Linux-Networking Digest #714, Volume #11 Tue, 29 Jun 99 05:13:45 EDT
Contents:
Re: If I had a gun.... ("Andrey Smirnov")
Re: Why not C++ (Matt Austern)
Re: Ethernet and DHCP (Failed...) (Joseph)
Re: Samba & Win 9x clients: automatically mapping drives (Gord Mc.Pherson)
mail problem: can't receive! (Ray Clouse)
Re: FTP and IPchains\Masquerading (Paul Rusty Russell)
NFS writes hang: client on 100MB, server on 10MB segment (Peter Mutsaers)
Accessing internal WWW with IPCHAINS ("eLicT")
Re: DHCP/DNS/Behind FW => slow internet
Re: NFS writes hang: client on 100MB, server on 10MB segment ("Frank Bauer")
Re: ISP Newcomer Needs Help ("Richard Ward")
Network sleep under Red Hat 6 ("Dirk")
Re: NFS writes hang: client on 100MB, server on 10MB segment (Peter Mutsaers)
Re: The best route (Bill Unruh)
----------------------------------------------------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Subject: Re: If I had a gun....
Date: Mon, 28 Jun 1999 22:54:26 -0700
No arp entries on both machines (incomplete means nothing) only means that
you have a hardware issue. Check your nics, hub, check if you have proper
drivers for nic card under Linux. May be try to use crossover cable instead
of a hub, etc.
When you solve your hardware issue, then you can focus on setting up TCP
network.
Good luck!
James R. Barnett, Jr. wrote in message <[EMAIL PROTECTED]>...
>Andrey Smirnov wrote:
>>
>> If you don't get any output while pinging it means that packets are going
>> out and you don't get a reply from destination host. Check your routes.
Who
>> initiates the ping windows or linux box?
>>
>> What about your arp table after you tried to ping?
>>
>Pinging from the Linux box (arson) to the windows box (tireiron),
>running arp -a gives:
>tireiron.toughguys.org (192.168.1.2) at <incomplete> on eth0
>
>If I ping from win to linux, arp -a on the win box gives "No ARP Entries
>Found" before and after the ping.
>
>My hub has leds for each port and the led corresponding to the pinging
>machine blinks, but not the receiving led does not.
>
>Hope this info helps you help me :)
>
>JamesB
------------------------------
From: Matt Austern <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.development.apps,comp.os.linux.development.system,comp.lang.c++
Subject: Re: Why not C++
Date: 28 Jun 1999 23:10:57 -0700
[EMAIL PROTECTED] (Isaac) writes:
> On 28 Jun 1999 18:34:13 -0700, Nathan Myers <[EMAIL PROTECTED]> wrote:
> >Isaac <[EMAIL PROTECTED]> wrote:
> >Curiously, the list above almost matches the chronology of the
> >introduction of features, starting from C with Classes.
> >As such, it's suspect.
> >
>
> I don't understand why this makes it suspect, but in any event
> the list was my personal preference. Perhaps your list is better
> but I don't think ALMOST matching some other list makes mine
> suspect.
"Suspect" doesn't mean "wrong". It's suspect because it suggests that
this list (and I'm sure Nathan doesn't mean to pick on you
personally!) is heavily influenced by which features happen to be most
familiar to you. Naturally, everyone is going to see more uses for a
feature they've been using for ten years than for one they first tried
a few months ago. Nobody really has a completely balanced perspective
here.
> >Some people -- notably, the author of STL -- have no use for classes
> >(inheriting or otherwise), and promote templates above all.
> >
> I'd consider this opinion valid, but if your goal is object oriented
> programming, then why wouldn't a list which emphasizes those aspects
> be reasonable?
Alex's goal isn't object oriented programming.
------------------------------
From: Joseph <[EMAIL PROTECTED]>
Crossposted-To: redhat.networking.general,redhat.config
Subject: Re: Ethernet and DHCP (Failed...)
Date: 28 Jun 1999 19:31:27 GMT
TS Stahl, yes my college ethernet network uses DHCP :)
TS Stahl wrote:
> I'm not trying to patronize you, but do you have a DHCP server somewhere
on
> the network to service you?
