Linux-Networking Digest #154, Volume #12 Sun, 8 Aug 99 19:13:41 EDT
Contents:
getting ftape to work on Cal. 2.2 ("clint davis")
Re: 100Mbit Network is to slow! (Robert Bauer)
Re: need help for mail server ("eric")
Re: Hub problems? ("John Smith")
pppd and mtu negotiating? ("Tim Sharpe")
Re: Get my linux box set up like WinProxy (Wingate) (Roger)
Firewall-originated queries to @Home proxy? ([EMAIL PROTECTED])
Re: remote access as root? ("guru meditation")
Password probs (win98, printing) ([EMAIL PROTECTED])
Re: Will I ever be able to use Linux at all?? HELP! ("Nevyn")
Re: @Home Mail and News Server settings for Netscape (Louie)
Re: samba nmb services (WChan21438)
DHCPD problem? ("Manny Vellon")
Re: More Details FIXED IT!! ("Steve Meyer")
Re: new to Linux ("Gregory D. Horne")
Re: Ping 10baseT vs 100baseT (Job Eisses)
Linux serial port communication (Runs With Scissors)
Networking w/ notebook (myBid)
----------------------------------------------------------------------------
From: "clint davis" <[EMAIL PROTECTED]>
Subject: getting ftape to work on Cal. 2.2
Date: Sun, 8 Aug 1999 13:42:38 -0700
I am trying to it to work on Caldera 2.2.
I looked and noticed there are nodevices defined. Since
ftape was automatically built during install, I have no clue
what to define.
Clint
------------------------------
From: Robert Bauer <[EMAIL PROTECTED]>
Subject: Re: 100Mbit Network is to slow!
Date: Sun, 08 Aug 1999 16:32:37 -0400
Might sound goofy, but have you checked your cables and connectors? Although
my experiance here wasn't with a Linux box, maybe this might help...
I was at a client site that was running 10mb. We started upgrading their PCs
to 3Com 10/100mb cards. Added a 3Com SuperStack Switch with 10/100mb
auto-switching ports. Life appeared good after a couple PCs were upgraded, but
we started hitting 7 and more PCs and the network slowed down!
I pulled the switch out and the network was still slow. I found that users
could connect fine at 10mb and it might last the day, and sometime it might
not. I then figured to plug the users into the 100mb switch in an attempt to
let them run at 100mb (hey it would run faster then the 10mb right!?).
Actually, the PCs connected to the switch had problems finding the Novell
server and the network appeared slower then a 10mb connection! I then pulled
out 100ft of CAT 5 cable and directly plugged the PC into the switch - network
problem solved!
I had a cable contractor come out and take a browse and they found the jacks
didn't meet CAT 5 specs, although the cable does.
Do you have your PCs plugged into wall jacks? If so, are the jacks & wire
CAT 5 friendly? If you are plugged into the wall, you might want to pick up
some CAT 5 cable and run it directly between all the PCs (or at least a
couple).
It is completely possible that your cabling is just fine. I find my Linux RH
5.2 box causes packet collisions on my hubs during certain file transfers. The
collisions really slow the transfer down. You might want to observe your hub
when the network slows down... I believe if I specify a smaller packet size I
can reduce the collisions although I haven't figured out how to do it and I
don't transfer monster files off the Linux box too much. (If some one knows
how to do this let me know.)
These are just ideas... hope they get you started in the right direction...
Rob
[EMAIL PROTECTED]
http://junior.apk.net/~rsbauer
Zorlu Yusuf wrote:
> Hi there,
>
> i have a SuSe Linux Server with PentiumII/400 (128MBRam, 2xSCSI HD,
> 1xSCSI-CD, 1xSCSI-CD-RW + Realtek 8139 Fast Ethernet Network card) attached
> on 3COM SuperStack II Dual Speed Hub 500.
