Linux-Networking Digest #246, Volume #11 Sat, 22 May 99 17:13:28 EDT
Contents:
Re: What's a cable modem... really? ("D. C. & M. V. Sessions")
Re: Linux as a server ("Maguai")
What's a cable modem... really? (Chris)
modem driver (bbryant)
Re: What's a cable modem... really? ("abn")
ifconfig RX/TX errors (Paul Farber)
Re: Syslog - /var/log/messages - How to Rotate ([EMAIL PROTECTED])
Redirection using ipchains? (bill davidsen)
Re: M$ is scared (bill davidsen)
PPP with MSCHAP - hint (bill davidsen)
Samba ARRRGGGHHH! (Mark Olbert)
Re: Login BellSouth via Linux ? (bill davidsen)
Re: Local IP addresses (bill davidsen)
Re: eth0:0 not showing on ifconfig - puzzled (bill davidsen)
Re: How do you setup @home on redhat 6.0? ([EMAIL PROTECTED])
3c509b croaked on 2.2.9 (root)
Re: Subnet Confusion (Clifford Kite)
Re: Samba and lpr problem (Roger Plant)
Re: 2.0.36 ipmasq dropping tcp connections (Brandon Casey)
Re: extending the file system (Mark Hahn)
host.allow and host.deny config help Please ("Jeff Robinson")
The World Wide Expo 7633 ([EMAIL PROTECTED])
----------------------------------------------------------------------------
From: "D. C. & M. V. Sessions" <[EMAIL PROTECTED]>
Subject: Re: What's a cable modem... really?
Date: Sat, 22 May 1999 11:39:02 -0700
Chris wrote:
>
> Ok... we all know a cable modem is a device that uses our cable provider
> for supposedly high-speed Internet access. But what is a cable modem...
> really? So far the externel cable modems available today require an
> ethernet card inside your machine. So I'm wondering... since the cable
> modem is essentially a network device (or is it?), is it functioning as a
> router? A bridge? I'm not very savvy on networking, so please excuse my
> ignorance.
Bridge.
> The reason why I'm asking is because I'm wondering if it is possible to
> hook two computers up to an ethernet hub... and have the cable modem as the
> third device on the hub. In other words, instead of having two ethernet
> cards in one computer (the one that has the internet connection), each
> machine would have one card and use the cable modem through the hub. I'm
> just asking this out of curiosity; I'm not going to try to do this (yet) :)
That depends on whether you want all of you local network traffic
to show up on the neighborhood cable, and all of the local neighborhood
cable traffic to show up on your local network. In the first case
there are some notable security and privacy issues; in the second, it
depends on whether you want your local network throughput to drop
whenever your neighbors do a download.
--
| Microsoft: "A reputation for releasing inferior software will make |
| it more difficult for a software vendor to induce customers to pay |
| for new products or new versions of existing products." |
+---------- D. C. & M. V. Sessions <[EMAIL PROTECTED]> ----------+
------------------------------
From: "Maguai" <[EMAIL PROTECTED]>
Crossposted-To:
z-netz.netzwerke.lan,z-netz.netzwerke.allgemein,z-netz.netzwerke.peer-to-peer,alt.os.linux,linux.samba
Subject: Re: Linux as a server
Date: Sat, 22 May 1999 17:55:33 GMT
Check this site
http://home.talkcity.com/MigrationPath/maguai/linuxhowto.html
Familie Brandhoff / Schrader <[EMAIL PROTECTED]> wrote
in message news:[EMAIL PROTECTED]...
> Hi!
>
> I got one P90 with S.u.s.e. Linux with kernel 2.0.36 and one P133 with
> both Win NT4 and Win95 on it.
>
> The P90 has a 3COM 3c509 network card, the P133 has a no name ISA PnP
> NE2000 comp. 10 Mbit LAN adapter.
>
> Now, I would like to use the Linux PC as an internet server for may
> little LAN. But I simply cannot manage it. Can you help?
>
> Oh, and if you would be so kind and would send me a copy of your answer
> as an email?