>
> Joseph wrote:
>
> > Hi! I am using a SMC Ethercard Elite16 Ultra (using the smc-ultra.o
> >
> > module). I told RedHat 5.0 through the control panel to activate my
> >
> > ethernet card on boot with DHCP. But when I startup it tells me that
> >
> > contacting the DHCP server failed. How can I get this setup and
working
> >
> > right? Thanks a lot for your help! :~)
> >
> > Joseph
> >
> > ------------------ Posted via SearchLinux ------------------
> > http://www.searchlinux.com
>
> --
> TS Stahl
>
>
================== Posted via SearchLinux ==================
http://www.searchlinux.com
------------------------------
From: Gord Mc.Pherson <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc
Subject: Re: Samba & Win 9x clients: automatically mapping drives
Date: 28 Jun 1999 19:31:04 GMT
Lee Allen wrote:
> Under Samba, I (think) I have to "map a network drive" on the Win 9x
> client via point & click. If the client ever boots when the server is
> down (or not available), then the client will display a prompt, "Do
> you want to reconnect the next time you log in?" If the user says
> "No", the mapping is gone, and must be recreated manually.
>
> How can we avoid this problem? Is there some script capability in Win
> 9x that remap the drives for us?
If I understand this problem, you might want to check out NET.EXE located
in the Windows root directory. I use Samba to execute a batchfile that maps
all networked drives on each windows95 machine. Hope this helps some.
Gord Mc.Pherson
email: [EMAIL PROTECTED]
================== Posted via SearchLinux ==================
http://www.searchlinux.com
------------------------------
From: Ray Clouse <[EMAIL PROTECTED]>
Subject: mail problem: can't receive!
Date: Mon, 28 Jun 1999 13:32:11 -0700
Something in my network security administration got screwed up and I can
no longer receive mail!
I'm on a cable modem and I have a dedicated box set up as my
router/firewall. Let's say router.lan, and the remote is remote.lan.
When I send an e-mail to [EMAIL PROTECTED], I get the following:
remote:~ 2>mail -v [EMAIL PROTECTED]
Subject: asdf
adsf
Cc:
[EMAIL PROTECTED] Connecting to router.lan. via esmtp...
[EMAIL PROTECTED] Deferred: Connection refused by router.lan.
That occurs whether the user exists or not. Something got hosed up in the
permissions, but I haven't found this addressed in the LDP or in Usenet or
in the HOWTOs.
Please reply here and to my work address. TIA.
=========================================================================
Ray Clouse I'M HAPPY BECAUSE I EAT LARD.
Cypress, CA USA
Ray.Clouse AT boeing.com
rclouse AT penguinpowered.com
------------------------------
Subject: Re: FTP and IPchains\Masquerading
From: Paul Rusty Russell <[EMAIL PROTECTED]>
Date: 28 Jun 1999 22:34:15 +0930
[EMAIL PROTECTED] (Ian) writes:
> Hello I wonder if anyone can help me?
> I have been trying and failing to access a company ftp site that is
> not running on port 21 (the reasons for this are a paranoid IT
> Director who decided it would be best to keep our sensitive data as
> well hidden as possible).
> I am am running a small home network using a RH6 machine as my web
> gateway using ipchains\masquerading, everything else works ok just
> the ftp side is giving me hell. I get as far as the LIST -L command in
> my ftp client (Cuteftp) and it just hangs until I stop the process.
> Cute tells me it "couldnt build a data connection".
Either tell Cuteftp to use passive FTP (no module required), or
`insmod ip_masq_ftp ports=21,12345'.
Rusty.
--
Tridge, Raster, DaveM, Cort, maddog... Where will you be 9-11 July 1999?
http://www.linux.org.au/projects/calu
------------------------------
From: Peter Mutsaers <[EMAIL PROTECTED]>
Subject: NFS writes hang: client on 100MB, server on 10MB segment
Date: 29 Jun 1999 09:00:44 +0200
A little while ago I reported that a Linux client hangs after it has
written several kilobytes to a NFS server (Solaris, SGI).
Someone replied, guessing right that the client is on a 100MB/s
eth.segment and the server on a 10MB/s segment.
So, apparently this is a known problem with the 2.2.x kernels?
Is there any way to make NFS writing work in this situation? I realy
need to be able to read and write to our NFS servers, and our client
segments really are 100MB.
I switched to FreeBSD for the moment, which is fine, but I intended to
use Vmware which is why I need Linux.
Thanks in advance,
--
Peter Mutsaers | Abcoude (Utrecht), | Trust me, I know
[EMAIL PROTECTED] | the Netherlands | what I'm doing.
------------------------------
From: "eLicT" <[EMAIL PROTECTED]>
Subject: Accessing internal WWW with IPCHAINS
Date: Tue, 29 Jun 1999 07:04:02 GMT
I set up ipchains/ipmasqadm to forward all requests to my internal www
server (10.0.0.12). I have a single public ip. The www is accessable from
outside the linux box... but from the inside tring my public ip to connect
to the internal gets me nowhere... of course using the internal 10.0.0.12
works... why is this? Everything else works fine.
