[Samba] samba+obsd+subnets
Leo R. Lundgren
spam at finalresort.org
Sat Jul 3 01:34:30 GMT 2004
Hello,
I'm having problems getting my samba setup to work at a little LAN i
partially maintain. I've been reading quite a lot about what I could think
of being related to my problems/setup, and I've also googled my ass off :(
So here I am, resorting to you guys in hope of help =] Sorry to say, but I
don't have much experience, and therefore I'm a bit lost at the moment. Not
sure what exactly to do to straighten this out.
So, my setup is as follows:
GAMMA 192.168.1.2
|
| 192.168.1.1
[Clavister FW]
| 192.168.0.1
|
ALFA 192.168.0.3
Client1-N DHCP
I've left out a number of irrelevant boxes. Everything of this is connected
through a switch, but is divided in two nets for minor reasons such as
logging etc. I'll call 192.168.0.0 net 0 and the other one net 1.
GAMMA runs OpenBSD 3.5 and Samba 2.2.9. Dmesg attached below.
ALFA is a Win 2003 Server, and Clients 1-N are a mix of mainly WinXP boxes.
The Clavister doesn't filter anything between the two nets, and has
directed broadcasts enabled (as does GAMMA, not sure if that's needed).
Please consider everything belonging to the workgroup THCCA, since that's
what should interest GAMMA :)
The clients and ALFA has their WINS server set to GAMMA, and gamma has it's
wins support on. My samba config for GAMMA is as follows:
---
[global]
remote announce = 192.168.0.255
netbios name = GAMMA
workgroup = THCCA
server string = THCCA GAMMA SMB-server
;;hosts allow = 192.168.
guest account = guest
log level = 2
max log size = 500
security = share
os level = 65
;;domain master = yes
preferred master = yes
wins support = yes
;;encrypt passwords = yes
load printers = no
[Gemensam]
comment = Common storage
path = /var/samba/storage/common
public = yes
only guest = yes
writable = yes
printable = no
---
So, what I want to do is basically make GAMMA part of the workgroup THCCA
on net 0. GAMMA is alone on net 1. At first I tried making GAMMA an LMB
and DMB, but I've now moved on to just using remote announce to try and
make it visible to the 192.168.0 LMB of THCCA, because of my troubles and
the fact that it seems nicer as long as I don't need any clients/smb-
servers residing on net 1. I figure that I the LMB gets aware of GAMMA, and
the WINS is working properly, everything should be fine ^^.
As you can see, there's one share, Gemensam, and it's verified to work well,
as does the server, when I put another browsing client on net 1.
However, GAMMA doesn't register in whoever is the MB of THCCA on the bcast
of net 0, and there are some issues to/part of it that I think are somewhat
basic to solving this (just a guesst though):
1) It seems that whatever UDP traffic GAMMA sends, tcpdump reports bad
checksum =/
2) Everytime i see samba sending it's remote announce broadcast, nothing is
returned.
3) I can't see anything going to port 137 on GAMMA, from net 0, which makes
me wonder why there's no traffic to the WINS server (GAMMA).
I'll start with `tcpdump -n -t -vv -p port 137 or 138 or 139`:
192.168.1.2.138 > 192.168.0.255.138: udp 223 (ttl 64, id 19089, bad cksum e7!)
192.168.1.2.138 > 192.168.1.255.138: udp 223 (ttl 64, id 27854, bad cksum e7!)
192.168.1.2.27750 > 192.168.1.214.139: S [bad tcp cksum cb94!] 2289896371:2289896371(0) win 16384 <mss 1460,nop,nop,sackOK,nop,wscale 0,nop,nop,timestamp 744041270 0> (DF) (ttl 64, id 36328, bad cksum 14!)
192.168.1.214.3173 > 192.168.1.2.139: F [tcp sum ok] 495:495(0) ack 325 win 63916 (DF) (ttl 128, id 28179)
192.168.1.2.139 > 192.168.1.214.3173: . [bad tcp cksum 3077!] ack 496 win 17520 (DF) (ttl 64, id 24982, bad cksum 14!)
