Linux-Networking Digest #271, Volume #10 Sun, 21 Feb 99 13:13:39 EST
Contents:
tcpdump-crash ("Stefan M. Ritter")
Telnet mysteriously non-functional, refuses connections (Porphyrous)
Re: Having a SLIP connection terminate after no TCP/IP activity (John Thompson)
Re: Autodial to Internet (Ville Nummela)
Re: Diald problem - dialing on its own ("Ricardo Canani")
Re: Mount NSFT volume from Linux (Jeremy D. Zawodny)
Can Linux do proxy arp ? (Leif Thuresson)
CNet USA Pro120B Driver? ("Billy Newport")
Re: ppp server problem (Clifford Kite)
network is unreachable ("*")
Re: ipfwadm + mail server (Matt Kressel)
Re: _Good_ (support 5+ systems) Monitor/Mouse/Keyboard switch for pc... (Yan Seiner)
Help Me!!!! Help! ("kok")
Re: I give up with Linux and Win8 network ("Carl R. Friend")
Re: Multilink PPP in Linux with 2 x V90 = 105,333 bps? (Mark Evans)
Re: Firewall with 1 IP ([EMAIL PROTECTED])
Re: Machine name themes - what do you use? (Yan Seiner)
Re: Parsing TCPDUMP output (John Belew)
Re: Machine name themes - what do you use? ("FERD")
Re: printing to JetDirect problem (Clarence Wilkerson)
Configuring off network with 3c509 ("Bob Stickel")
Re: PCI modems in linux? ("Bob Stickel")
Re: _Good_ (support 5+ systems) Monitor/Mouse/Keyboard switch for pc... ("Frank
Sexton")
----------------------------------------------------------------------------
From: "Stefan M. Ritter" <[EMAIL PROTECTED]>
Subject: tcpdump-crash
Date: Sat, 20 Feb 1999 08:21:39 +0100
hello, i have some problems with tcpdump: i have connected a windows nt4.0
machine with a linux5.2 machine. when tcpdump receives a certain amount of
ipx-packets (generated by nt) it crashes with the message "segmentation
fault". does anybody know the reasons for this or can tell me what to use
instead?
thx, stef
------------------------------
From: [EMAIL PROTECTED] (Porphyrous)
Subject: Telnet mysteriously non-functional, refuses connections
Date: 21 Feb 1999 04:11:39 -0800
Hello all....
telnet is pretty much an aim and squirt service. So, I'm stuck on where to
go with this.
* I try to telnet.
* Says trying 192.168.1.1 (which is the right address).
* Says Connected to wesley.porphyrous.org (which is right name resolved)
* Says Escape character is '^]'
* Nothing else happens
* Within 10 seconds, says Connection closed by foreign host.
The behavior is the same regardless of whether or not I'm dialed out. I've
checked hosts.deny (ALL: ALL) and hosts.allow (ALL: LOCAL), hosts and
resolv.conf look okay. I'm a little mystified, because there isn't much
more to telnet than that, is there?
I'm running Red Hat 5.1, kernel 2.0.36.
--
porphyrous (por' fi Rus) adj. 1. Of or pertaining to the color purple.
David L. Vessell | Tualatin, Oregon | [EMAIL PROTECTED]
http://www.pobox.com/~porphyrous | http://www.pobox.com/~lpo
SUPPORT THE LIBERTARIAN PARTY OF OREGON
------------------------------
From: John Thompson <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.misc
Subject: Re: Having a SLIP connection terminate after no TCP/IP activity
Date: Sat, 20 Feb 1999 22:25:31 -0600
Fred Heitkamp wrote:
>
> I often have my PC downloading large files over a SLIP connection to my
> ISP. I was wondering if there is a utility to watch the TCP/IP activity
> and execute my SLIP stop script after the activity stops. I'm thinking
> along the lines of the dialer in OS Warp that has a Hangup after x
> minutes of no activity feature.
Do you need to use slip? There is a gpppkill utility that
can kill the ppp interface after a user-defined idle time.
It has a nice load monitor also...