> Thanks!
>
> Dirk
>
------------------------------
From: Chris <[EMAIL PROTECTED]>
Subject: What's a cable modem... really?
Date: 22 May 1999 18:31:02 GMT
Ok... we all know a cable modem is a device that uses our cable provider
for supposedly high-speed Internet access. But what is a cable modem...
really? So far the externel cable modems available today require an
ethernet card inside your machine. So I'm wondering... since the cable
modem is essentially a network device (or is it?), is it functioning as a
router? A bridge? I'm not very savvy on networking, so please excuse my
ignorance.
The reason why I'm asking is because I'm wondering if it is possible to
hook two computers up to an ethernet hub... and have the cable modem as the
third device on the hub. In other words, instead of having two ethernet
cards in one computer (the one that has the internet connection), each
machine would have one card and use the cable modem through the hub. I'm
just asking this out of curiosity; I'm not going to try to do this (yet) :)
Thanks.
================== Posted via SearchLinux ==================
http://www.searchlinux.com
------------------------------
From: bbryant <[EMAIL PROTECTED]>
Subject: modem driver
Date: Sat, 22 May 1999 17:56:51 GMT
Is there a way that I can find out if a modem driver was installed when
I installed? I am using RedHat 5.2 and can not get my modem to work. I
cant't remember if when I installed I checked the option for networking.
--== Sent via Deja.com http://www.deja.com/ ==--
---Share what you know. Learn what you don't.---
------------------------------
From: "abn" <[EMAIL PROTECTED]>
Subject: Re: What's a cable modem... really?
Date: Sat, 22 May 1999 22:49:47 +0400
Hi, all!
Hi, Chris!
try to look: http://www.3com.com/cablenow/ (the best, i think)
another one: http://www.speed-demon.com/products.htm
and cisco have its own solution: $900 (cable modem+hubx)
[
PC <-> external modem <-> Telco-line...
or (PC+internal modem) <-> Telco line..
or PC <-> acces device (e.g. from SHIVA (Intel)) <-> Telco-line...
================== and look on cable' solutions =================
PC <-> external CABLE modem <-> HighFrequency CATV network with Up- and
Downstrem channels (if you have it, of course) (.. or there are telco-return
(for Downstream) cable modems)
or (PC+internal CABLE modem) <-> HighFrequency CATV network (if you have it)
or PC <-> access device (e.g. from cisco) <-> HighFrequency CATV network (if
you have it)
]
wbr, abn
Chris <[EMAIL PROTECTED]> wrote in message
news:7i6t56$4em$[EMAIL PROTECTED]...
> Ok... we all know a cable modem is a device that uses our cable provider
> for supposedly high-speed Internet access. But what is a cable modem...
> really? So far the externel cable modems available today require an
> ethernet card inside your machine. So I'm wondering... since the cable
> modem is essentially a network device (or is it?), is it functioning as a
> router? A bridge? I'm not very savvy on networking, so please excuse my
> ignorance.
>
> The reason why I'm asking is because I'm wondering if it is possible to
> hook two computers up to an ethernet hub... and have the cable modem as
the
> third device on the hub. In other words, instead of having two ethernet
> cards in one computer (the one that has the internet connection), each
> machine would have one card and use the cable modem through the hub. I'm
> just asking this out of curiosity; I'm not going to try to do this (yet)
:)
> Thanks.
>
> ------------------ Posted via SearchLinux ------------------
> http://www.searchlinux.com
------------------------------
From: Paul Farber <[EMAIL PROTECTED]>
Subject: ifconfig RX/TX errors
Date: Sun, 23 May 1999 02:51:40 -0400
Hello all
I have a RH 5.2 system runing a D-Link 500TX (tulip driver) and I get RX
and TX errors. Installed a new hub and tested all cables, they all seem
fine. What is the next step in troubleshooting these types of errors?
