Linux-Networking Digest #996, Volume #10 Fri, 30 Apr 99 15:13:43 EDT
Contents:
redhat 5.2- arps occur for network added via static route (Padma Krishnaswamy)
Re: Help: ping ok but can't telnet nor ftp (Pete)
Re: PPP or Masquerade problem (not sure which) (Clifford Kite)
Re: AS400 tools and connectivity? (Corey Ewing)
NIS+ installation error ([EMAIL PROTECTED])
NIS+ error ([EMAIL PROTECTED])
Re: ip aliasing help? (Tuan Hoang)
Re: ppp upgrade & ppp over minicom (Clifford Kite)
DNS ("Gilbert")
Re: DHCP - UDP packet error between Win95 & Linux - need help! (Les Hazelton)
RH5.2 network-scripts and routing. (Stephen Schwenker)
Re: Virus Warining - Just came in (NoTech)
Re: PORT-Defintion! (Phil DeBecker)
simply bringing up the interface (Rhino)
Re: Socks Proxy and Masqing.... (David Kennedy)
ip aliasing help? ("Scott MacDonald")
Re: Linux Uptimes ("Jan Johansson")
V.24 with X.21 ("roger jaeck")
Re: Linux Uptimes ("Jan Johansson")
mouse problem with xterminal kit ("Gerard Cornu")
----------------------------------------------------------------------------
From: Padma Krishnaswamy <[EMAIL PROTECTED]>
Subject: redhat 5.2- arps occur for network added via static route
Date: Fri, 30 Apr 1999 10:09:36 -0400
greetings
I have two dual ethernet ported linux workstations connected thru a
router.
One port-eth0- on each machine is for control, and is locatedon network
10; the other,eth1, is on a network 100.x.x.x on box A and 200.x.x.x on
box B respectively. These nets are isolated- to these pcs and the
router.
I ve used a route add to add a route for 200.x.x.x thru eth1 on A
and 100.x.x.x thru eth1 on box B.
When I try to ping (Im running tcpdump) each box arps for the
non-directly connected network and since it never gets an answer nothing
further happens.
In both cases the arp cache has entries for the router attached to eth1.
Why dont A and B route to the nets for which tere are static route
entries? Why do they arep?
Please post or email me at [EMAIL PROTECTED]
thanks
Padma
------------------------------
From: [EMAIL PROTECTED] (Pete)
Subject: Re: Help: ping ok but can't telnet nor ftp
Date: Fri, 30 Apr 1999 15:19:02 GMT
On Fri, 30 Apr 1999 05:44:57 GMT, [EMAIL PROTECTED] wrote:
>I have win98 and linux computers.
>The computers are connected using a crossover UTP.
>I can ping from either machine.
>when I tried to telnet from win98 to linux,
>I got error message "connection to host lost"
>when I tried to ftp from win98 to linux,
>I got error message " connect to x.x.x.x...
>connection closed by remote host"
>
>Any help would be greatly appreciated.
Actually check to see if /usr/sbin/ in.telnetd and in.ftpd are there.
I know the message you are seeing can be the result of having the
correct tcpd settings, but not having the daemons installed...
-Pete
------------------------------
From: kite@NoSpam.%inetport.com (Clifford Kite)
Subject: Re: PPP or Masquerade problem (not sure which)
Date: 29 Apr 1999 22:35:42 -0500
Skeeter Hartwig ([EMAIL PROTECTED]) wrote:
: On 29 Apr 1999 16:55:48 -0500, kite@NoSpam.%inetport.com (Clifford
: Kite) wrote:
: >If the problem is ISP specific *and* is caused by pppd configuration,
: >then the most likely source of trouble is the `mtu 552' that you specify
: >as a pppd option. This causes the ISP to have to fragment the larger
: >Ethernet packets and has been know to sometimes cause trouble when set
: >to a low value. I'd removing the option to see if the 1500 default
: >mtu helps.
: Actually, as far as I am aware, mtu applies to packets I am sending;
: mru applies to packets I receive. In any event, I have played with
Yes, you're right. Just a little to eager and a lot too dull-witted at
the time.
: both of these settings (even omitting them altogether) without any
: success. Also, as I said, the problem only occurs when the ppp box is
: masquerading the packets to/for another machine. Applications on the
: ppp box itself do not suffer from the problem; they receive all
: packets just fine, regardless of size. Any other suggestions?
The mtu was the only pppd-related thing that seems unusual. I can't
reasonably suggest anything in regard to masquerading since I haven't
done it yet.
--
Clifford Kite <kite@inet%port.com> Not a guru. (tm)
/* The wealth of a nation is created by the productive labor of its
* citizens. */
------------------------------
Date: Fri, 30 Apr 1999 09:19:18 -0600
From: Corey Ewing <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Re: AS400 tools and connectivity?