--
-John ([EMAIL PROTECTED])
------------------------------
From: Ville Nummela <[EMAIL PROTECTED]>
Subject: Re: Autodial to Internet
Date: Sun, 21 Feb 1999 14:06:55 +0200
On Sun, 21 Feb 1999, SingaporeHater wrote:
> I have a small computer network linked up to each other on a small hub. Two
> are Win98 systems, and one is a Linux Box . I use Squid as a proxy to the
> internet for both computers, but i can't get it to autodial. every time i
> want to go on the net, i have to log on, connect, and log off. Is there any
> way to automate the connecting process?
Get yourself a copy of the diald package.
--
| ViGe / gasp inc. | http://www.lut.fi/~vnummela | [EMAIL PROTECTED] |
| IRC natura alienum est! Periculosum est! Delendum est! |
------------------------------
From: "Ricardo Canani" <[EMAIL PROTECTED]>
Subject: Re: Diald problem - dialing on its own
Date: Sun, 21 Feb 1999 10:42:52 -0300
Fly wrote in message <7aifd9$6hc$[EMAIL PROTECTED]>...
>I've got diald working but it seems to dial on its own after a few seconds
>of being on.
>A tcpdump trace shows that 192.168.0.1 is causing an ICMP message (ping?)
to
>an address. If I do an ifconfig, the sl0 has an address of 192.168.0.1.
>Why is sl0 doing this? This causes diald to connect with no traffic (other
>workstations powered off).
>
>The other workstations are three Win98 PCs.
>
>If I set a filter to ignore this ICMP message from 192.168.0.1, diald has a
>little trouble connecting when one of the Win98 PC's fires up its web
>browser. To do this I tell diald to ignore ICMP with a source IP of
>192.168.0.1.
>
>Any ideas?
>
I had a similar problema some months ago. Then I changed
/etc/diald.conf file:
# All ICMP packets are ignored for the purposes of bring the link up or
down.
ignore icmp any
If DNS is correctly configured in your network, diald shouldn't have
trouble
in connecting.
You can figure out what is causing your diald 'dial on its own' using
the option
'debug 9'. Debug information should be appended to your /var/log/messages or
/var/log/syslog file.
------------------------------
From: [EMAIL PROTECTED] (Jeremy D. Zawodny)
Subject: Re: Mount NSFT volume from Linux
Date: 21 Feb 1999 08:22:12 -0500
"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> writes:
> I know about Samba and have it working at my office. Can I connect
> the other way? IOW can I mount and write to an NTFS volume from my
> linux box (RH 5.2). I have Samba 1.9.18 installed.
With the 2.2.x Kernels, you can mount NTFS filesystems. It's still
considered "experimental" but it tends to work well from what I've
heard.
Jeremy
--
Jeremy D. Zawodny Web Geek, Perl Hacker, etc.
http://www.wcnet.org/~jzawodn/ [EMAIL PROTECTED]
LOAD "LINUX",8,1
------------------------------
Date: Sun, 21 Feb 1999 14:53:51 +0100
From: Leif Thuresson <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Can Linux do proxy arp ?
I have some 15 computers on a network with ~150 computers
I want to separate the 15 computers from the rest of the network
and I was planning on using a Linux based firewall with ipchains.
The problem is that the 15 computers are not on a separate subnet
so if I don't change there IP addresses I will have to add explicit
routes
to every one of them. I guess the best way would be to move them to
a private subnet, but that would require shutdown for reconfiguration
and I would like to avoid that i possible.
Then I came to think about proxy arp. Can Linux do that ?
Or is there a better way to handle this situation ?
--leif
[EMAIL PROTECTED]
------------------------------
From: "Billy Newport" <[EMAIL PROTECTED]>
Subject: CNet USA Pro120B Driver?
Date: Sun, 21 Feb 1999 13:28:18 +0100
Does anyone know if there is a driver for this 100Mb ethernet card?