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.setup
Subject: Re: Syslog - /var/log/messages - How to Rotate
Date: 22 May 99 18:41:10 GMT
In article <[EMAIL PROTECTED]>, Alexander Samad wrote:
>How do I organise to rotate these or limit there size. I have just pointed
>some of our network devices (Cisco Routers + Catalyst) to syslog to my linux
>box and boy do they start to fill it up.
run a script out of cron to move around the log files to your liking
>Also how can I get the messages from say a specific router placed into its
>own file or directory
play with the syslog.conf file. if your unsure about priorities, run
syslogd in debug mode will all messages being logged to the console.
------------------------------
From: [EMAIL PROTECTED] (bill davidsen)
Subject: Redirection using ipchains?
Date: 22 May 1999 18:56:44 GMT
Am I missing something in ipchains? I would like to do redirection of
certain packets from another machine to a given port on another machine
on my network. Not masquerade, not port forwarding to a port on my
machine, just a general rewrite capability. The REDIRECT facility
doesn't seem to handle going to a remote host.
For example, connections to port 80 from a network would go to port 3100
on another machine, possibly on another network.
I am *not* looking for other ways to do this, I have several, I just
want to know if this capability is really missing, and I'd rather not
wade through the network code to see if I could do it using my own
ioctls or whatever. I did look at the code briefly, it didn't jump out
at me.
--
bill davidsen <[EMAIL PROTECTED]> CTO, TMR Associates, Inc
One common problem is mistyping an email address and creating another
valid, though unintended, recipient. Always check the recipient's
address carefully when sending personal information, such as credit
card numbers, death threats or offers of sexual services.
------------------------------
From: [EMAIL PROTECTED] (bill davidsen)
Subject: Re: M$ is scared
Date: 22 May 1999 19:11:36 GMT
In article <7i40ql$17r$[EMAIL PROTECTED]>, XonXoff <[EMAIL PROTECTED]> wrote:
| I just read this today and thought I'd pass it along.
| "
| Microsoft has started a group of about ten
| employees to counter the fast-growing, free
| operating system Linux, according to reports.
I heard on NPR that Korea is after MS for trade violations, due to MS
dumping product to counter the popularity of Linux in Korea. I have no
more details, it wasn't in my paper this morning.
--
bill davidsen <[EMAIL PROTECTED]> CTO, TMR Associates, Inc
One common problem is mistyping an email address and creating another
valid, though unintended, recipient. Always check the recipient's
address carefully when sending personal information, such as credit
card numbers, death threats or offers of sexual services.
------------------------------
From: [EMAIL PROTECTED] (bill davidsen)
Subject: PPP with MSCHAP - hint
Date: 22 May 1999 19:02:42 GMT
After spending half an hour trying to determine why a system was
offering pap to a RAS server and ignoring the chap80 (aka m$chap), I
discovered that there was a typo in the 'remotename' clause of the
startup script.
You *must* use a remotename option with chap80, it works much better if
you make it match the entry in the chap-secrets file. What you see if
your ppp offering the <auth pap> over and over. Hopefully this will help
someone else who can't type perfectly.
--
bill davidsen <[EMAIL PROTECTED]> CTO, TMR Associates, Inc
One common problem is mistyping an email address and creating another
valid, though unintended, recipient. Always check the recipient's
address carefully when sending personal information, such as credit
card numbers, death threats or offers of sexual services.
------------------------------
From: [EMAIL PROTECTED] (Mark Olbert)
Subject: Samba ARRRGGGHHH!
Date: Sat, 22 May 1999 19:14:11 GMT
Okay, I'm THOROUGHLY confused now about Samba. This is under RedHat
5.2.
I'm trying to set up a publicly-accessible directory on my Linux
server so that my Windows NT systems can see it over my TCP/IP
network.
(a) I've created a Linux user with the same name and password as my
main account on my Windows NT system.
(b) I've created a directory called /home/public on my Linux system,
and given everybody on the system the ability to do anything they want
to it.
(c) I've configured the smb.conf to access this directory by simply
uncommenting the supplied example of a publicly-accessible directory
and defining path = /home/public
(d) Under Windows NT I can SEE the bloody Linux server, but when I try
to open it, I get an "Incorrect user name" dialog box that prompts me
for a username and password... to which I supply the user name and
password I defined in step (a) above.
