Linux-Networking Digest #700, Volume #10 Thu, 1 Apr 99 06:13:40 EST
Contents:
Re: IP_allow help ([EMAIL PROTECTED])
Re: NT provider - new to Linux (Kristinn R. Kristinsson)
IP MASQ Problem HELP!!! (Jason)
Re: Network Monitoring ([EMAIL PROTECTED])
modem problem (Felix Lam)
Re: Machine name themes - what do you use? (Tony Wright)
Re: NT provider - new to Linux (Richard Steiner)
Re: using DNS server(named) and external dns server. ([EMAIL PROTECTED])
[Fwd: Windows 95/98 -> to linux Samba; diald problems] (Ronald Hovens)
Using Standard Ethernet V2 and IEEE 802.3 simultaneously (Wouter Liefting)
----------------------------------------------------------------------------
From: [EMAIL PROTECTED]
Subject: Re: IP_allow help
Date: Thu, 01 Apr 1999 08:29:55 GMT
In article <[EMAIL PROTECTED]>,
"Mark Long" <[EMAIL PROTECTED]> wrote:
> Hi All
>
> I'm using RedHat 5.2 as a mail server. I need the machine to accept (for
> relay) mail from just about anyone. Any ideas? is there something I can
> put in the IP_allow file to do this?
>
> Thanks in advance!
> -Mark
Here's my step-by-step...
http://linux.sparta.com/security/sendmail.html
Enjoy,
Bruce.
Bruce Benson, Senior Engineer,
SPARTA (CPD)
7926 Jones Branch Drive, Suite 900
McLean, VA 22102-3365
USA
+01 703-448-0210 x211
[EMAIL PROTECTED]
http://linux.sparta.com
keywords: email client error 551 relaying relay denied. we do not relay.
relay not allowed. sendmail configuration. /etc/mail/relay_allow
/etc/sendmail.cf
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------------------------------
From: Kristinn R. Kristinsson <[EMAIL PROTECTED]>
Subject: Re: NT provider - new to Linux
Date: Tue, 30 Mar 1999 22:55:44 GMT
In article <dCaM2.5$lt1.1650@insync>,
"Lee Sharp" <[EMAIL PROTECTED]> wrote:
> Mike Kokinda wrote in message <7dqoh8$clc$[EMAIL PROTECTED]>...
>
> |I am an NT webhost just starting to add Linux servers to our network..
> |Looking for opinions on whose version to run.
>
> Project Independence www.independnence.seul.org has a nice install, a
> mature GUI, and nice GUI tools. It is based on Red Hat 5.2, and will have a
> final release soon after Red Hat releases 6.0. It is still very nice now,
> however.
>
> Lee
>
> --
> SCSI is *NOT* magic. There are *fundamental technical reasons* why it is
> necessary to sacrifice a young goat to your SCSI chain now and then. *
> Black holes are where God divided by zero. - I am speaking as an individual,
> not as a representative of any company, organization or other entity. I am
> solely responsible for my words.
>
>
Independence? Never heard of them! And not even being released makes it
something I wouldn't put on a workstation with an itchy reset-finger, let
alone a server. Them being based on RedHat is not my idea of a good
recommendation. GUI tools and mature GUI ,, and a nice install is definately
NOT something one should look at when looking at adding servers to a network.
Debian does that job well. Sure, the install maybe a bit more difficult and
may take a little while longer than RedHat, but in return you get a kickass
server. Why Debian over RedHat? - Just compare the RedHat errata to its
counterpart at Debian. Only a handfull of vulnerable things at Debian as
opposed to such a number of vulnerabilities that it would make Microsoft
ashamed. - Upgrading? Debian beats RedHat hands-down. Upgrading from Debian
2.0 to Debian 2.1 is just a matter of two commands (short ones -- is there
anything apt can't do?=). And you don't even have to reboot! AFAIK this is
not the case for RedHat. - Stable? Debian 3, RedHat 0. The Debian team
doesn't release anything unless they're 100% sure it works, and works well.
RedHat releases when it thinks its MARKET is ready. This makes all packages
more stable than .. uh.. something really, really stable.
So, uhm.. Debian would be my pick.
"We want to take over the world but we don't have to do
it by tomorrow - its OK to do it by next week, or even next month "
--- Linus Torvalds
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From: Jason <[EMAIL PROTECTED]>
Subject: IP MASQ Problem HELP!!!
Date: Thu, 01 Apr 1999 05:37:44 GMT
I have a cable modem running on Linux Redhat kernel 2.2.2. ipchains
1.3.8.
I has worked in the past with this kernel for a few months until I
upgraded to a PII 450.
Everything works fine but MASQ kills my route after a few minutes.
I have had IP Masq running before but I can't figure out what is wrong.
I have a 2 netgear 10/100 cards:
one eth0: 192.168.109.1 private
two eth1: 24.95.99.185 internet
I have setup everything that needs to be done to the kernel. I think is
my be
the routing or ipchains?
