name server problems: tcpdump shows "tcp port netbios-ssn unreachable"

[Adam Monsen]

Ahh, many sleepless nights spent on a stinky Windows 98 box!

I'm using Samba 2.2.0 with Red Hat Linux 7.1, and am having trouble 
resolving the samba server. I went through the "fault tree" in the "Using 
Samba" book, and this was the section I got stuck on. Do I need to be 
running a name server besides nmbd? nmblookup returns some results:

----------8<----------
[root at exodus samba]# nmblookup -d2 exodus bruski
added interface ip=192.168.1.2 bcast=192.168.1.255 nmask=255.255.255.0
querying exodus on 192.168.1.255
name_query failed to find name exodus
querying bruski on 192.168.1.255
Got a positive name query response from 192.168.1.100 ( 192.168.1.100 )
192.168.1.100 bruski<00>
----------8<----------

bruski is a Win98 box, exodus is the samba server. smbclient works fine on 
the server, but the Win98 box never sees the server. When I try the domain 
logon, it says "No domain server was available to validate your password..."

Here's my smb.conf. It's not at all secure, but that's not an issue right 
now.

----------8<----------
[global]
	workgroup = PANAMA
	netbios name = EXODUS
	server string = Samba Server
	log file = /var/log/samba/%m.log
	max log size = 0
	socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
	domain logons = yes
	domain master = yes
	allow trusted domains = yes
	dns proxy = yes
	hosts allow = 192.168.1. 127. 192.168.1.100
	printing = lprng
# this next one is dangerous!!!
	browseable = yes
	wins support = yes
	name resolve order = wins lmhosts bcast
	encrypt passwords = no
	null passwords = yes
	remote announce = 192.168.1.2/exodus

[homes]
	comment = Home Directories
	writeable = yes
	browseable = yes

[printers]
	comment = All Printers
	path = /var/spool/samba
	printable = yes
	browseable = no

[test]
        comment = For testing only, please
	path = /tmp
        read only = no
        guest ok = yes
	browseable = yes
----------8<----------


here's some stuff from smbclient:

----------8<----------
[root at exodus lib]# smbclient -U% -L exodus
added interface ip=192.168.1.2 bcast=192.168.1.255 nmask=255.255.255.0
Got a positive name query response from 127.0.0.1 ( 192.168.1.2 )
Domain=[PANAMA] OS=[Unix] Server=[Samba 2.2.0]

	Sharename      Type      Comment
	---------      ----      -------
	homes          Disk      Home Directories
	test           Disk      For testing only, please
	IPC$           IPC       IPC Service (Samba Server)
	ADMIN$         Disk      IPC Service (Samba Server)

	Server               Comment
	---------            -------
	EXODUS               Samba Server

	Workgroup            Master
	---------            -------
	PANAMA               EXODUS
[root at exodus lib]# smbclient -U% -L bruski
added interface ip=192.168.1.2 bcast=192.168.1.255 nmask=255.255.255.0
Got a positive name query response from 127.0.0.1 ( 192.168.1.100 )

	Sharename      Type      Comment
	---------      ----      -------
	C              Disk      main hd
	IPC$           IPC       Remote Inter Process Communication

	Server               Comment
	---------            -------
	BRUSKI               Bruce Scott was here

	Workgroup            Master
	---------            -------
	PANAMA               BRUSKI
----------8<----------

yet more info, this time from tcpdump (I cropped out two interesting 
entries). The first error (...ssn unreachable...) goes away after one 
appearance, but the second one (...ns...) is recurring.
----------8<----------
[root at exodus /root]# tcpdump -v -s 255 -i eth0 port not telnet
...
23:58:18.463315 > exodus.panama.net > bruski.panama: icmp: exodus.panama.net 
tcp port netbios-ssn unreachable (DF) [tos 0xc0]  (ttl 255, id 16706)
...
23:58:43.463315 > exodus.panama.net > bruski.panama: icmp: exodus.panama.net 
udp port netbios-ns unreachable (DF) [tos 0xc0]  (ttl 255, id 17218)
----------8<----------

help me! help! please! I am a crazy fool with this networking stuff.

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