And the cheeky thing comes back and tells me I can't access the Linux
box!
So what am I doing wrong????
- Mark
------------------------------
From: [EMAIL PROTECTED] (bill davidsen)
Crossposted-To: bellsouth.net.support
Subject: Re: Login BellSouth via Linux ?
Date: 22 May 1999 19:15:53 GMT
In article <Zbi13.2502$[EMAIL PROTECTED]>,
Wild Cat <[EMAIL PROTECTED]> wrote:
| I try to use BellSouth with my LinuxBox and X-ISP. I believe that I have some
| troubles to know exactly want BellSouth requires for the connection. The link
| is made, but it stucks at <ogin:>. Apparently, the login is not sent or not
| received. I do not know if BellSouth requires a PAP-Secrets or CHAP-Secrets.
| In that case would they (BellSouth) mind giving their remotename ?
Several things to try:
- do they use username unstead of gogin?
- if they use CHAP/PAP the auth goes there, not in any prompted login.
- Be sure you don't have an extra "" in your connect script, that will
force a prompt with some POPs (Prodigy uses some like that).
--
bill davidsen <[EMAIL PROTECTED]> CTO, TMR Associates, Inc
One common problem is mistyping an email address and creating another
valid, though unintended, recipient. Always check the recipient's
address carefully when sending personal information, such as credit
card numbers, death threats or offers of sexual services.
------------------------------
From: [EMAIL PROTECTED] (bill davidsen)
Crossposted-To: comp.sys.next.sysadmin
Subject: Re: Local IP addresses
Date: 22 May 1999 19:29:07 GMT
In article <[EMAIL PROTECTED]>,
Rinaldi J. Montessi <[EMAIL PROTECTED]> wrote:
| Erik Jensen opined
| > Try 192.168.0.x
| >
| > that will rovide you with plenty. You should avoid using x = 1 and x =
| > 255, however.
| Could you please expound on that statement?
For any routed network, the address of all zeros is the network address
and the address of all ones is the broadcast address.
So:
192.168.0.0 network
192.168.0.255 broadcast
The use of .1 as the default router is common but not an inherent part
of the TCP world. This applies to the zero bits of the netmask, which in
most cases is 255.255.255.0 for home use.
I have 3 and 4 bit subnets, and worked at a place with a class A net with
12 bit subnetting. Amazing how much network software is broken and
assumes class a, B or C. If you don't know what this means, ignore this
paragraph or buy a book on networking. There is a lot of heavy magic
possible, and I'm only good with TCP, the router dudes have to deal with
IPX, Decnet, Chaosnet, five kinds of routing packets, etc, etc.
I can do a nifty TCP router or firewall, but have no illusions that I'm
a network heavy.
--
bill davidsen <[EMAIL PROTECTED]> CTO, TMR Associates, Inc
One common problem is mistyping an email address and creating another
valid, though unintended, recipient. Always check the recipient's
address carefully when sending personal information, such as credit
card numbers, death threats or offers of sexual services.
------------------------------
From: [EMAIL PROTECTED] (bill davidsen)
Subject: Re: eth0:0 not showing on ifconfig - puzzled
Date: 22 May 1999 19:18:39 GMT
In article <[EMAIL PROTECTED]>, sven vahar <[EMAIL PROTECTED]> wrote:
| hello
|
| i am puzzled over ip aliasing.
| i set up another ip on eth0 as follows:
|
| ifconfig ifconfig eth0:0 xxx.xxx.xxx.xxx
| route add -host xxx.xxx.xxx.xxx dev eth0:0
ifconfig eth0:0 x.x.x.x
--
bill davidsen <[EMAIL PROTECTED]> CTO, TMR Associates, Inc
One common problem is mistyping an email address and creating another
valid, though unintended, recipient. Always check the recipient's
address carefully when sending personal information, such as credit
card numbers, death threats or offers of sexual services.
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.setup
Subject: Re: How do you setup @home on redhat 6.0?
