Linux-Networking Digest #982, Volume #11 Fri, 23 Jul 99 08:13:23 EDT
Contents:
Re: linux and serial port access in C or C++ !!!!!!!!!!!!!!!!!! (Jan Andres)
Telnet problem. (Venantius)
Re: Periodic multicast traffic - why? ("Cliff")
Re: full duplex ("Michael Knigge")
LAT on Linux? (Michael Lambeck)
Re: Ipchains & Port Forward (geoff)
NT+Linux+lots of subnets (MK)
Changing my IP addresses ("Harold de Vries")
Re: linux proxy server ("Michael Knigge")
Re: IPX Networking (Valentin Abramov)
Re: How to use lpr -s switch? -r doesn't work.... (John McKown)
Re: setup without a CDROM ("Gary W. Sandvik")
High load average, low cpu usage when /home NFS mounted (Ole Jacob Taraldset)
Re: loging IP address ("Cowles, Steve")
Re: can't seem to connect ("Cowles, Steve")
Re: linux proxy server (Marc)
Re: HELP! IPCHAINS and FTP (Marc)
Automounter problem (Simon Burley)
nfsd/raid problem (Till Krech)
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Jan Andres)
Subject: Re: linux and serial port access in C or C++ !!!!!!!!!!!!!!!!!!
Date: 23 Jul 1999 07:18:20 GMT
In article <01becc3f$e94260c0$[EMAIL PROTECTED]>, Moussine wrote:
>Could you tell me how to have access (Read and Write) to the serial Port
>(COM1).
>I'd like to write my source in C. If you have exemples, I'll be please..
Have a look at the Serial-Programming-HOWTO.
ftp://sunsite.unc.edu/pub/Linux/docs/HOWTO/Serial-Programming-HOWTO/
>Could you reply at : [EMAIL PROTECTED]
I could. But I'm not going to. This is Usenet, not a mailing list.
--
Jan Andres
[EMAIL PROTECTED]
Ham radio: DH2JAN
------------------------------
From: Venantius <[EMAIL PROTECTED]>
Subject: Telnet problem.
Date: Fri, 23 Jul 1999 08:40:57 +0800
Hi,
I have setup a small networking in my house. It consists of 4 PCs. 3
win95 PCs and one is a Linux box. The Linux box acts as a file server
(running Samba). Now all my machines can ftp and ping the Linux box and
vice versa. But when it come to telnet, one of my win95 PC does not
connect - or rather it get stuck half war. When I telnet from this
particular machine, I get the first two greeting lines but never the
login prompt. All my other machines are fine.
I probed further and found that this problem only persists for certain
IP address. The following addresses have been assigned to the machines:
Linux box = 20.0.0.1
win95-1 = 20.0.0.2
win95-2 = 20.0.0.3
win95-3 = 20.0.0.4
No the strange thing is that only win95-2 (which has the IP 20.0.0.3)
has this problem. Can anyone help on this? I have posted this before
but the problem has not been solved yet.
Thanks a million in advance.
regards,
Venantius.
------------------------------
From: "Cliff" <[EMAIL PROTECTED]>
Subject: Re: Periodic multicast traffic - why?
Date: Mon, 19 Jul 1999 18:44:09 GMT
A Windows 98 system will broadcast to that IP upon boot up. I never
could figure out what M$ was up to with that. There doesn't seem to be any
way to keep the Windoze machine from doing it either. I don't think it will
cause any harm, at least it hasn't on my LAN yet, but you probably want to
block it just in case.
--
-Cliff
Views expressed are my own and not necessarily those of my employer
Concordia Net, Inc. When replying via email please use; cwheat at concordia
dot net not
root@localhost
[EMAIL PROTECTED] wrote in message <7mvgup$vej$[EMAIL PROTECTED]>...
>Good day!
>
>My ipchains-based firewall is receiving a multicast packet
>every 10 minutes or so (it varies) which I'm currently
>rejecting. I'm a TCI@Home cable modem user and the address
>of the incoming packet looks like it's either an @Home machine
>or another @Home users' machine.
