Linux-Networking Digest #247, Volume #11 Sat, 22 May 99 20:13:22 EDT
Contents:
Kernel 2.2.x: PPP freezes (Kris)
Kernel 2.2 TCP incompatible with certain Unices? ([EMAIL PROTECTED])
Re: extending the file system (Dan Miner)
Re: Samba ARRRGGGHHH! (Chip Transisto)
Configuration for high-spec NFS server (Nick Williams)
YP,NIS,user logins (Paul Trost)
Re: How do I get fetchmail to just dowmload for one user ("Hubertus A. Haniel")
ipfwadm (Robert Kardell)
RHL/Samba/Gnome error ("W.A. Scheer")
routing (Nick)
ipchains on RH 5.2 ?? ("Eriksson")
Measuring quality of service of network connection (Anthony D. Tribelli)
IRC parameters ("Narcis Luca")
Samba 2.0.3 and Slackware 96 ("KERR, MIKE")
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Kris)
Subject: Kernel 2.2.x: PPP freezes
Date: Sat, 22 May 1999 20:07:12 GMT
Short description: Under kernel 2.2.x, the PPP connection simply appears
to freeze with nothing happening - no DNS, strange tcpdump output,
nothing. Everything works fine under kernel 2.0.36.
Long description: When using kernel 2.2.9 (and earlier versions), all
PPP connections freeze after I get my local and remote IP addressed in
/var/log/ppp.log. I can't telnet anywhere, perform DNS lookups, and I
can't even ping the remote nameserver(s) or remote IPs. I can, however,
ping my own IP.
I know that this is a symptom of using early versions of PPP(d), but
upgrading to 2.3.8 doesn't solve it. Neither does upgrading everything
on my system to the latest versions. I'm using Debian 2.1 slink, and
upgrading to what is essentially potato (libc6, etc) doesn't cure the
problem.
Things I've tried:
* Adding nobsdcomp, novj, novjccomp, and others (can't remember at
present) to my /etc/ppp/options file - don't have any effect.
* Compiling PPP into the kernel as a module & also directly into it.
* Not compiling the kernel with APM support (as that could have affected
things)
I don't have IP masquerading or any firewall in place, and my
hosts.{allow|deny} files are fine, as they work in 2.0.36. All modem
IRQs are set correctly.
Output from various things while connected:
# route -n
Destination Gateway Genmask Flags Metric Ref Use Iface
195.147.160.5 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
127.0.0.1 0.0.0.0 255.255.255.255 UH 0 0 0 lo
0.0.0.0 195.147.160.5 0.0.0.0 UG 0 0 0 ppp0
(I manually added loopback there, but leaving it without doesn't change
anything. (I now know that most route programs only show the loopback
interface in a /proc device)
# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
Collisions:0
ppp0 Link encap:Point-to-Point Protocol
inet addr:195.147.165.134 P-t-P:195.147.160.5
Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:13 errors:0 dropped:0 overruns:0 frame:0
TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
Collisions:0
# tcpdump -i ppp0 (single telnet to my POP3 mailbox (there are no
problems at the ISP end: it's fine within Windows))
195.147.165.134.1024 > 194.126.82.5.domain: 55880+ A?
mail.globalnet.co.uk. (38)
195.147.165.134.1024 > 194.126.86.9.domain: 55880+ A?
mail.globalnet.co.uk. (38)
195.147.165.134.1024 > 194.126.82.5.domain: 55880+ A?
mail.globalnet.co.uk. (38)
195.147.165.134.1024 > 194.126.86.9.domain: 55880+ A?
mail.globalnet.co.uk. (38)
195.147.165.134.1024 > 194.126.82.5.domain: 55880+ A?
mail.globalnet.co.uk. (38)
# egrep -v '#|^ *$' /etc/ppp/options
asyncmap 0 auth crtscts lock hide-password modem
noipdefault debug lcp-echo-interval 30
lcp-echo-failure 4 noipx
# /var/log/ppp.log (start and end trimmed, only showing pppd)
Serial connection established.