------------------------------
From: [EMAIL PROTECTED] (Clifford Kite)
Subject: Re: ppp server problem
Date: 19 Feb 1999 22:29:31 -0600
Max Tulyev ([EMAIL PROTECTED]) wrote:
: Yeah. Proxy ARP is not a problem source. You may disable it at all. It
This looks to me like a LAN attached to the internet, not a private LAN
with NAT. Proxy arp *is* the problem in this case - unless the server
box is running gated or routed, or the default gateways of the rest of
the LAN point to the server.
--
Clifford Kite <[EMAIL PROTECTED]> Not a guru. (tm)
/* The signal-to-noise ratio is too low in many [news] groups to make
* them good candidates for archiving.
* --- Mike Moraes, Answers to FAQs about Usenet */
------------------------------
From: "*" <[EMAIL PROTECTED]>
Subject: network is unreachable
Date: Sun, 21 Feb 1999 17:03:43 +0100
Im trying to set up a network between my SUSE 6.0 box and a win 98 box. When
i�m trying to ping the win98 box it says: network is unreachable. I can�t
ping my self either.
Please help me .. im new to linux ...
------------------------------
From: Matt Kressel <[EMAIL PROTECTED]>
Subject: Re: ipfwadm + mail server
Date: Tue, 16 Feb 1999 18:18:35 GMT
Chris Cocozzo wrote:
>
> Hello all,
> I have a dedicted RH5.1 system that is running PPP to my ISP (static IP)
> and IPFWADM as the firewall. For now, I have the filtering rules set up
> as outlined in the HOWTO (changed addresses of course). I have another
> RH5.1 system running sendmail (8.8.7 I think). The two are connected
> via 10baseT as well as my 8 other winblows clients. I can ping, telnet
> internally and externally. I can connect with netscape mail program on
> the W9x clients and send/rec mail locally. I can send mail to the
> Internet but cannot receive. Have been told this has something to do
> with a need for port redirection. Could someone please enlighten me?
>
To receive mail from the Internet, just set your POP3 host as your
remote POP host. You will not receive mail locally unless you are a
registered MX (mail exchange) host for your domain. Since you are
dialing in PPP, then you will not be one. You should not need to mess
with port redirection for retrieving email from the Internet.
-Matt
--
Matthew O. Kressel | INTERNET: [EMAIL PROTECTED]
+--------- Northrop Grumman Corporation, Bethpage, NY ---------+
+--------- TEL: (516) 346-9101 FAX: (516) 346-9740 ------------+
------------------------------
From: Yan Seiner <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.ms-windows.nt.admin.networking,comp.os.linux.hardware,comp.sys.ibm.pc.hardware.video,comp.os.linux.misc,comp.os.ms-windows.nt.misc
Subject: Re: _Good_ (support 5+ systems) Monitor/Mouse/Keyboard switch for pc...
Date: Sat, 20 Feb 1999 06:48:25 -0500
Try cables to go (really). They have all kinds of switches, from the good ole
mechanical ones to software control.
On the web www.ctg.com (I think).
Yan
Man wrote:
> I currently have a two-computer vga/serial/kb switch that is made by PC
> Concepts that I purchased from Fry's Electronics for ~$35. Now, I am
> looking to add another computer and would still like to have control over
> all three boxen from my single monitor, mouse, and keyboard. Could anyone
> suggest a better one than the one I have now, possibly one that just just
> push a soft button instead of turning a large (0.5") switch for each
> computer...
>
> Thankx in advance to anyone who can help =)
>
> p.s. - I didn't know which NG was the exact one approprate to post to, so I
> posted to all the ones I thought could help, considering I use a Linux box
> and an NT box (workstation)...
------------------------------
From: "kok" <[EMAIL PROTECTED]>
Subject: Help Me!!!! Help!
Date: Mon, 22 Feb 1999 00:10:36 -0800
Help me!!! If somebody can answer this question for me?
given the different modes of communication-private lines, switched-lines,
leased lined, coaxial cable, fiber optics,microwave, and the satellite which
would be the most siutable for the following applications? why?
i) an u.s. marketing organization must transmit large amounts of product
information, sales data, fascimiles, and electronic mail to 40 cities. each
of the 40 locations has computers and sends volumes of sales data
fascimiles, and electronic mail. Response time is not critical.