James,
There is a very good 5250 terminal emulation program that Michael
Madore has written. Go to http://www.blarg.net/~mmadore to download it.
James Tyrrell wrote:
> I was wondering if therre were any Linux programs or tools for
> connectivity with AS400 platforms?
>
> Thanks.
>
> Jim.
------------------------------
From: [EMAIL PROTECTED]
Subject: NIS+ installation error
Date: Fri, 30 Apr 1999 14:47:27 GMT
I downloaded the NIS+ utilities (nis-utils-1.1). However, after I run
configure, I run make and get an error.
The output is as follows,
xencrypt.c:51: rpc/des_crypt.h: No such file or directory
I searched my harddrive for des_crypt.h since xencrypt.c is trying to call it,
but it was not to be found.
Any help is greatly appreciated.
Jon
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------------------------------
From: [EMAIL PROTECTED]
Subject: NIS+ error
Date: Fri, 30 Apr 1999 15:17:32 GMT
I downloaded nis-utils-1.1 and ran configure which worked fine. However,
when I tried to run make I recieved the following error.
xencrypt.c:51: rpc/des_crypt.h: No such file or directory
I searched my harddrive for des_crypt.h since xencrypt.c is trying to call it,
but it was not to be found.
Any help would be appreciated.
Jon
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------------------------------
From: Tuan Hoang <[EMAIL PROTECTED]>
Subject: Re: ip aliasing help?
Date: Fri, 30 Apr 1999 11:27:28 -0400
Make sure your net-tools is up to date. Latest is 1.52 but rpms might
only be at 1.50.
I think what you have is ok or you could try this:
ifconfig eth0:0 192.168.1.1 netmask 255.255.255.0 broadcast
192.168.1.255
Seems to work for me. Incidently, aliases start at 0.
Hope this helps,
Tuan
Scott MacDonald wrote:
>
> Howdy!
>
> I want to ip alias a nic in my RH5.2-2.2.6 kernel box. I of course have no
> problem setting the netmask on this one, but how do you set the netmask on
> the alias? The netmask on the alias will be on a different network of
> private ip addresses than the eth0. Basically I want eth0 to have a live ip
> from a block masked out of our class c, and then alias the 192.168.x.x ip.
> Can I just do this:
>
> ifconfig eth0:1 192.168.x.x/24
>
> The how-to didn't really go into this, because all of the aliases were on
> the same network in the example. I'm reformatting now and have a little time
> to kill:-)
>
> Any help would be greatly appreciated! Thanks!
>
> Scott
--
Tuan Hoang
Senior Software Systems Engineer
The MITRE Corporation
Email: [EMAIL PROTECTED]
Voice: (732)389-6791
Fax: (732)544-8863
------------------------------
From: kite@NoSpam.%inetport.com (Clifford Kite)
Subject: Re: ppp upgrade & ppp over minicom
Date: 30 Apr 1999 10:26:05 -0500
James Lee ([EMAIL PROTECTED]) wrote:
: since pppd was forked from minicom (which was setuid)
: using runscript and the options are
: in a file in the following manner:
: ! /usr/sbin/pppd file /etc/ppp/minicom-ppp.options
: is it opened as root or user? Is it mandatory to put this options
: file inside /etc/ppp/peer/ before it is opened as root?
The honest answer to both questions is that I don't know. The clip
suggested to me that if you put the tty specification in /etc/ppp/options
then it should open for an ordinary user - although I can't be sure
that interpretation is correct.
I've never used runscript but I *think* the man pages say that the bang
is used to shell out and run a program. That means bash is invoked
and I doubt that bash can be run suid even if it's permissions are set
that way. It's possible that I could be wrong about that though.
: : You really ought to use pppd with chat - as the bombastic among us
: : are wont to say, it's the Right Thing To Do. ( To any that are tempted:
: : Don't bother - flames bounce off me and hit /dev/null without doing any
: : harm whatever. )
: Of course I know that I ought to use chat, and that is what I started
: with. When the line deteriorates, chat is not too forgiving on my
: lousy phone line. Maybe, there is some way to tweak it, but I haven't
: quite figured that out. Sometimes, chat can try to connect for 30
I have trouble envisioning a situation where the phone lines would prevent
chat connections and allow minicom connections. More likely the chat
script needs polishing, which is something I *could* help on should you
decide to post it.
--
Clifford Kite <kite@inet%port.com> Not a guru. (tm)
/* I gave up on politics when no matter who I voted for, I regretted it.
* -- Pepper...and Salt, WSJ */
------------------------------
From: "Gilbert" <[EMAIL PROTECTED]>
Subject: DNS
Date: Fri, 30 Apr 1999 13:00:08 +0200
Hi:
Until 2 days ago, our DNS Server was working well. Now when I try to start
it I got the following message: can't open '/etc/named.conf'
I never had this file before. I have named.boot
any idea ?