Here is what i used for ipmasqadm
================================================
ipmasqadm -a -P tcp -L <publicip> 80 -R 10.0.0.12
The problem seems to be that from my machine 10.0.0.10, using my public ip
will not redirect me to 10.0.0.12... is there a way to correct this?
Thanks!
-e
------------------------------
From: <[EMAIL PROTECTED]>
Subject: Re: DHCP/DNS/Behind FW => slow internet
Date: 29 Jun 1999 07:30:43 GMT
Hi,
The problem was due to the TCP timestamping mechanism in
Linux. When it was turned off everything works fine!!
I used this fix:
echo \000 -n > /proc/sys/net/ipv4/tcp_timestamps
I guess it should be in '/etc/rc.d/rc.local' or something
similar to be active at boot time.
The TCP timestamp caused the network to be extremely slow.
I don't know the exact reason but it seems like packages
where fragmented and I also belive there where probelms
with sequence numbering. I haven't analysed the problem
in detail because I am no Linux guru.
Is this a well known problem/bug?
/Christer
Christer Olsson wrote:
> Hi,
> I have a networking problem with my Linux (SuSE 6.1)
> installation.
>
> At my company we reach the internet through a proxy
> server and I've got my IP address through a DHCP server.
> We also use aDNS.
>
> I can use all services inside our domain. Ftp, rlogin,
> telnet, e-mail and reach our intranet through Netscape 4.51
> (or some other browser like Arena). That is, I can reach
> everything that is not using the proxy.
>
> But as soon as I try to access some address outside our
> domain from a WWW browser everything gets *very* slow.
> When hit 'go' the proxy is contacted and the first
> info from the page pops up quite fast but then it all hangs.
> Sometimes forever and sometimes after a *long* wait the
> rest is displayed (it is a bit different depending on the address,
> some pages are totally stone dead).
>
> I have dual-boot on my PC, Linux/NT, and on Windows NT with
> exactly the same hardware, Netscape settings and DHCP server
> everything works fine. I also have a Sun Solaris 2.6 machine which
> also works perfect with the same Netscape settings.
>
> I can do 'nslookup' on our proxy and I have tried with a fixed
> IP address instead of DHCP but the same problem is still there.
>
> As far as I can understand my '/etc/resolv.conf', '/etc/rc.config'
> and '/etc/route.conf' looks fine. But of course I'am not an
> networking expert. Any hints that could lead me forward would
> by very much appreciated. Below I have attached some data and
> I can mentioned that I have used the SuSE configuration tool
> 'yast' to configure my network settings.
>
> thanks
> / Christer
>
> My machine name:
> ----------------
> mypc218 (mypc218.ks.andersson.se)
>
> Dynamically allocated IP address (DHCP)
> --------------------------------------
> 151.133.44.43
>
> /etc/resolv.conf
> ----------------
> search ks.andersson.se
> nameserver 151.133.40.28
> nameserver 151.133.40.14
>
> /etc/route.conf
> ---------------
> 151.133.44.0 0.0.0.0 255.255.255.0 eth0
> default 151.133.46.1
>
> 'netstat -rnv' gives:
> ---------------------
> Kernel IP routing table
> Destination Gateway Genmask Flags MSS Window irtt Iface
> 151.133.44.43 0.0.0.0 255.255.255.255 UH 0 0 0 dummy0
>
> 151.133.44.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
> 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
> 0.0.0.0 151.133.44.1 0.0.0.0 UG 0 0 0 eth0
>
> 'route' gives:
> --------------
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> mypc218.ks.ande * 255.255.255.255 UH 1 0 0
> dummy0
> ksnet44.ks.ander * 255.255.255.0 U 0 0 0
> eth0
> loopback * 255.0.0.0 U 0
> 0 0 lo
> default ksrsk6da.ks.and 0.0.0.0 UG 0
> 0 0 eth0
>
> 'cat /etc/hosts' gives:
> -----------------------
> 127.0.0.1 localhost
> 151.133.40.14 solstam.ks.andersson.se solstam
> 151.133.40.28 ms.ks.andersson.se ms
> 151.133.44.43 mypc218.ks.andersson.se mypc218
> 151.88.253.11 www-proxy.andersson.se www-proxy
>
>
================== Posted via SearchLinux ==================
http://www.searchlinux.com
------------------------------
From: "Frank Bauer" <[EMAIL PROTECTED]>
Subject: Re: NFS writes hang: client on 100MB, server on 10MB segment
Date: Tue, 29 Jun 1999 09:06:48 +0200
> Someone replied, guessing right that the client is on a 100MB/s
> eth.segment and the server on a 10MB/s segment.
>
> So, apparently this is a known problem with the 2.2.x kernels?
>
normally, your network switch must manage the way of your data (and also the
speed of the data), so that it wouldn't in my opinion not a problem of the
kernels.....