Thank You,
------------------------------
From: "Carl R. Friend" <[EMAIL PROTECTED]>
Subject: Re: I give up with Linux and Win8 network
Date: Sun, 21 Feb 1999 11:05:41 -0500
Jose wrote:
>
> It's funny becuase I can ping the nic from my win98 machine. but I
> can't get out.. I'm really starting to go back to NT for my network..
OK. Here's the quick dope on masquerading.
1) Set the default gateway on all the machine on your "local" LAN
to point at the Linux box.
2) Set up IP masquerading on the Linux system. How this is done
depends on whether you're running 2.0.x or 2.2.x kernels.
For the sake of argument, let's say you use 192.168.64.0 for your
internal network.
For a 2.0 kernel you use "ipfwadm" like:
ipfwadm -F -a m -S 192.168.64.0/24 -D 0.0.0.0/0 -P all
For the 2.2 kernel, you use "ipchains" thusly:
ipchains -A forward -s 192.168.64.0/24 -d 0.0.0.0/0 -j MASQ
That should do it for you. Note that you'll probably want to set
your Linux box up as a firewall, especially as cable modems are active
24x7. Without some good security policies, you're likely to get
cracked into in short order.
Seriously consider denying the NetBIOS stuff from leaving your
local network. It can leak passwords.
--
______________________________________________________________________
| | |
| Carl Richard Friend (UNIX Sysadmin) | West Boylston |
| Minicomputer Collector / Enthusiast | Massachusetts, USA |
| mailto:[EMAIL PROTECTED] | |
| http://www.ultranet.com/~crfriend/museum | ICBM: N42:22 W71:47 |
|________________________________________________|_____________________|
------------------------------
From: Mark Evans <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.misc,comp.os.linux.questions,comp.os.linux.x,uk.comp.os.linux
Subject: Re: Multilink PPP in Linux with 2 x V90 = 105,333 bps?
Date: Sun, 21 Feb 1999 14:19:21 +0000
Jason Clifford <[EMAIL PROTECTED]> wrote:
> On Fri, 19 Feb 1999 [EMAIL PROTECTED] wrote:
>> Care to explain how... EQL is NOT ML-PPP and the ML-PPP driver for
>> linux only works in kernel 2.1.36-2.1.48 and was incompleate. do you
>> know something we don't?
> Going from the documentation in /usr/src/linux/drivers/net/README.eql that
> is what it is billed as although I note that the documentation is old and
The point is that the Windows 98 setting is supposedly MPPP rather than
EQL.
Also AFAIK the standard pppd does not understand any ML associated LCP,
though the code for this is in ipppd.
Anyway to be useful you would need the other end to support MPPP on
analogue lines too.
--
Mark Evans
St. Peter's CofE High School
Phone: +44 1392 204764 X109
Fax: +44 1392 204763
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: alt.os.linux,comp.os.linux.misc,comp.os.linux.setup
Subject: Re: Firewall with 1 IP
Date: Sun, 21 Feb 1999 15:44:13 GMT
> > - My ISP has asigned me 1 static IP.
> > - I have a LAN, and 3 NT Web servers on it that I want to make available to
> > Inet with 192.168.X.X IPs.
> >
> > - I want to put a Linux RedHat 5.2 based firewall before the LAN.
> >
> > Would it be possible with just 1 IP, maybe with IP Masquerading or
should I
> > ask for a Class C Network?
> >
> > -----------== Posted via Deja News, The Discussion Network ==----------
> > http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own
> >
> You don't need to ask for a Class C. You can do *nearly* everything you
> could possibly want with a masquerading Linux firewall, port forwarding,
> and proxies.
Ok, so what's the software I should apply then? What would you recommend?
Could I implement everything with just ipfwadm?
============= Posted via Deja News, The Discussion Network ============
http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own
------------------------------
From: Yan Seiner <[EMAIL PROTECTED]>
Subject: Re: Machine name themes - what do you use?