Many thanks
Gilbert
------------------------------
Date: Fri, 30 Apr 1999 09:49:42 -0400
From: Les Hazelton <[EMAIL PROTECTED]>
Subject: Re: DHCP - UDP packet error between Win95 & Linux - need help!
Stephen Carville wrote:
>
> Do you have a static route to 255.255.255.255/32 set up. I know it sounds
> dumb but to talk to the NT95/98 clients you need a static route like:
>
> any net 255.255.255.255 netmask 255.255.255.255 gw eth0
Stephen,
If I set my Win95 system to have a fixed non-dhcp IP address,
192.168.1.2, then all my communications work as expected. e.g., samba
file shares in both directions, ip masq access for the win95 system to
the outside world, printer shares etc... all work. However, with no
change to the linux box configuration, when I set the win95 system to
look for a dhcp supplied ip address, all that stops working.
If I issue a "netstat -nr" command, I get the following:
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
192.168.1.1 0.0.0.0 255.255.255.255 UH 0 0 0
eth0
204.146.253.185 0.0.0.0 255.255.255.255 UH 0 0 0
ppp0
255.255.255.255 0.0.0.0 255.255.255.255 UH 0 0 0
eth0
127.0.0.1 0.0.0.0 255.255.255.255 UH 0 0 0
lo
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0
eth0
0.0.0.0 204.146.253.185 0.0.0.0 UG 0 0 0
ppp0
Do I need something in addition to this?
Les Hazelton
============================================
Flattery will get you everywhere.
------------------------------
From: Stephen Schwenker <[EMAIL PROTECTED]>
Subject: RH5.2 network-scripts and routing.
Date: Fri, 30 Apr 1999 12:08:42 -0400
I am using rh5.2 and have used the control-panel to configure my network
on a machine, but when I try the route command it displays the lo part
and eth0 part then the program just sits there as if it wants me to
enter something or if more is to come but never does. I have to use
CTRL-C to get out of it. I have no gateway since it is an internal
network. There is no problem with getting to an of the macihnes on that
network but when I configured PPP to dial out with the information I got
from my ISP. everything connects fine with the modem but when I try to
get any computer out on the internet it doesn't work. Even if i try to
ping my dns by IP address. After doing that I check the ifconfig info
and once in a while i notice the error or colision count go up on my
eth0 device. so I am assuming the routing is wrong but I use the
defaultroute with the pppd.
If you require any more information please notify me.
Stephen Schwenker
------------------------------
From: [EMAIL PROTECTED] (NoTech)
Subject: Re: Virus Warining - Just came in
Date: 30 Apr 1999 16:22:45 GMT
Hi
As one less technical user: what can it do to the files owned by the user that
did read the e-mail ?
armand
In article <jM%V2.2155$2J5.507266@insync>,
"Lee Sharp" writes:
> pages... We can tell him than Linux is virus immune unless he is reading
> e-mail as root. :-) We can smile and laugh, because it beats crying over
> the fact that with the good of Linux going mainstream, we have to take the
> bad of less technical users in the newsgroups. <sigh>
>
------------------------------
Date: Thu, 29 Apr 1999 11:47:54 -0400
From: Phil DeBecker <[EMAIL PROTECTED]>
Subject: Re: PORT-Defintion!
WeinbergerS wrote:
> Hello,
> I want to create a Firewall with an LINUX-PC and now I need a Definition
> about the Ports (for example http = Port 80 and so on).
>
look in /etc/services
------------------------------
From: Rhino <[EMAIL PROTECTED]>
Subject: simply bringing up the interface
Date: Fri, 30 Apr 1999 17:41:33 GMT
Hello,
I recently bought a Dell Inspiron 3500, split the disk into two,
installed Red Hat 5.2, figured out how to load the pcmcia modules
into the kernel, and most recenlty, brought my new toy into work.
Today I'm trying to bring the network online (I'm familiar with
many, many versions of UNIX (Linux's sister)) but, so far, no luck.
I tried ifconfig eth0 up (like a Sun), and Network Configurator (kinka
like
a Mac or a grunt Windoze pc). Network configurator has all the fields
filled in. I tried both a static IP, and DHCP setup. The static
IP has the correct netmask, and a free IP, it is set to "active"
and looks like it should be working. ifconfig and ping tests say
otherwise. I have a lit link lite, but neither half/full duplex,
nor 10/100 are lit.
Can someone walk me through this? It seems like it should be simple.