>
>The packet log looks like this:
>
>Jul 19 08:25:06 <hostname> kernel: Packet log: input REJECT eth0
>PROTO=24.7.204.1:9 224.0.0.1:0 L=68 S=0x00 I=47382 F=0x0000 T=255 (#19)
>
[snip]
------------------------------
From: "Michael Knigge" <[EMAIL PROTECTED]>
Subject: Re: full duplex
Date: Fri, 23 Jul 1999 07:44:02 +0200
benjamin j snyder schrieb in Nachricht
<7n7jcv$jp8$[EMAIL PROTECTED]>...
>Is there anything special that I need to do to get Full duplex to work in
>linux? I have pruchased both a NIC and switch that are full-duplex
capable,
>and I REALLY want to take full advantage of it.
If you only have TWO Computers, connect them via a Crossover-Cable and
use Full-Duplex.
If you have more than TWO Computers, you have to use a Switch, FD will
not woth with Hubs...
Bye
Michael
------------------------------
From: Michael Lambeck <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux,maus.computer.linux
Subject: LAT on Linux?
Date: Fri, 23 Jul 1999 12:16:52 +0200
Reply-To: [EMAIL PROTECTED]
Michael Lambeck wrote:
> Hi,
> has anyone out there installed LAT (a DEC networking / printing
> language) on a
> linux PC yet ? If so, where can I get it?
>
> ml
>
> --
> Michael Lambeck
> IEAM TU Wien (E372)
> Gusshausstr. 25
> A-1040 Wien
> +43-1-58801-77252
> Fax: 58801-37299
--
Michael Lambeck
IEAM TU Wien (E372)
Gusshausstr. 25
A-1040 Wien
+43-1-58801-77252
Fax: 58801-37299
------------------------------
From: [EMAIL PROTECTED] (geoff)
Subject: Re: Ipchains & Port Forward
Reply-To: [EMAIL PROTECTED]
Date: Fri, 23 Jul 1999 08:24:18 GMT
On 22 Jul 1999 21:12:04 GMT, [EMAIL PROTECTED] wrote:
>
>There isn't an IPChains command to do what you want. But, I think the "redir"
>command (an IP Masq hack) will accomplish a port forward from 420 to 21.
>
>Look for it from the IP Masquerading homepage: http://members.home.net/ipmasq/
>
>
>>> > i want FTP requests on port 420 on my Linux BOX to be sent to
>>> > 192.168.0.2 ( local ) port 21
>>> > but i still want to keep my ftp in linux on port 21.
>
>
>
>"Miserable Glitches!"
> -- [EMAIL PROTECTED]
I just set this up tonite....*seems* to work. here is what I did...(I'm using
RedHat6)
in the /etc/rc.d/rc.firewall script
/sbin/ipchains -I forward -p tcp -s <external ip/subnetmask> <external port> -j
MASQ
/usr/sbin/ipmasqadm portfw -a -P tcp -L <external ip> <external port> -R
<internal ip> <internal port>
Example:
My ip to the outside world is 201.201.201.201 with a 24 bit subnet (class
C)...my internal subnet is on the 10.0.0.* range with a class C as well. I want
to forward all port 2000 traffic to my internal masqed ftp server at 10.0.0.50.
/sbin/ipchains -I forward -p tcp -s 201.201.201.201/24 2000 -j MASQ
/usr/sbin/ipmasqadm portfw -a -P tcp -L 201.201.201.201 2000 -R 10.0.0.50 21
ok this seems to work BUT, it will *NOT* work from the router *OR* any of the
masqed machines.. you /must/ test this from the "outside world".
geoff
--
Who is this Unix guy anyway?
------------------------------
From: MK <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc,redhat.networking.general
Subject: NT+Linux+lots of subnets
Date: 23 Jul 1999 08:31:13 GMT
Linux Geniuses!
I was wondering if you could help me and my school solve out linux/Nt
networking headache.
The school is running a NT4.0 server that has four network cards that are
connected to hubs that are located in the school. its IP is 10.15.16.1 and
the other cards IP's are 10.15.64.1, 10.15.48.1, 10.15.32.1, etc. The Nt
server acts as a gateway for traffic from these subnets. We are all using
DHCP assigned addresses but I reserved one for the linux box 10.15.64.7.