Date: 22 May 99 19:18:52 GMT
In article <[EMAIL PROTECTED]>, John Hovell wrote:
>the netmask is not necessarily 255.255.255.0. Mine is 255.255.255.192 for
>Optimum@home (New York / Connecticut).
the netmask controls whether packets go through the router or are broadcast
to the local lan. A netmask of 255.255.255.0 would work in your case,
you just wouldn't be able to access some machines that had IP in the same
class C address as yours.
>Dave Edick wrote:
>
>> Don't bother with DHCP under RH6. Just configure it with a static address.
>> Get the IP settings from your Windows setup by running winipcfg or the
>> original @home installation work order if you still have it. You'll need
>> the IP address, gateway, and DNS servers. The subnet mask is 255.255.255.0.
>> While you're still in Windows, you should also lookup your full domain
>> name and the addresses for the mail and news servers. Windows doesn't have
>> nslookup, so you have to use some weird command line option on ping to do
>> DNS lookups.
>>
>> On Wed, 12 May 1999 04:56:03 GMT, Mike <[EMAIL PROTECTED]> wrote:
>> >Hi,
>> >
>> > I I wondering how to set up @home on rh6 I have bashed my head against
>> >the keyboard for a week. Could somebody let me know how to do it. I have
>> >my ethernet card set up as eth0.
>> >
>> >Thanks in advance, I really appreciate it
>> >
>> >PS could you please CC to me thanks.
>> >
>> >Mike
>> >
>> >
>> >
>> >
>
------------------------------
From: root <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc
Subject: 3c509b croaked on 2.2.9
Date: Sat, 22 May 1999 16:07:06 -0400
My 3c509b (eth0) stopped working when I upgraded to 2.2.9. When I
recompile it as a module, and run insmod 3c509.o, I get a warning:
init_module: Device or resource busy
I get the same warnings when I try to activate the interface on startup.
Funny, it did seem to work under 2.2.7, yet I cannot find anything in the
change log to indicate how or why this might have become broken. So, I am
reluctantly preparing to downgrade back to 2.2.7 and see if this fixes the
problem.
I have disabled PNP in the bios, so that shouldn't be causing any
problems. Building it as an integral part of the kernel or as a module
seems to make no difference. Is there a hidden lock file somewhere? Did
some device number move?
------------------------------
From: kite@NoSpam.%inetport.com (Clifford Kite)
Subject: Re: Subnet Confusion
Date: 22 May 1999 11:11:56 -0500
Paul Michael Tevis ([EMAIL PROTECTED]) wrote:
: I'm attempting to get networking going on my Linux machine (Slackware
: 2.0.34) on one of my university's networks. For various security reasons,
: my IP address is not-world visible (i.e. no Internet for me) but it is
: supposed to be able to talk to the various machines on the several subnets
: that comprise the network. Here's the kicker. I'm on an private
: Ethernet (obviously) but most of the machines I'm trying to connect to are
: world-accessible, so obviously they are on a different subnet. I've been
: told by the local powers that be that in order to get this to work, I'm
: suppose to add static routes to these other subnets through myself.
: Specifically, incantations of the form:
: route add -net a.b.c.0 gw 'uname -n' metric 0
: How is this supposed to work? (It hasn't so far.) I can ping things on
I can't say how it's supposed to work, even if " ' " is replaced by
" ` " so that you actually get the host's IP address, but I do think
you're right that it's not the same in Linux.
In order to access a machine on a different LAN some machine on your
LAN has to be attached to another LAN and be able to correctly route
packets. The Linux solution for a leafnode box is to use the gateway
between the box's LAN and the rest of the university's networks for the
default route.
This is done using
route add default gw ${GATEWAY} metric 1
with the obvious substitution.