Date: Sat, 20 Feb 1999 07:45:56 -0500
A ccouple of rules:
No people names (too confusing to have bill@bob)
Unique names
Currently we use Shakespearean names (hample, horatio, etc) for machines
and artists for printers.
We did name our old server ophelia, but it kept crashing and finally
died. We gave up trying to name servers after heroines who kill
themselves, so our new server is portia, after the highly successful (but
cross-dressing) lawyer in merchant of venice....
Yan
Max Tulyev wrote:
> ���������, [EMAIL PROTECTED]!
>
> At 19 Feb 99 04:01:43, [EMAIL PROTECTED] wrote to All:
>
> h> Planet names. You can even find JPGs to use as a background (on
> h> NASA's
> h> web site)
> I use my FIDONet BBSes names for Linux boxes at work and home ;-)
>
> Bye!
> [Linux KEY #66318-***** http://counter.li.org] [Enigma] [Zonnery Must
> Die]
> [Information must be free!] [RMFO!!!] [Team ����� ����] [maxtul AKA
> �����]
> [email: maxtul AT microsoft.kiev.ua] [FNW^Team]
------------------------------
Subject: Re: Parsing TCPDUMP output
From: John Belew <[EMAIL PROTECTED]>
Date: 20 Feb 1999 06:24:49 -0800
Here are some refs I've collected, while searching for my dream
tcpdump tool. I don't actually use most of these, and in many cases
haven't even tried them, so don't know how useful this is:
========================================
Someone wrote sniffit "does a better job of capturing the data than
tcpdump", avail. at www.rootshell.com
========================================
see GnuSniff at http://www.gnome.org
========================================
tcpdump analysis scripts in perl;
by Cecile Martel at CERN.
but I looked 19980301 on the net, & couldn't find them.
========================================
tracelook, a TCL/CK shell for viewing "tcpdump -w filename" files.
I installed it (must execute from inside its directory)
but DIDN'T find it useful.
tcpview (MMOTIF-based)
Alternate-site: sunsite.unc.edu /pub/Linux/system/Network/management
Original-site: ftp.cac.washington.edu /pub/noc-tools/tcpview
installed in /usr/local/bin.
Shows 3-window view, but frustrating (windows aren't resizable).
has improved tcpdump which shows bytes in hexdump format
(meaning, including ASCII display).
========================================
tcpshow
I've got it, but it is "different" (not simply a linetap).
========================================
tcptrace
src @ http://jarok.cs.ohiou.edu/software/tcptrace/tcptrace.html
only shows info about traffic patterns, packet counts, etc.
(not a linetap-style protocol diagnostic tool)
========================================
EPAN is an offline protocol analyzer. It allows you to decode
any data captured by tools like edump(8) or tcpdump(8) in detail,
i.e. you'll see all the details of protocols like IP, TCP, UDP,
DNS or RIP (and about 20 other protocol decoders). It is also
possible to create a few statistics (frame size distribution,
utilization or protocol statistics). For more detailed statistics
EPAN offers to use an external program like gnuplot to evaluate
the collected data.
"With EPAN you can decode single frames in detail under X11
(much more detailed than tcpdump)."
EPAN runs under Linux/X11R6 (libc5 and libc6).
Linux Binaries and Debian Packages are available from
fbti.et-inf.fho-emden.de:/pub/epan
The sources will probably follow soon.
Detailed information about the protocol decoders and screenshots
are available at http://www.et-inf.fho-emden.de/~tobias/epan/
========================================
--
< John Belew >
------------------------------
From: "FERD" <[EMAIL PROTECTED]>
Crossposted-To:
vmsnet.networks.misc,microsoft.public.windowsnt.domain,comp.unix.solaris,comp.os.os2.networking.server,comp.os.ms-windows.nt.admin.networking,comp.infosystems.www.servers.unix,comp.protocols.tcp-ip.domains
Subject: Re: Machine name themes - what do you use?
Date: Sun, 21 Feb 1999 12:02:16 -0500
How come nobody uses saints?