What I can ping is 10.15.16.1 the Server and the computers on the subnets
because I passed this route command "route add default gw 10.15.16.1" and
the it goes! The Ntserver is connected to another server running WinProxy
and it has 2 network cards, this computer handles the internet. I cannot
ping It! It's address is 10.15.0.1 the windowz boxes on the subnets can but
I cant! (dont worry my DNSes are set and everything) this Proxybox is a
router to the net it's other Ethernet card is connected to the net (complex
100mbit stuff, not important) it's IP is 10.15.88.1. I need to figure out
how to set my route in linux to be able to ping the ProxyBox and then
travel
to the internet. Can you offer any advice? Also the Proxybox is running
WinProxy for web and ftp transfers...do I have to worry about it? any thing
that I am required to set?
I am using RedHat 5.2 with kernel 2.0.36 and an eepro100 network card on a
pentium pro.
Thank-you in advance!
Michael Krygier
Jr. Unix network admin wannabe
================== Posted via SearchLinux ==================
http://www.searchlinux.com
------------------------------
From: "Harold de Vries" <[EMAIL PROTECTED]>
Subject: Changing my IP addresses
Date: Fri, 23 Jul 1999 12:35:12 +0200
This may sound silly, but I have to change the ip addresses of my network in
order to play a certain game on one of the Win98 clients. I am running a
Samba server on Redhat 5.2. When I change the IP's of the adapter and the
clients through Wincfg I can't login anymore with my clients. Are there
anymore files that contain the IP address(es)?
Please help me,
Mail me at [EMAIL PROTECTED]
Thanks in advance
------------------------------
From: "Michael Knigge" <[EMAIL PROTECTED]>
Subject: Re: linux proxy server
Date: Fri, 23 Jul 1999 11:02:12 +0200
[EMAIL PROTECTED] schrieb in Nachricht <7n8eb4$a2r$[EMAIL PROTECTED]>...
>all i want is to set up a proxy server for internet access with
>RH linux 5.2 does anyone else know how to do this or know
>of any place where i find anything about it which is written
>in plain english?
Hey, where is your problem? Just get Squid and install it.
It is not that difficult as it seems to. The config file
(preinstalled) is very big, but you only need to set three
or four options so Squid is ready to as YOU need it.
I also installed Squid some weeks ago (the first proxy I
installed ever) and it took me about 20 minutes (and 17
minutes of the 20 I needed to read the config file) ;-)
bye
Michael
------------------------------
Subject: Re: IPX Networking
From: [EMAIL PROTECTED] (Valentin Abramov)
Date: 23 Jul 1999 10:27:24 GMT
In article <7n8hpe$b16$[EMAIL PROTECTED]>, [EMAIL PROTECTED] says...
>
>
>It's Netware 4.11 and to clarify I'm using this Linux box as a ppp
>"server" to allow some of our users to connect remotely and provide them
>with the directory services, file and printer sharing that we have in
>place. If you happen to know of some more documentation or sites that
>may be of assistance I would appreciate it. I have read the HOWTOs on
>ppp and ipx and they were a good start.
>
>Thanx again.
>
>
Take a look to
http://www.tartu.customs.ee/linux/index.shtml
There is section about IPX over PPP. Hope it helps.
Regards,
Valentin Abramov
------------------------------
From: [EMAIL PROTECTED] (John McKown)
Crossposted-To: comp.os.linux.misc,comp.os.linux.setup
Subject: Re: How to use lpr -s switch? -r doesn't work....
Date: 23 Jul 1999 10:45:23 GMT
On Fri, 23 Jul 1999 04:44:52 GMT, Eric <[EMAIL PROTECTED]> wrote:
[snip]
>Does anyone know how I can use lpr to print using symbolic links (ie: the -s
>switch), and have lpr automatically delete the original file upon
>completion? I can't seem to get any combo of switches to work!
I'm running RH 6.0. On the man page (info lpr), the description of the -r
parameter says: (qouting)
-r remove the file upon completion of spooling. Can not be used with
the -s option, due to security concerns.