--
Clifford Kite <kite@inet%port.com> Not a guru. (tm)
/* Better is the enemy of good enough. */
------------------------------
From: [EMAIL PROTECTED] (Roger Plant)
Subject: Re: Samba and lpr problem
Date: Sat, 22 May 1999 13:13:08 GMT
On Fri, 21 May 1999 02:50:31 -0400, "Ryan Yetter"
<[EMAIL PROTECTED]> wrote:
>Ok, I've been searching everywhere for even a clue as to what would cause
>this. I have Samba 2.0.4 running under linux 2.2.9 (bastardized slackware
>distribution) as a server to 3 windows 98 machines. I have a printer share
>set up for an hp deskjet 722c. Now, it works under one condition, but not
>under another. Here are the conditions:
>
>If I run lpd [latest version of lprng under it] and then smbd after that
>while I'm logged in as root, it all works perfectly. BUT, if I run lpd and
>smbd from the rc* scripts, it won't work unless I kill both processes and
>rerun them as root. If I don't do this, the file is sent to the server, but
>the 'printer command' command won't run and the file will just sit there.
>It will only work if I run lpd and smbd manually after logging in as root.
>Any ideas appreciated.
>
A couple:
perhaps the path isn't set, so in the smb.conf file you may need to
set the print command to the full path of lpr.
If that doesnt work:
Try setting the print command to a script file, which just sits there
and maybe just loops, or writes something to the /tmp directory.
Then you can either look at the file in the tmp directory, or
do a ps on the script, and see who it is running as, and ensure they
have correct permisions.
Regards
Roger
===========================================================
Roger Plant :-) Email: [EMAIL PROTECTED]
===========================================================
------------------------------
From: Brandon Casey <[EMAIL PROTECTED]>
Subject: Re: 2.0.36 ipmasq dropping tcp connections
Date: Sat, 22 May 1999 14:37:48 -0500
Kai Krakow wrote:
>
>
> Did you try to set the firewall timeouts to higher values? I think the
> parameter was ipfwadm -S with three numeric parameters appended. Check out
> the man page on that...
>
> ciao
> Kai
thanks, this is what i found:
looking at the sources the timeouts for tcp tcp_fin and udp are
15 minutes, 2 minutes, and 5 minutes
respectively.(/usr/src/linux/include/net/ip_masq.h)
i used 'ipfwadm -M -s 900 120 500' to reset the timeouts to their
original
values in case they had been changed(because i didn't know how to find
out
what they were currently).
i can make a connection from the windows box to the outside network
through the linux box so that masquerading is used and then use the
command
'ipfwadm -M -l' to find out when the connection expires, and i can see
that
udp connections caused by a dns lookup expire after 5 minutes and tcp
connections(my telnet session) expire after 15 minutes resetting after
the
connection is busy again(e.g. when a character is typed).
if i leave the connection alone, it seems to stay up, the expire counter
counts down like it is supposed to, it's only when i start using the
connection that it disconnects. if i keep typing 'ls' it will
disconnect.
other thoughts/suggestions?
-brandon
[EMAIL PROTECTED]
------------------------------
From: Mark Hahn <[EMAIL PROTECTED]>
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 19:18:07 GMT
| 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.
how is this different from NFS, SMB or Coda?
------------------------------
From: "Jeff Robinson" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.setup,linux.redhat,linux.redhat.ppp
Subject: host.allow and host.deny config help Please
Date: Sat, 22 May 1999 16:44:41 -0400
i have this as a host.deny file
leafnode: ALL
i have this as a host.allow file
leafnode: 127.0.0.1 #<== local loopback network
leafnode: 192.168.0.* #<== local ehternet network
leafnode: 207.203.5.* #<== incomeing internet connections i let use
leafnode
the question is does tcpd understand the * wildcard
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To:
comp.os.linux.development.system,comp.os.linux.hardware,comp.os.linux.m68k,comp.os.linux.misc,comp.os.linux.portable,comp.os.linux.powerpc,comp.os.linux.setup,comp.os.linux.x,comp.os.lynx
Subject: The World Wide Expo 7633
Date: 22 May 1999 19:36:15 GMT
voskyxupefprrncchlgzkoxkkmpxeiuncxjxvwfryih
------------------------------
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End of Linux-Networking Digest
******************************