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS2
sent [LCP ConfReq id=0x1 <magic 0x277274c6> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x5b <asyncmap 0xa0000> <magic 0x1921c20> <pcomp>
<accomp>]
sent [LCP ConfRej id=0x5b <asyncmap 0xa0000>]
rcvd [LCP ConfReq id=0x5c <magic 0x1921c20> <pcomp> <accomp>]
sent [LCP ConfAck id=0x5c <magic 0x1921c20> <pcomp> <accomp>]
rcvd [IPCP ConfReq id=0xc6 <compress VJ 0f 00> <addr 195.147.160.5>]
sent [LCP ConfReq id=0x1 <magic 0x277274c6> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x5d <asyncmap 0xa0000> <magic 0x19227e9> <pcomp>
<accomp>]
sent [LCP ConfRej id=0x5d <asyncmap 0xa0000>]
rcvd [LCP ConfAck id=0x1 <magic 0x277274c6> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x5e <magic 0x19227e9> <pcomp> <accomp>]
sent [LCP ConfAck id=0x5e <magic 0x19227e9> <pcomp> <accomp>]
sent [LCP EchoReq id=0x0 magic=0x277274c6]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0>]
sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
rcvd [IPCP ConfReq id=0xc7 <compress VJ 0f 00> <addr 195.147.160.5>]
sent [IPCP ConfRej id=0xc7 <compress VJ 0f 00>]
rcvd [LCP EchoRep id=0x0 magic=0x19227e9]
rcvd [LCP ProtRej id=0x5f 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15
03 2f]
rcvd [IPCP ConfReq id=0xc8 <addr 195.147.160.5>]
sent [IPCP ConfAck id=0xc8 <addr 195.147.160.5>]
rcvd [IPCP ConfReq id=0xc9 <addr 195.147.160.5>]
sent [IPCP ConfAck id=0xc9 <addr 195.147.160.5>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0>]
rcvd [IPCP ConfNak id=0x1 <addr 195.147.165.134>]
sent [IPCP ConfReq id=0x2 <addr 195.147.165.134>]
rcvd [IPCP ConfAck id=0x2 <addr 195.147.165.134>]
local IP address 195.147.165.134
remote IP address 195.147.160.5
Script /etc/ppp/ip-up started; pid = 159
Script /etc/ppp/ip-up finished (pid 159), status = 0x0
I believe that's all the info anyone should require. If you need any
kdebug output or details of my kernel config, then I'll supply that,
too. I've spent at least �5 on phone bills trying to sort this out, but
nothing works.
So, if anyone can suggest anything, then please do :-) (please? Pretty
please with cherries on top?). I'll be e-mailing the pppd author if
no-one can solve this (that'll be my last resort, though).
Thanks in advance,
Kris
--
Kris
ICQ 10537480
[EMAIL PROTECTED] checked weekly(ish)
Use [EMAIL PROTECTED] for quicker response (+.co.uk)
------------------------------
From: [EMAIL PROTECTED]
Subject: Kernel 2.2 TCP incompatible with certain Unices?
Date: Sat, 22 May 1999 20:03:37 GMT
I would be grateful to hear from any TCP/IP gurus regarding this
puzzling problem.
I have an SMP Pentium Pro box that runs kernel 2.2.9. While the other
machines on the LAN (Windows and Linux) have no problems, this single
machine cannot fetch data from certain sites -- not all sites, just a
few. It seems to stall, even while the 2.0.36 machine next to it
happily downloads the site.
The two sites I've noticed this stall on are:
http://www.werbach.com
http://www.winfiles.com (sorry :)
It's interesting to note that queso reports that both these sites run
"BSDi or IRIX."
I've booted the SMP box back to a 2.0.36 kernel (the stock RH 5.2 one)
and it then works fine! Am I finding evidence that the 2.2 kernel (or
at least, the 2.2 kernel as I've configured it) has a TCP
incompatibility with a BSDi/IRIX TCP stack? For what it's worth, I've
not only tried recompiling the kernel as minimally as possible
(including non-SMP), I've also swapped NICs to see if it made a
difference; nothing changed the stalling. I've also ruled out the
firewall by deactivating it. I've been using GNU 'wget' in runlevel 3
to do this testing.