My guess is that the security concern is that some nasty person could use
the -r -s to delete a file which they only had read access to. Since the
lpd usually runs as a superuser, this could bypass normal permissions to
a file.
------------------------------
From: "Gary W. Sandvik" <[EMAIL PROTECTED]>
Subject: Re: setup without a CDROM
Date: Fri, 23 Jul 1999 05:50:16 -0500
Hi,
Yes it is possible to load Linux from the Win/9x machine.
What you can do is an NFS install from a Win/9x/NT server. What you need is
a NFS server software package. Several available on the web, try
www.shareware.com and search for NFS. Then download your choice, I found
Omni-NFS to be easy to setup and use.
Once you download the NFS and setting it up, you can then do a share with
the Linux box across your network for an NFS install. BTW, this is all
documented in the HOWTOs'.
--
Regards and God Speed,
Gary
Gary W. Sandvik
[EMAIL PROTECTED]
309-676-0224 (fax)
<[EMAIL PROTECTED]> wrote in message news:7n7ogi$2ae$[EMAIL PROTECTED]...
> Hello!
>
> I have an old 486 with no CDROM and no modem. I just bought a copy of
RedHat
> 5 real cheap (old version). Problem.
>
> Q1: I have a CDROM and modem on a Win95 machine.... is there anyway I can
> use these peripherals to load the RedHat onto the 486?
>
> Q2: The RedHat version came with 2 Cd's but the "boot floppies" weren't
in
> the box. Is this something you make from the CD or am I missing something
> (if so, where can I get them).
>
> thanks for any help!!
>
> Kathy
>
>
> Sent via Deja.com http://www.deja.com/
> Share what you know. Learn what you don't.
------------------------------
From: Ole Jacob Taraldset <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc,comp.os.linux.development.system
Subject: High load average, low cpu usage when /home NFS mounted
Date: Fri, 23 Jul 1999 12:47:16 +0200
I have a PII 450 MHz w/512 MB ram and a clean RedHat 6.0 w/updates. The
/home partition is NFS mounted from and SGI. When I take a look at cpu
usage i kpm/qps most of the cpu is idle (~85%), but load average reports
around 2. Isn't load average a function of cpu usage (only, mostly)? Can
it be that some process is running, but not showing in ps/top/kpm? I
feel that the system response has been reduced quite a bit after
upgrading to RedHat 6.0.
Please email me as well as post to this NG!
Ole Jacob
--
GexCon AS, Bergen, Norway <http://www.gexcon.com>
Tel : +47 55574334 (office) +47 55558650 (home)
Mob.tel. : +47 95080525 Fax : +47 55574331
PGP key : <http://home.c2i.net/ojt/pgp.txt>
------------------------------
From: "Cowles, Steve" <[EMAIL PROTECTED]>
Subject: Re: loging IP address
Date: Fri, 23 Jul 1999 06:24:09 -0500
George,
Unless you have modifed your /etc/syslog.conf file, logging info is already
contained in the following files.
/var/log/secure (ip address of telnet client along with username)
/var/log/xferlog (ftp)
/var/log/messages (authenticated user, plus most other logging)
/var/log/maillog (sendmail logging)
/var/log/httpd/log.whatever (setup by apache config files as to location)
Steve Cowles
SWCowles at gte dot net
George Genovezos <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> Hello
>
> How do I log IP addresses that log in from telnet, HTTP and FTP? I am
> using redhat
> 5.2 and apache 1.3.3
>
> Thanks
>
> Goerge
>
------------------------------
From: "Cowles, Steve" <[EMAIL PROTECTED]>
Subject: Re: can't seem to connect
Date: Fri, 23 Jul 1999 05:57:06 -0500
Rich,
Add all the client Hostname/IP pairs that are telneting to your Linux box to
the /etc/hosts file or make sure that the DNS server that your Linux box is
querying contains the reverse lookup info.
Also, by default, you cannot login as root using telnet (remotely). Only
from the console of the local machine. Simply add a user to the Linux box,
then telnet into the system using that account. Once you have logged in as a
regular user, you can then "su" to root as needed.