>
> Now, if only one user is working, the speed of the net is acceptable. If
> more than 2 users are working with Programmes, the speed of the net goes
> down (i think to 10Mbit or slower). The programmes, I'am working with are
> Programmes under WindowsNT + working with Borland Data Base Engine!!!
>
> On all workstations is WindowsNT 4/Sp4 installed and they have 10/100Mbit
> Network cards installed.
>
> Is there someone, who can tell me, how i can speed up my network!
>
> thanks.
------------------------------
From: "eric" <[EMAIL PROTECTED]>
Subject: Re: need help for mail server
Date: Sun, 8 Aug 1999 14:16:08 -0700
You may also consider qmail. I use qmail. It's easy to configure. Fast and
secure, too.
www.qmail.org
Eric
[EMAIL PROTECTED]
leo <[EMAIL PROTECTED]> wrote in message
news:01bee1db$d0018300$[EMAIL PROTECTED]...
> hi, everyone;
> I have a Slakware Linux 2.2.6, I want to setup it as a Mail
> server, which software i should use? smail or sendmail? do i need a POP3
> for that?
> Thanks
>
> Leo
> [EMAIL PROTECTED]
------------------------------
From: "John Smith" <[EMAIL PROTECTED]>
Subject: Re: Hub problems?
Date: Sun, 8 Aug 1999 16:50:19 -0400
I know that sometimes with a mac, you can only ping them from a pc if you
are active in tcp on the mac....i.e. accesing a webpge on the mac. If your
cable modem is on the mac, try downloading a file on it and ping from the pc
then.
Hope this helps
Peter Duijnstee wrote in message <7okou4$3dh$[EMAIL PROTECTED]>...
>Hi all.
>
>Yesterday I got myself a small 3com hub (Officeconnect TP4) to connect
>my PC to an Apple mac because I want to be able to exchange files and
>share my cable modem between the two. Both have working NICs and
>the connection to the hub seems ok. The line led goes on and when I try to
>ping or do anything the network activity led flashes, but there's one small
>problem: the packets I send from either never reach the other computer.
>(I tried running tcpdump under Linux and saw nothing come in) It's an IP
>network btw, and I've given my PC the address 192.168.0.1 and the Mac
>192.168.0.2, both with 255.255.255.0 for a netmask. I'm pretty new to this
>networking stuff so I am probably doing something wrong, but what? Does
>this sound familliar to anyone?
>
>Thanks in advance.
> Peter Duijnstee
>
>
>
------------------------------
From: "Tim Sharpe" <[EMAIL PROTECTED]>
Subject: pppd and mtu negotiating?
Date: Sun, 8 Aug 1999 16:59:16 -0400
I'm running Redhat 6.0 and using pppd to connect to my Internet Service
Provider. When connected, an ifconfig command reveals that my Maximum
Transmit Unit (MTU) is 576, a common value I'm told for the Internet.
However, I need this to be 1500 to solve a bug in Linux 2.2.5 masquerading.
I've tried editing the /etc/ppp/options file and inserting MTU 1500 and MRU
1500, but this does not seem to work. Is my Internet Service Provider
limiting me to an MTU of 576 through some sort of negotiating process with
the pppd program?
A big, sloppy kiss for anyone who can help me!
Thanks in advance,
Tim
------------------------------
From: Roger <[EMAIL PROTECTED]>
Subject: Re: Get my linux box set up like WinProxy (Wingate)
Date: Sun, 08 Aug 1999 16:08:09 -0500
Carlos Carbajal wrote:
> I'm sure this has been asked a dozen times, but I can't find the specifc
> answer I'm looking for so here goes:
Hmmm try this for help
http://rlz.ne.mediaone.net/linux/faq/
------------------------------
From: [EMAIL PROTECTED]
Subject: Firewall-originated queries to @Home proxy?
Date: Sun, 08 Aug 1999 21:09:54 GMT
G'day!