I'm happy to hear any and all suggestions! Thanks.
Regards,
Chris Powell
--
Christopher Powell Brick and Ivy Corporate Consulting
[EMAIL PROTECTED] http://www.brickandivy.com/
--== Sent via Deja.com http://www.deja.com/ ==--
---Share what you know. Learn what you don't.---
------------------------------
From: [EMAIL PROTECTED] (Dan Miner)
Crossposted-To:
comp.os.linux.development.system,comp.os.linux.development,it.comp.linux.development,linux.dev.kernel
Subject: Re: extending the file system
Date: 22 May 1999 19:45:07 GMT
Bush Chui ([EMAIL PROTECTED]) wrote:
: I am goning to extend the file system of Linux to enable file sharing
: over the Internet. The goal is to let files in a remote computer be
: assessed as if they were in the local file system.
: Can this be achieved? If it can, where should I start? (I am new to
: Linux programming.) Is there any book or web site that can provide me
: information?
: Thanks.
I suggest you investigate all of the file systems for Linux. You'll find
that there are a few of them already.
NFS (mostly UNIX)
Coda (totally new)
SMB/Samba (LanManager/MS file and printer sharing)
These are just the obvious systems which are "just lying around". You can
find all of them in the newer 2.2 kernels.
Happy hacking,
Dan
--
Dan Miner [EMAIL PROTECTED] | | Doing
Programmer/ | | Linux
Linux Consultant | "What yonder light Windows 95 breaks?" | since
http://www.nyx.net/~dminer/ | "Free software: The New Frontier" | v0.12
------------------------------
From: [EMAIL PROTECTED] (Chip Transisto)
Subject: Re: Samba ARRRGGGHHH!
Date: Sat, 22 May 1999 21:17:46 GMT
Reply-To: Chip Transisto
In your smb.conf file makd SURE that your "workgroup = ???" is the
same as the workgroup listed in NT under indentification.
Change "security = user" to security = share"
On Sat, 22 May 1999 19:14:11 GMT, [EMAIL PROTECTED] (Mark Olbert)
wrote:
>Okay, I'm THOROUGHLY confused now about Samba. This is under RedHat
>5.2.
>
>I'm trying to set up a publicly-accessible directory on my Linux
>server so that my Windows NT systems can see it over my TCP/IP
>network.
>
>(a) I've created a Linux user with the same name and password as my
>main account on my Windows NT system.
>
>(b) I've created a directory called /home/public on my Linux system,
>and given everybody on the system the ability to do anything they want
>to it.
>
>(c) I've configured the smb.conf to access this directory by simply
>uncommenting the supplied example of a publicly-accessible directory
>and defining path = /home/public
>
>(d) Under Windows NT I can SEE the bloody Linux server, but when I try
>to open it, I get an "Incorrect user name" dialog box that prompts me
>for a username and password... to which I supply the user name and
>password I defined in step (a) above.
>
>And the cheeky thing comes back and tells me I can't access the Linux
>box!
>
>So what am I doing wrong????
>
>- Mark
------------------------------
From: [EMAIL PROTECTED] (Nick Williams)
Crossposted-To: comp.os.linux.misc,comp.os.linux.hardware
Subject: Configuration for high-spec NFS server
Date: 22 May 1999 22:07:51 +0100
Hi there,
I'm involved in specifying a new server for a research group,
which requires a high performance NFS server. Under
consideration are a Sun Enterprise 450 with a StorEdge A1000
external RAID box running Solaris, or a PC-based Linux solution,
as detailed below.
I'm interested in the likely NFS throughputs that could be
expected from this configuration, as well as any helpful
comments as to the general suitability of the design.