Steve Cowles
SWCowles at gte dot net
Rich <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
> I just set up a linux redhat 6.0, I can ping the box but when I try to
> telnet in it takes a long time to make the connection and then the
> login does not get validated. I'm trying to login as root. It seems
> like a combination of network settings and user rights Anyone have
> any ideas? I'm new to linux any help would be apreciated. Thanks in
> advance.
> Rich
------------------------------
From: Marc <[EMAIL PROTECTED]>
Subject: Re: linux proxy server
Date: Fri, 23 Jul 1999 13:02:14 +0200
I tried CSM proxy once but now I use ipchains to connect my lan thru a
linux
gateway to the internet.
[EMAIL PROTECTED] wrote:
> why can't i find anyone else who is in the same prediciment?
>
> all i want is to set up a proxy server for internet access with
> RH linux 5.2 does anyone else know how to do this or know
> of any place where i find anything about it which is written
> in plain english?
>
> Sent via Deja.com http://www.deja.com/
> Share what you know. Learn what you don't.
------------------------------
From: Marc <[EMAIL PROTECTED]>
Crossposted-To: redhat.networking.general
Subject: Re: HELP! IPCHAINS and FTP
Date: Fri, 23 Jul 1999 12:57:23 +0200
Monte Phillips wrote:
> Too easy! <G> You gotta enable ftp masq'ing
> try:
> insmod ip_masq_ftp
> if it works there will be no error messages.
> If it does error then make sure that the module is compiled.
>
> g'luk
It works, THANKS!
------------------------------
From: Simon Burley <[EMAIL PROTECTED]>
Subject: Automounter problem
Date: Fri, 23 Jul 1999 12:05:36 +0100
I wanted to set the automounter to mount machines onto /hosts, then
under the machine name I wanted to have the exported directories; ie.
/hosts/machine1/export1, /hosts/machine1/export2.
The man pages refer to needing a host map; but all our SGIs do this
without one. We're using an NIS server.
Is there a simple way to do this?
Simon
--
/* "C makes it easy to shoot yourself in the foot. C++ makes */
/* it harder, but when you do, it blows away your whole leg." */
/* -- Bjarne Stroustrup */
/* Simon Burley, Double Negative Ltd, London. */
------------------------------
From: Till Krech <[EMAIL PROTECTED]>
Subject: nfsd/raid problem
Date: Fri, 23 Jul 1999 13:28:28 +0200
Using Suse Linux 6.1 with kernel nfsd and an external daytona raid
system appearing as
one big 56 GB volume, I got the following syslog messages and finally
the nfsd didn't reply
anymore.
I was busy compiling on another host mounting this volume while this
happened.
A further problem was that I was neither be able to stop or to kill the
running nfsd processes.
Can anyone help ?
Jul 22 21:11:39 files kernel: nfsd_create: dentry zlib/contrib not
negative!
Jul 22 21:11:42 files kernel: nfsd_create: dentry egcs/libgcj not
negative!
Jul 22 21:11:42 files kernel: nfsd_create: dentry libgcj/zlib not
negative!
Jul 22 21:11:42 files kernel: nfsd_create: dentry zlib/contrib not
negative!
Jul 22 21:11:43 files kernel: nfsd_create: dentry egcs/libgcj not
negative!
Jul 22 21:11:43 files kernel: nfsd_create: dentry libgcj/zlib not
negative!
Jul 22 21:11:43 files kernel: nfsd_create: dentry egcs/libgcj not
negative!
Jul 22 21:11:43 files kernel: nfsd_create: dentry libgcj/zlib not
negative!
Jul 22 21:11:43 files kernel: nfsd_create: dentry egcs/libgcj not
negative!
Jul 22 21:11:43 files kernel: nfsd_create: dentry libgcj/zlib not
negative!
Jul 22 21:27:45 files kernel: find_fh_dentry: 08:11, 9824375/6289499 not
found -- need full search!
Jul 22 21:27:52 files kernel: find_fh_dentry: 08:11, 9824375/6289499 not
found -- need full search!
Till
------------------------------
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End of Linux-Networking Digest
******************************