Please reply via email, as I won't be able to check the newsgroup
every 15 mins. :-)
Regards, David
--
/*** - Chief Consultant - UNIX & NT NETWORK SECURITY, LLC - CEO - ****/
David R. Hawley [EMAIL PROTECTED] www.123netsecurity.net
Lao Tzsu is like the Dragon in it's ascent to Heaven I think, Confucis
/**** ******************* *****/
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------------------------------
From: [EMAIL PROTECTED] (David Kennedy)
Subject: Re: Socks Proxy and Masqing....
Date: Fri, 30 Apr 1999 14:00:57 GMT
I was going to do the same thing (Socks5). After doing some research
etc. I decided on IPmasq, it is alot easier to setup and configure.
In the back of my mind I still do not like the fact that I had to turn
on IP forwarding, but with the correct ipfwadm rules you should still
be protected.
For my stock Redhat 5.2 system with kernel 2.0.36 I have the following
modules in my /lib/modules/2.0.36/ipv4 directory:
ip_alias.o
ip_masq_irc.o
ip_masq_vdolive.o
ip_masq_cuseeme.o
ip_masq_quake.o
ipip.o
ip_masq_ftp.o
ip_masq_raudio.o
rarp.o
I don't see anything for ICQ and am not sure if 2.0.36 supports it.
Hope this helps out.
On Wed, 28 Apr 1999 23:19:00 GMT, [EMAIL PROTECTED] (Venpex)
wrote:
>I currently have a Linux box set up and Masqing my home network just dandy.
>The issue I have is trying to by pass a filter at work so that I can use ICQ.
>It seems that they have blocked out the UDP that I need to use - So I was
>hoping to set up a Socks server on my Linux box to accept my ICQ from work on
>the alternate port and output to the normal ICQ servers on the correct Port.
>
>I am questioning if Socks5 is what I want. Will it interfere with my currently
>configured IPMasqing? Is there anyway to do what I want without setting up
>Socks5?
>
>Any information would be VERY useful. Thanks
>
------------------------------
From: "Scott MacDonald" <[EMAIL PROTECTED]>
Subject: ip aliasing help?
Date: Fri, 30 Apr 1999 09:10:10 -0500
Howdy!
I want to ip alias a nic in my RH5.2-2.2.6 kernel box. I of course have no
problem setting the netmask on this one, but how do you set the netmask on
the alias? The netmask on the alias will be on a different network of
private ip addresses than the eth0. Basically I want eth0 to have a live ip
from a block masked out of our class c, and then alias the 192.168.x.x ip.
Can I just do this:
ifconfig eth0:1 192.168.x.x/24
The how-to didn't really go into this, because all of the aliases were on
the same network in the example. I'm reformatting now and have a little time
to kill:-)
Any help would be greatly appreciated! Thanks!
Scott
------------------------------
From: "Jan Johansson" <[EMAIL PROTECTED]>
Subject: Re: Linux Uptimes
Date: Fri, 30 Apr 1999 20:24:05 +0200
>I personally have never seen a windows NT box, either by me or someone
else,
>stay up longer than 30-60 days without needing a reboot for one reason or
>another.
We have a completely NT based Network and we are by far scandinavias biggest
IT Consultancy company (about 7800 employees) and there is no problem in
running NT's for months at the time, then again rebooting a system to (if
nothing else) flush the RAM is pretty common in all enviroments?
------------------------------
From: "roger jaeck" <[EMAIL PROTECTED]>
Subject: V.24 with X.21
Date: Fri, 30 Apr 1999 20:37:12 +0200
Hello,
Does anybody know how I use v.24 with X.21 with Linux.
Thanks a lot for your help
roger
------------------------------
From: "Jan Johansson" <[EMAIL PROTECTED]>
Subject: Re: Linux Uptimes
Date: Fri, 30 Apr 1999 20:22:29 +0200
>true. when you bring the server down for maintainence, that's one thing;
>it's quite another thing when the server decides it's time for some
>downtime on it's *own* schedule.
Yes, and also, these are clustered systems, so in MOST cases it is possible
to phase the maintenance between the nodes.. however, a failure during those
condiditions is a _really_ bad thing since you dont have a failover node
(been there!) ;=)
------------------------------
From: "Gerard Cornu" <[EMAIL PROTECTED]>
Subject: mouse problem with xterminal kit
Date: 30 Apr 99 18:43:50 +0100
Hello
I am using the xterminal kit from
ftp://ftp.solucorp.qc.ca/pub/xterm/xtermkit-990222.tar.gz
on a RedHat 5.2 Linux server, kernel 2.2.6.
I get the following message when starting X on the client
with /bin/xgo:
Cannot open mouse (Device or resource busy)
I removed gpm on the server to no avail.
I tested the client mouse under DOS on the same machine,
works fine.
So I am now sure this is a configuration/software problem.
But after one day spent tracking it, I made no progress,
so I'll be much grateful for any help ;)
All the best,
Gerard Cornu.
CRI
Universite Lumiere Lyon 2
------------------------------
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