Server configuration:
* Dual/Quad Intel Pentium III Xeon (512K LII) at 500MHz
* 1GB ECC EDO RAM
* Mylex eXtremeRAID 1100 64bit PCI RAID Controller (64MB cache)
* 6 x 36.4GB Seagate Barracuda LVD Ultra-2 SCSI disks (3 per
channel on the RAID controller - in RAID 5 array)
* 3Com 3C985 Gigabit Ethernet NIC
Network configuration:
* 3Com Switch 3300 10/100 (48 ports total) with Gigabit modules
Client configuration:
* Mixed Sun hardware, from SparcStation 4 to Ultra 60
* Miscellaneous PC Linux boxes (Pentium II)
System load:
* 15-20 simultaneous users
* Typically multi-gigabyte datasets stored as UNIX files
* 50/50 read/write load
--
[ Nick Williams Office - 01865-(2)79252 ]
[ Computing Officer Mobile - 07775-637124 ]
[ New College, Oxford http://www.new.ox.ac.uk/~nick/ ]
------------------------------
From: Paul Trost <[EMAIL PROTECTED]>
Subject: YP,NIS,user logins
Date: 22 May 1999 21:31:03 GMT
I have SuSE 6.0 on both my workstations and my server. I have yp,NIS,and
NFS set up and working. I have my user account set up on my server and am
using yp to access it from my workstation. I know how to mount my home
directory from my server under /home/username on my workstation. My
question is, how can I set it up where my rights will work on a NFS share.
Locally, when I write a file it sets the username and group name according
to my login. Writing to a NFS share the username get sets to "nobody" and
the group to "nogroup". If someone could recommend a good book on linux
networking I would be very grateful.
Paul
================== Posted via SearchLinux ==================
http://www.searchlinux.com
------------------------------
From: "Hubertus A. Haniel" <[EMAIL PROTECTED]>
Crossposted-To: demon.ip.support.unix,uk.comp.os.linux,comp.mail.misc
Subject: Re: How do I get fetchmail to just dowmload for one user
Date: Sat, 22 May 1999 23:25:10 +0100
I don't know why you people bother, I just get my mail delivered via
SMTP, that has always worked fine for me and I just have an alias file
so everything gets sorted to different accounts.
Hubertus Haniel
MikeVW <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> On Sat, 15 May 99 15:22:20 GMT, Phil Hunt <[EMAIL PROTECTED]>
wrote:
> >That works now, thanks. But it is still very slow, I have to stay
> >logged on for some time before I get my mail downloaded for me. Is
> >this because Demon is slow, or because fetchmail waits before
> >polling pop3.demon.co.uk?
>
> I've noticed that fetchmail is a little slow but not that bad. I
useally
> run it in the background with the command, fetchmail -d 600, this way
I
> don't even see it and it dls mail every 10 minutes automatically.
>
> >Is it possible to get it to run a program when each email arrives, as
> >well as getting it sent to sendmail? I want to make it beep when I
> >get new mail.
>
> >Could I use procmail to get stuff put into different mailboxes? If
so,
> >do I need to do anything specific when I run fetchmail?
>
> Yes, this is what I do. Here is one filter rule for your .procmailrc
file:
>
> :0
> * ^Received.*(\[153\.3[2-9]|\[208\.25[0-5]|uu.net)
> {
> :0c
> flush
> :0
> | ~/wav/plunk
> }
>
> This rule scans the header of all incoming mail, screens out uu.net
spam
> and puts it in a folder called plunk. It activates this script that
makes
> a toilet flushing sound as it does. Here's the script:
>
>
> cat - > /dev/null
> wavplay ~/wav/flush.wav
>
> I love procmail!
>
> --
> Trying to prevent arterial clogging of my CPU from eating too much
spam!
> Change the spam in my address to spring to reply. Stop the inspamity!
> Visit my website www.mindspring.com/~us015148
> This is a Microsoft Free message.
> .........
> `:::' ....... ......
> ::: * `::. ::'
> ::: .:: .:.::. .:: .:: `::. :'
> ::: :: :: :: :: :: .::.
> ::: .::. .:: ::. `::::. .:' ::.
> ...:::.....................::' .::::..
> The choice of a GNU generation
> UNIX is user friendly. It's just selective about who its friends are.
------------------------------
From: Robert Kardell <[EMAIL PROTECTED]>
Subject: ipfwadm
Date: Sat, 22 May 1999 17:05:49 -0500
I have a small network which all get routed through a Slackware machine
using ipfwadm. I want to monitor the masqueraded packets but I can't
seem to get it to work. Here is the line I have added:
ipfwadm -F -a m -S 192.168.8.1/24 -D 0.0.0.0/0 -o
I thought the "-o" at the end of the line would allow me to do this - is
this right?
