------
-
>---------------------------------------------------------
>
>Regards
>Azeem
> >From: <alexis@xxxxxxxxxxx>
> >To: "azeem ahmad" <azeem484@xxxxxxxxxxx>
> >CC: <netfilter@xxxxxxxxxxxxxxxxxxx>
> >Subject: RE: iptables and samba
> >Date: Thu, 27 May 2004 16:28:35 -0000
> >
> >it seems a name resolution issue.
> >
> >check if you're using WINS or DNS and make sure you're allowing those 
>ports
> >in orden to resolve the names. and it will work just fine
> >
> >azeem ahmad <azeem484@xxxxxxxxxxx> dijo:
> >
> > >
> > > no one out there could help me?
> > >
> > > >From: "azeem ahmad" <azeem484@xxxxxxxxxxx>
> > > >To: netfilter@xxxxxxxxxxxxxxxxxxx
> > > >Subject: iptables and samba
> > > >Date: Sun, 23 May 2004 09:20:52 +0000
> > > >
> > > >hi
> > > >i m using the script below
> > >
> >
>
>---------------------------------------------------------------------------
> >----------------------------------------------------------
> > > >iptables -F
> > > >iptables -t nat -F
> > > >iptables -P INPUT DROP
> > > >iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
> > > >iptables -A INPUT -i eth0 -p tcp --dport 8080 -j ACCEPT
> > > >iptables -A INPUT -i eth0 -p tcp --dport 22   -j ACCEPT
> > > >iptables -A INPUT -i eth0 -p tcp --dport 53   -j ACCEPT
> > > >iptables -A INPUT -i eth0 -p udp --dport 53   -j ACCEPT
> > > >iptables -A INPUT -i eth0 -p udp --dport 137  -j ACCEPT
> > > >iptables -A INPUT -i eth0 -p udp --dport 138  -j ACCEPT
> > > >iptables -A INPUT -i eth0 -p tcp --dport 139  -j ACCEPT
> > > >
> > > >iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port
> >8080
> > > >#iptables -t nat -A PREROUTING -p udp --dport 80 -j REDIRECT 
>--to-port
> >8080
> > > >
> > > >iptables -P FORWARD DROP
> > > >iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 21        -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 443       -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 5000      -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 5001      -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 5005      -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 5050      -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 6660:6670 -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 7000      -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 28805     -j ACCEPT
> > > >iptables -A FORWARD -i eth0 -p tcp --dport 51215     -j ACCEPT
> > > >
> > > >iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
> > >
> >
>
>---------------------------------------------------------------------------
> >----------------------------------------------------------
> > > >
> > > >i have two shares on samba server "Soft and linux" in these shares
> >there
> > > >are many folders. whenever i run the above script and then i open the
> >share
> > > >it takes atleast 4  minutes to open the share. but it doesnt take 
>time
> > > >while browsing inside share.
> > > >mean there is a folder on soft share like soft/adobe/acrobat/acrobat6
> > > >when i double click on soft it takes atleast 4 minutes but after that
> >when
> > > >i click on adobe then acrobat then acrobat6 it takes now time it just
> >brose
> > > >them normally. same problem is with the other share named linux.
> > > >but if i dont run this script then all shares work fine with no delay
> > > >
> > > >i dont know what is the udp port 80 for but i just saw its traffic on
> >my
> > > >network in iptraf so i included it in my script
> > > >
> > > >Regards
> > > >Azeem
> > > >
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> >
> >--
> >
> >
> >
>
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