192.168.1.2.139 > 192.168.1.214.3173: F [bad tcp cksum 2f77!] 325:325(0) ack 496 win 17520 (DF) (ttl 64, id 21299, bad cksum 14!)
192.168.1.214.3173 > 192.168.1.2.139: . [tcp sum ok] ack 326 win 63916 (DF) (ttl 128, id 28180)
Some snippets from the tcpdump to illustrate the bad checksum complaints.
I've looked everywhere for info on this, but without luck. As you can see
in the dmesg, there seems to be some weirdness with the xl0 drivers, but
except for samba, this box also serves DNS, XDMCP, Squid, and of course
SSH, which makes me look at other possible causes before thinking that's
the problem. I mean, there has been no problems what so ever except for
with this. Not saying anything though :)
In the first snippet line, samba tries to send a remote announce to the
bcast of net 0, at least I guess that's the case. But there's nothing
returned, never ever. Perhaps there shouldn't be anything returned, or
nothing is returned because the packet gets dropped by the target boxes
because they're faulty (chksum)?
And lastly, what could be the cause of there going no traffic to the samba
WINS? The interface is in promiscious mode, so I should most likely see it
if it was there :/ I see all kinds of smb traffic flowing around on the
other net, and there's a whole bunch of computers in the THCCA workgroup
on net 0..
Does anyone have a fine idea of what I should do here? I'm as I said, a bit
lost. I'm not sure where to go from here, nor which tools to use. I supply
a few command outputs below in the hope that you find some of it useful,
who knows :)
Sorry for a messy mail, might have something to do with the time, it's way
past sleeping hours :7
Greatest regards, and great thanks for any help I get. I'd be happy to
supply whatever details are needed.
Leo R. Lundgren
---
Temporary WinXP client on net 1> ping gamma
Sending signals to gamma [192.168.1.2] with 32 bytes of data:
Reply from 192.168.1.2: bytes=32 tid=2ms TTL=255
(Since I cannot nslookup gamma, the above should indeed utilize WINS)
---
Temporary WinXP client on net 1> nbtstat -a gamma
Node-IP-adress: [192.168.1.214] Scope-ID: []
NetBIOS-nametable for remote computer
Name Type Status
---------------------------------------------
GAMMA <00> UNIQUE Registered
GAMMA <03> UNIQUE Registered
GAMMA <20> UNIQUE Registered
..__MSBROWSE__.<01> GROUP Registered
THCCA <00> GROUP Registered
THCCA <1D> UNIQUE Registered
THCCA <1E> GROUP Registered
---
GAMMA# smbclient -N -L gamma
added interface ip=192.168.1.2 bcast=192.168.1.255 nmask=255.255.255.0
Domain=[THCCA] OS=[Unix] Server=[Samba 2.2.9]
Sharename Type Comment
--------- ---- -------
Gemensam Disk Gemensamt lagringsutrymme
IPC$ IPC IPC Service (THCCA GAMMA SMB-server)
ADMIN$ Disk IPC Service (THCCA GAMMA SMB-server)
Server Comment
--------- -------
GAMMA THCCA GAMMA SMB-server
ZAIR Temporary WinXP client on net 1
Workgroup Master
--------- -------
THCCA GAMMA
---
GAMMA# nmblookup __SAMBA__
querying __SAMBA__ on 192.168.1.255
name_query failed to find name __SAMBA__
GAMMA# nmblookup -M -
querying __MSBROWSE__ on 192.168.1.255
name_query failed to find name __MSBROWSE__#01
GAMMA# nmblookup -M '*' <-- Read this somewhere..