Any help would be appreciated.
Bob
[EMAIL PROTECTED]
------------------------------
Date: Sat, 22 May 1999 15:51:19 -0700
From: "W.A. Scheer" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: RHL/Samba/Gnome error
I have used the smbmount command to mount a WinNT Server 'share' on my
RHL6.0 box as /mnt/smb
Accessing this share/mount point works 100% fine fronm either a command
prompt or through programs like StarOffice, gEdit, Gnumeric, etc..
However when attempting to use the Gnome File Manager, 'clicking' into
the /mnt/smb directory causes the following error msg to appear:
'File exists but can not be stat-ed. ICON? No Such file or directory'
This msg appears in a pop-up window, and can _usually_ be handily
dispatched by clicking the 'OK' button. You can then do whatever you
want within the /mnt/smb directory. The message will occasionaly
reappear.
A good prt of the time, however, the 'OK' button appears as dimmed and
as such cannot be clicked. Worse, the entire X-session is hung up at
this point!
This seems to be something to with a messed-up inode? Any tip, hints,
fixes, etc?
TIA
W.A. Scheer
------------------------------
From: Nick <[EMAIL PROTECTED]>
Subject: routing
Date: Sat, 22 May 1999 23:04:09 GMT
I want to set up my 486/66, 20 meg ram to be a router and mail server.
I am getting a 56k modem fairly soon, but I need to know how to set up
the software end first. I am running RedHat 6.0, and I can't figure out
the routing stuff at all. The mail server end should supposedly work
now. I edited the inetd.conf file and uncommented the line that had the
"pop3d" tag on it, but I still can't get authentication.
--Nick
------------------------------
From: "Eriksson" <[EMAIL PROTECTED]>
Subject: ipchains on RH 5.2 ??
Date: Sun, 23 May 1999 00:59:25 +0200
After trying IP masq on Slackware (2.0.36) I bought a new computer and
installed Red Hat 5.2 (2.2.4) cause I couldn't get the PPP connection going
with slackware..
I read the IPCHAINS-HOWTO and tried to get the damn thing to work but
noooo...
My questions:
a) WHERE should I write the ipchains configuration commands?
b) WHAT configuration commands should I write??
Thanx a mill!
/Martin
P.S How do you add new users on Red Hat 5.2 without having to edit
/etc/passwd directly?
------------------------------
Crossposted-To: comp.unix.bsd.freebsd.misc
From: [EMAIL PROTECTED] (Anthony D. Tribelli)
Subject: Measuring quality of service of network connection
Date: Sat, 22 May 1999 22:37:32 GMT
Are there any Linux or FreeBSD tools that measure the quality of service
of a network connection? We just had DSL installed at work and there are
often 30 to 45 second 'blackouts' where there is no communication. It's
not machine specific, all of our machines note the events simultaneously.
I would like to document these 'blackouts'. I'm thinking of hacking up the
ping source but I feel that it would be a safe bet that something already
exists. I wouldn't bet against something already existing in the Linux of
FreeBSD distribution. Thanks for any info.
Tony
--
==================
Tony Tribelli
[EMAIL PROTECTED]
------------------------------
From: "Narcis Luca" <[EMAIL PROTECTED]>
Subject: IRC parameters
Date: 22 May 1999 23:04:12 GMT
Is there any way to join a channel with irc using parameters???
if I write irc -c #channel <nick> <server> it sais 'missing parameter'
and if I write irc -c channel <nick> <server> it can't find the channel
without #
Can you help??
------------------------------
From: "KERR, MIKE" <[EMAIL PROTECTED]>
Subject: Samba 2.0.3 and Slackware 96
Date: Mon, 17 May 1999 06:28:00 -0400
I'm running Slackware 96 that is (soon to be I hope) running on a
Windows NT network.
I'm wondering if Samba version 2.0.3 will run on Slackware 96.
Thanks for any help you guys can offer.
Mike
------------------------------
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End of Linux-Networking Digest
******************************