I have a RedHat 5.2 system with 2.2.10 kernel and dhcpcd 1.3.9
running an ipchains-based firewall. It's working just great
but after reading a few posts about some trouble people had with
causing network storms on their @Home subnet, I wanted to be sure
my firewall was well-behaved.
Well, after running tcpdump I noted some requests that my machine
seems to be making to the @Home proxy server even when my internal
network was idle.
Can anyone give me a hint as to what process could be originating
these queries to the proxy server? I just don't know if they are
normal or not. They come in pairs about one every five seconds or
so on the average. Here's a tcpdump -vv output from the interface
connected to my cable modem:
[ note: my machine address replaced with "MY_FW" ]
[ the @home proxy being talked to replaced with "HM_PROXY" ]
[ - done primarily for brevity ]
[ also, a bunch of "arp who-has" packets are not shown ]
[root@MY_FW /root]# tcpdump -v
tcpdump: listening on eth0
13:32:21 MY_FW.1054 > HM_PROXY: 3989+ (45) (ttl 64, id 56055)
13:32:21 HM_PROXY > MY_FW.1054: 3989 q: 193.19.176.20 1/4/4 (294) (ttl
57, id 45580)
13:32:21 MY_FW.1054 > HM_PROXY: 3990+ (41) (ttl 64, id 56056)
13:32:21 HM_PROXY > MY_FW.1054: 3990 q: 1.200.5.24.in 1/2/2 (175) (ttl
57, id 45583)
13:32:21 MY_FW.1054 > HM_PROXY: 3991+ (40) (ttl 64, id 56057)
13:32:21 HM_PROXY > MY_FW.1054: 3991 q: 12.4.1.24.in- 1/2/2 (176) (ttl
57, id 45588)
13:32:21 MY_FW.1054 > HM_PROXY: 3992+ (43) (ttl 64, id 56058)
13:32:21 HM_PROXY > MY_FW.1054: 3992 q: 137.200.5.24. 1/2/2 (184) (ttl
57, id 45590)
Thanks for any clues you can provide.
Regards,
- Leo Butler
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
------------------------------
From: "guru meditation" <[EMAIL PROTECTED]>
Subject: Re: remote access as root?
Date: Sun, 8 Aug 1999 16:23:35 -0500
I would disable the telnet login all togethre. Since it is not encrypted,
anyone with a packet sniffer can catch your user name and password. This is
especiallt dangerious if you have a cable modem. It is very easy to set up
a sniffer to capture the first few packets of a telnet session....the
packets that contain your username and pasword....I've tried it..it works.
be careful.
------------------------------
From: [EMAIL PROTECTED]
Subject: Password probs (win98, printing)
Date: Sun, 08 Aug 1999 21:16:49 GMT
Hi!
I�ve a working Samba 2.0.3 and Win98 config for many weeks. I changed
nothing on my Linux-box on samba-config, I don�t know what automaticly
changed on windows network registry stuff.
First at all I got a request for a password and my correct password
won�t accept. Just for fun I changed the pw with smbpasswd and voila I
come in. But now I must type in the pw every time log in - no auto login
as before. After two weeks (yesterday) I can�t print over network. I
searched and found - the password is not correct - but I had not changed
it! After many experiments and currently the same config as every time,
I can log in (with a new pw) on my linux-box, but for printing the pw is
not accepted, I can�t add LPT1 to \\Pit\raw.
Because I nothing changed at linux, so I think it�s at windows? Where
should I look in registry and c:\windows\ ?
--
--
bye, Wolfi
Wolfgang Kueting / Viehstr. 15 / D-59590 Geseke /
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
------------------------------
From: "Nevyn" <[EMAIL PROTECTED]>
Subject: Re: Will I ever be able to use Linux at all?? HELP!