querying * on 192.168.1.255
name_query failed to find name *#1d
GAMMA# nmblookup -U 192.168.1.2 '*'
querying * on 192.168.1.2
192.168.1.2 *<00>
---
GAMMA dmesg:
OpenBSD 3.5-stable (GAMMA) #0: Tue Jun 29 11:27:50 CEST 2004
rawtaz at GAMMA.intra.net:/usr/src/sys/arch/i386/compile/GAMMA
cpu0: Intel(R) Celeron(R) CPU 1.80GHz ("GenuineIntel" 686-class) 2.03 GHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM
real mem = 535605248 (523052K)
avail mem = 490070016 (478584K)
using 4278 buffers containing 26882048 bytes (26252K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 04/22/03, BIOS32 rev. 0 @ 0xf0010
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev. 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev. 1.0 @ 0xf5410/256 (14 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801EB/ER LPC" rev 0x00)
pcibios0: PCI bus #2 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x800
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82865G/PE/P CPU-I/0-1" rev 0x02
ppb0 at pci0 dev 1 function 0 "Intel 82865G/PE/P CPU-AGP" rev 0x02
pci1 at ppb0 bus 1
uhci0 at pci0 dev 29 function 0 "Intel 82801EB/ER USB" rev 0x02: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 29 function 1 "Intel 82801EB/ER USB" rev 0x02: irq 5
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
"Intel 82801EB/ER USB" rev 0x02 at pci0 dev 29 function 7 not configured
ppb1 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0xc2
pci2 at ppb1 bus 2
vga1 at pci2 dev 9 function 0 "Matrox MGA 1064SG 220MHz" rev 0x03
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
xl0 at pci2 dev 13 function 0 "3Com 3c905C 100Base-TX" rev 0x78: irq 10xl0: command never completed!
xl0: command never completed!
xl0: command never completed!
address 00:04:75:fb:42:85
exphy0 at xl0 phy 24: 3Com internal media interface
xl0: command never completed!
xl0: command never completed!
xl0: command never completed!
pcib0 at pci0 dev 31 function 0 "Intel 82801EB/ER LPC" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 82801EB/ER IDE" rev 0x02: DMA, channel 0 configured to compatibility, channel 1 confi
gured to compatibility
wd0 at pciide0 channel 0 drive 0: <WDC WD400BB-00DEA0>
wd0: 16-sector PIO, LBA, 38166MB, 78165360 sectors
atapiscsi0 at pciide0 channel 0 drive 1
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <HL-DT-ST, CD-ROM GCR-8522B, 1.00> SCSI0 5/cdrom removable
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
cd0(pciide0:0:1): using PIO mode 0, DMA mode 1
wd1 at pciide0 channel 1 drive 0: <WDC WD1600JB-00EVA0>
wd1: 16-sector PIO, LBA48, 152627MB, 312581808 sectors
wd2 at pciide0 channel 1 drive 1: <WDC WD1600BB-00FTA0>
wd2: 16-sector PIO, LBA48, 152627MB, 312581808 sectors
wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 5
wd2(pciide0:1:1): using PIO mode 4, Ultra-DMA mode 5
"Intel 82801EB/ER SMBus" rev 0x02 at pci0 dev 31 function 3 not configured
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
lm0 at isa0 port 0x290/8: W83627THF
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask c860 netmask cc60 ttymask dce2
pctr: user-level cycle counter enabled
Kernelized RAIDframe activated
dkcsum: wd0 matched BIOS disk 80
dkcsum: wd1 matched BIOS disk 81
dkcsum: wd2 matched BIOS disk 82
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302
raid0: Component /dev/wd1a being configured at row: 0 col: 0
Row: 0 Column: 0 Num Rows: 1 Num Columns: 2
Version: 2 Serial Number: 12345 Mod Counter: 207
Clean: Yes Status: 0
raid0: Component /dev/wd2a being configured at row: 0 col: 1
Row: 0 Column: 1 Num Rows: 1 Num Columns: 2
Version: 2 Serial Number: 12345 Mod Counter: 207
Clean: Yes Status: 0
raid0 (root)
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