:)
------------------------------
From: [EMAIL PROTECTED] (Clarence Wilkerson)
Crossposted-To: comp.os.linux.admin,comp.os.linux.help,comp.os.linux.setup
Subject: Re: printing to JetDirect problem
Date: 21 Feb 1999 14:42:44 GMT
Reply-To: [EMAIL PROTECTED]
New JetDirects come with built-in LPD spooler and you can
print to them like an ordinary remote printer host.
You still have to arrange for a bootpc or dhcpd server to
provide ip address, routing, etc when the jetdirect printer
first comes on. On some models you
can do this setup from the front LCD panel.
I've heard that the LPD spooler inside is not robust.( Or
you might have the older models without this feature.)
In this case you can talk directly to the printer
at port 9011 (??? from deep memory, might be off ) and handle
the spooling on a linux box. This also makes sense if you're
trying to provide quotas, access control, filters, etc.
I believe that LPRng provided some support for net printers.
--
Clarence Wilkerson \ HomePage: http://www.math.purdue.edu/~wilker
Prof. of Math. \ Internet: [EMAIL PROTECTED]
Dept. of Mathematics \ Messages: (765) 494-1903, FAX 494-0548
Purdue University, \
W. Lafayette, IN 47907-1395 \
------------------------------
From: "Bob Stickel" <[EMAIL PROTECTED]>
Subject: Configuring off network with 3c509
Date: Sat, 20 Feb 1999 09:01:22 -0500
I am setting up an RH5.1 box to be a web server. I have an identical box
already online with Apache, ftp, telnet, etc. at another location (miles
from here) and need to set this one up off the network but with all of the
hardware enabled.
I'd like to be able to attach it to the hub, login and go based on the setup
I have done while the box is off the network. Would it be better to do a
setup with this network connection/config or do an install without
networking and then finish the install after the box is physically attached
to its port?
I'm trying to save myself at least one additional 50 mile round trip....
Thanks
Bob
------------------------------
From: "Bob Stickel" <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.hardware,comp.os.linux.setup
Subject: Re: PCI modems in linux?
Date: Sat, 20 Feb 1999 09:26:34 -0500
I have purchased Aopen PCI 56k modems that are either PNP or manual jumper
settings but are not Winmodems...they're inexpensive and they work fine..
Bob
=====================
Eugene wrote in message ...
>AFAIK all PCI modems are winmodems
>
>Doug wrote in message <[EMAIL PROTECTED]>...
>>Can a PCI modem be used in linux? If so how? Something called a modem
>>enumerator is installed in windows along with the modem itself and i
>>dont know what that is. Its creative modmeblaster DI5630 v.90. Its
>>being used as PnP right now but there are jumpers on it I dont have the
>>manual so im trying to find out if com and irq can be hard set..
>>Thanks for any help and please email me a response if possible at
>>ratchet at tir dot com
>>Doug
>>
>
>
------------------------------
From: "Frank Sexton" <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.ms-windows.nt.admin.networking,comp.os.linux.hardware,comp.sys.ibm.pc.hardware.video,comp.os.linux.misc,comp.os.ms-windows.nt.misc
Subject: Re: _Good_ (support 5+ systems) Monitor/Mouse/Keyboard switch for pc...
Date: 20 Feb 1999 06:32:02 PST
Try http://www.raritan.com/
They specialize in these switches. But be warned... even a two machine
switch box including cables will cost about $700! I use 'em at work.
They're great.
-Frank
Man <[EMAIL PROTECTED]> wrote in message
news:01be5c9f$40870ae0$240b5e18@workstation...
>I currently have a two-computer vga/serial/kb switch that is made by PC
>Concepts that I purchased from Fry's Electronics for ~$35. Now, I am
>looking to add another computer and would still like to have control over
>all three boxen from my single monitor, mouse, and keyboard. Could anyone
>suggest a better one than the one I have now, possibly one that just just
>push a soft button instead of turning a large (0.5") switch for each
>computer...
>
>Thankx in advance to anyone who can help =)
>
>p.s. - I didn't know which NG was the exact one approprate to post to, so I
>posted to all the ones I thought could help, considering I use a Linux box
>and an NT box (workstation)...
>
------------------------------
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End of Linux-Networking Digest
******************************