Date: Sun, 8 Aug 1999 22:23:52 +0100
#Ugh.. I've never used suse before.. but I have tried KPPP and never once
has it worked for me. I usually just use the red-hat control panel (which
I know you won't have) but linuxconf may have the item you want.. sorry I
can't be of too much help in your particular distribution.. also you might
try using the command-line version of ppp.. all I can say is that I don't
personally know anyone who has made KPPP work correctly.#
lol...i've never got anythink BUT kppp to connect to the internet for me
from linux, but i do have one intresting irritation, resolv.conf keeps
dissapearing, i sometimes have to su o root and rewrite it, ok its only a 4
line file but it gets annoying, any ideas y?
------------------------------
From: Louie <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Crossposted-To: alt.os.linux.caldera,comp.os.linux.setup
Subject: Re: @Home Mail and News Server settings for Netscape
Date: Sun, 08 Aug 1999 21:54:09 GMT
An easier method is simply to use the correct IP addresses instead of
"mail" and "news" in the server entries.
Louie
Mike wrote:
> I saw some messages of those having problems with these settings. And
> I figured it out. Lucky I guess.
>
> Hope it helps.
>
> Open Netscape - Edit - Preferences
> Under Catagory
> Under
> ---Identity
> Your Name: whatever your want your handle to be
> Email address: 'username '@ 'domain name' .'com'
> Reply-to-address: I left blank
> Organization: @Home Network
> Signature File: not necessary
> Note: username is the name chosen by you or assigned by @Home; drop
> single qoutes
>
> ---Mail Server::
> Incoming Mail Server: mail
> Note: default is POP .
> !!!!!Select pop with pointer,activate 'edit' button. When window
> widget for POP comes up type at
> -Server Name: mail
> -Server Type: leave POP
> -User Name: username
> .....close widget. !!!!
> Outgoing Mail Server:
> Outgoing mail (SMTP) server: 'mail'
> Outgoing mail server user name: 'username'
> The rest is up to you.
>
> ---Newsgroups Servers news (default)
>
> The rest is up to you Most of the other stuff I left as default. And
> it works!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
------------------------------
From: [EMAIL PROTECTED] (WChan21438)
Subject: Re: samba nmb services
Date: 08 Aug 1999 21:53:25 GMT
Thanks all,
The problem is corrected by changing settings in the smb.conf file.
------------------------------
From: "Manny Vellon" <[EMAIL PROTECTED]>
Subject: DHCPD problem?
Date: Sun, 8 Aug 1999 14:58:48 -0700
I have my linux box connected to my ADSL modem (w/eth0), using DHCPD to
lease/renew IP addresses from my ISP. I then have a second net card (eth1)
connected to a hub on my internal home network. I use IP masquerading to
isolate my home machines from the Internet.
Everything seems to work fine for a couple of weeks or so. At that point,
the Linux box seems to lose its eth0 IP address (ifconfig reports 0.0.0.0 as
the eth0 ip address). "ps a" reports that dhcpd is still running.
Now, losing the IP address is not that weird - I know that occasionally my
ISP freaks out. However, after a few hours of waiting for the problem to fix
itself, I inevitably get tired and end up rebooting the Linux system.
Shortly after that, everything's working fine again. This leads me to
suspect DHCPD and to think that the daemon is failing to renew the IP
address.
The other thing that happens is that I'm unable to telnet or ping the Linux
box (from my internal net, via eth1). It's almost as if networking is
totally broken on the Linux box at that point.
Any ideas?
Thanks
------------------------------
From: "Steve Meyer" <[EMAIL PROTECTED]>
Subject: Re: More Details FIXED IT!!
Date: Sun, 8 Aug 1999 18:02:41 -0400
This put me to the right track-- you were right in that it must have been
related to the 3c509 options I attempted to set. When I removed the options
from linuxconfig it left a line in the /etc/conf.modules that said only
"options 3c509" with nothing else (presumably this would have been where
the i/o & irq settings were). When I deleted this line I was able to
restart the eth0 interface with ifup.