HTH
Frank
------------------------------
From: "Richard Ward" <[EMAIL PROTECTED]>
Subject: Re: ISP Newcomer Needs Help
Date: Tue, 29 Jun 1999 08:49:22 +0200
If you're looking for routers, there is the Linux Router Project, which is
something like putting an entire router on a stiffy.
Do a search for them, then all you need to run it is an old 486 or
something.
try:
www.linuxrouter.org
hope this helps.
Jonathan Guthrie wrote in message <7l6c00$1bjf$[EMAIL PROTECTED]>...
>Alphatee <[EMAIL PROTECTED]> wrote:
>
>> I have been given the task of creating and or becoming an ISP. I do not
>> know anything about this bounty and would appreciate any direction as
>> to where to start and where to go. I have yet to know where to start
>> and what I need to know.
>
>I recommend seeing a good psychologist: If you want to become an ISP,
>and you don't know how, then you're crazy!
>
>> I have been reading about TCP/IP, Routers among others. I would
>> appreciate who, where and how to buy necessary equipments. I need to
>> start ASAP. My initial customer base is estimated to be 500 people. I
>> need an immdiate help.
>
>And why are you asking on comp.os.linux.networking?
>
>Since you'll, no doubt, find the foregoing not at all useful, here's a
>real deal.
>
>Look, you'll need a bunch of equipment. Where and how you buy what you
>need depends upon how much money you have and how credit worthy you are.
>Unless you've got some kind of death wish, it'll likely take you 4-6
>months to sign up 500 customers. (There simply aren't enough hours in the
>day. At the start, each customer will take 0.25-1 hour of support time to
>set up. That time will be reduced as you get better at setting them up.)
>12-16 months is a more reasonable estimate for the time it takes to get to
>500 customers unless you've got an actual list of customers already.
>
>Unless you're capable of basically building everything from scratch (and
>borrowing the rest) you're looking at sinking or financing
>$50,000-$100,000 US. You'll likely get a negative return on your
>investment for 3-5 years (more if you include what you could have been
>earning at a real job) and perhaps break even after that. This is a
>competitive business with few barriers to entry, at least in the USA.
>
>If you find THAT nonuseful, try this Web site:
>
>http://www.amazing.com/isp
>
>which has the new Internet provider faq.
>--
>Jonathan Guthrie ([EMAIL PROTECTED])
>Brokersys +281-895-8101 http://www.brokersys.com/
>12703 Veterans Memorial #106, Houston, TX 77014, USA
------------------------------
From: "Dirk" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.help
Subject: Network sleep under Red Hat 6
Date: Tue, 29 Jun 1999 08:39:56 +0100
I recently re-installed my Debian "Hamm" box with Red Hat v6. I now have a
problem. It appears that after a few minutes of inactivity, the network card
goes to sleep and will only wakeup on an outgoing connection. I've checked
out the PC's BIOS & I've got APM disabled (it's a Fujitsu PC and the BIOS in
these things is awful) AFAIK - the PC's not changed since it had Debian on
anyway. The NIC's a 3c509.
I've got a temporary fix - a cron job which pings another machine once a
minute - but I need to know why this is happening. Looking though stuff at
deja.com, I've seen this problem reported a number of times but haven't
found an answer yet.
Any clues?
Cheers
Dirk
------------------------------
From: Peter Mutsaers <[EMAIL PROTECTED]>
Subject: Re: NFS writes hang: client on 100MB, server on 10MB segment
Date: 29 Jun 1999 09:57:35 +0200
>> "FB" == Frank Bauer <[EMAIL PROTECTED]> writes:
FB> normally, your network switch must manage the way of your data
FB> (and also the speed of the data), so that it wouldn't in my
FB> opinion not a problem of the kernels.....
The router & switch are OK. It works with NT NFS clients, and with
FreeBSD. Linux 2.2.x seems to have a bug which shows in this
circumstance (client much faster than server).
------------------------------
From: [EMAIL PROTECTED] (Bill Unruh)
Subject: Re: The best route
Date: 29 Jun 1999 07:40:16 GMT
In <7l81j9$igl$[EMAIL PROTECTED]> [EMAIL PROTECTED] writes:
>have Interent access. I am using a Linux box,
>486dx2/66 32mb ram 540mbHD which i would like to
>dial-up to an ISP. I have read the FAQs, and will
>configure the box to run right with ppp, thats not
>the issue. I need to know what to use to get
>these other's to connect to. I am assuming i need
In short:
IP Forwarding.
IP masquarading
diald
and finally set up the routes on your other machines to point to the
Linux machine as their default gateway.
------------------------------
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End of Linux-Networking Digest
******************************