THANK YOU!!!! I had my spare nic on the desk thinking I'd try that before
reinstalling Linux. You saved me a ton of needless work. I respect your
opinion of linuxconf, looks like it doesn't clean up after itself very well
in some cases. I'm a believer.
Steve
------------------------------
From: "Gregory D. Horne" <[EMAIL PROTECTED]>
Subject: Re: new to Linux
Date: Sun, 08 Aug 1999 18:34:19 -0400
John Hill wrote:
> I have set up Linux on an IP network
>
> address is 120.1.1.2
> netmask is 255.0.0.0
>
> when I ping another machine on the network, the light on the hub flashes so
> I guess the card/drivers are working, but there is no return. What route do
> I need to put in ?
All computer on the same network segment MUST have the same subnet mask
(netmask).
------------------------------
From: Job Eisses <[EMAIL PROTECTED]>
Subject: Re: Ping 10baseT vs 100baseT
Date: Mon, 09 Aug 1999 00:06:26 +0200
Reply-To: [EMAIL PROTECTED]
Mike Redrobe wrote:
>
> John Mai wrote in article <[EMAIL PROTECTED]>,:
> >Hello,
>
> >How do I write a simple C or shell program to measure the speed of the
> >10baseT vs 100baseT
> >using ping program.?
>
> ping will tell you the response speed, which is similar for 10 and 100baseT.
Ping can do a bit more, by using the count (-c) and size (-s) parameters.
Two runs of a few pings with size 64 and size 1064 give a difference of 2.5
msec
in my 10Mbps net. -job
------------------------------
Date: Sun, 08 Aug 1999 14:08:53 -0800
From: Runs With Scissors <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Linux serial port communication
In my work, I often need to connect a PC to a PBX or other device that has a
serial port.
I've been doing this by using ProComm Plus running under DOS or Windows. That
has always worked well for me, because PC+ is very flexible and allows me to set
different baud rates, stop bits, terminal emulations, key bindings, and so on
for each entry in the dialing directory. Sometimes, I use the modem port, but
more often use the serial port and a cable to connect directly between the two
machines.
I have not yet found out how to do this same function while using Linux. Minicom
comes pretty close, but doesn't have near enough choices for terminal emulations
and key bindings.
The HOWTO's for serial ports and text terminals seem to be assuming that I want
to connect a terminal to my Linux box to log into Linux from the terminal. What
I want is the rverse of that function, where I'll be able to set my Linux xterm
window to use whatever terminal emulation will work with the remote machine.
Can anyone point me in the right direction for info on how to do this, or what
programs to use for this?
Thanks for any help you might provide.
-BA
--
________ Bill Arnold, communications technologist
/_------_\ [EMAIL PROTECTED]
/ -- \ Upgrade your legacy NT computers to Linux,
|______| while we work to upgrade the telephone network to an Open System.
------------------------------
From: myBid <[EMAIL PROTECTED]>
Subject: Networking w/ notebook
Date: Sun, 8 Aug 1999 17:39:44 -0500
Hello,
I'm running RedHat 6.0 on a laptop and would like to have the flexibility
of plugging into different ethernet ports (using different IP address, of
course). Now, when I configured the laptop, I configured it using a
static IP address (it wouldn't accept the bootp, etc options), and I'm not
able to re-configure it to work off of another IP address.
I've tried using the Control Panel->Networking applet to re-configure the
system to another IP address, gateway, etc. I've also modified, manually,
/etc/hosts ; /etc/sysconfig/network ; and
/etc/sysconfig/network-scripts/ifcfg-eth0 with a reboot. When I try
re-configuring the files, at rebooting gets stuck on the initiation of
sendmail (until I pop out the ethernet PCMCIA card and hit <ctrl>-c).
Any suggestions on how I can configure the machine "dynamically"? Thanks
much!
-Yiing Lin
------------------------------
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End of Linux-Networking Digest
******************************