I can use the linux box without a problem to the web but when I try to
use the
other boxes on the network.
via eth0 I lose my default route. But the other boxes work for a few
minutes.
here are the routes normal:
romos * 255.255.255.255 UH 0 0 0
eth0
localhost * 255.255.255.255 UH 0 0 0
lo
192.168.109.0 * 255.255.255.0 U 0 0 0
eth0
24.95.99.0 * 255.255.255.0 U 0 0 0
eth1
default dt131n01.midsou 0.0.0.0 UG 0 0 0
eth1
then I try to access the web with 192.168.109.2 box. It works but then
stops!!
routes then go to this and hang:
Destination Gateway Genmask Flags Metric Ref Use
Iface
romos * 255.255.255.255 UH 0 0 0
eth0
localhost * 255.255.255.255 UH 0 0 0
lo
192.168.109.0 romos 255.255.255.0 UG 0 0 0
eth0
192.168.109.0 * 255.255.255.0 U 0 0 0
eth0
This is what is in route cache:
route -C
Kernel IP routing cache
Source Destination Gateway Flags Metric Ref Use
Iface
home romos romos l 0 0 0
lo
This is what I am using for the ipchains:
ipchains -P forward DENY
ipchains -A forward -s 192.168.109.2/32 -j MASQ
ipchains -A forward -s 192.168.109.3/32 -j MASQ
and ip_forwarding is on:
[root@www rc.d]# more /proc/sys/net/ipv4/ip_forward
1
I have come to the end I have know clue what it is I have even
reinstalled and
tried the old 2.036 kernel....
I think I have missed something in the ipchains or routing.
thanks,
Jason
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: Network Monitoring
Date: Thu, 01 Apr 1999 10:03:00 GMT
In article <[EMAIL PROTECTED]>,
Stephen Carville <[EMAIL PROTECTED]> wrote:
> I have a boss who is convinced that his internet access at work is too
> slow. He claims that our dual T1's are slower than his 56K dial up from
> home. I've checked out the network and watched his machine and, frankly, I
> think he's full of crap. However, I need some to way to prove that the
> "delays" he is experiencing are not due to any problem in the LAN or our
> part of the WAN.
While I empathize with your problem of dealing with the generally clueless,
there is the possibility that your boss is correct.
It's important to remember that connection "speed" is really a misnomer --
56K is *actually* a measure of the _width_ of the connection (if you think of
them as pipes). If your average bandwidth consumption is less than 56K
(which it almost always is), then a T1 really isn't going to be any faster --
and, depending upon differences in peering relationships between your bosses'
ISP for his dialup and the provider of your office's T1, it is very possible
for there to be more router hops for your boss to connect to his favorite
sites from the office than from home. This will almost certainly be true if
he is connecting to a nation-wide service (like AOL or Worldnet), and I'd be
willing to put money on his home connection being faster for typical web
surfing if his home ISP uses caching web proxies and your office does not.
On the other hand, it's a simple matter to prove to him that the office T1 is
"faster" in a very observable sense -- simply go to a site that has streaming
video (the higher quality feed the better). That will push the bandwidth
usage up past the 56K barrier and cause the home connection to stall, while
the T1 will obviously have no problems.
> Is there any tool or combination of network tools that I can use to
> estimate what part of the transfer time is on the LAN, what part is on the
> WAN and what is on the server end?
There's a FreeBSD port called "bing" I use for similar purposes (it estimates
bandwidth over certain hops along a traceroute path). I don't know offhand if
there's a Linux equivalent (under the same name or different), but you can
download the source from http://www.freebsd.org/pub/FreeBSD/distfiles/bingXXX
and compile it (I've never had a problem cross-compiling small ports like this
one).
-Bill Clark
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------------------------------
From: Felix Lam <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.portable,comp.os.linux.questions,comp.os.linux.misc,comp.os.linux.help,comp.os.linux.setup
Subject: modem problem
Date: Wed, 31 Mar 1999 10:28:06 +1000
hi all,
Got RH5.2 working OK on my Sony VAIO 505 laptop, although I have
a slight problem with the internal problem (V.90+K56flex).
It dials and connect to my ISP via ppp but when I bring up
netscape 4.08 and start browsing, it always stops half way downloading
a page with, e.g. something like "20% of 20K (stalled)" then nothing
would show up on the browser even I reload ...
Just wondering if it has anything to do with the init string. Any
help/advice
would be grateful or if anyone with a similar setup could show me how I
should
put the init string in for the modem.
Thanks in advance,
--
==================================================
Felix Lam 280 Botany Road
Network Management Alexandria 2015
Network Services Division Tel: +61 2 9690 5928
Alcatel Australia Fax: +61 2 9690 5225
==================================================
------------------------------
Date: Thu, 01 Apr 1999 10:33:38 +0000
From: Tony Wright <[EMAIL PROTECTED]>
Crossposted-To:
vmsnet.networks.misc,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?
> (right now I need the name of an
> >English/Celtic witch or 'being' associated with illusions - for a Video
> >Presentation server).
>
Vaguely.......Look up Dues'sa , a witch in Spencer's Faerie Queene and
see if it fits...
> I use the mythology bent too. But I'm starting to run out of names.
> I've got about thirty servers, and I've used every Greek/Roman name I
> can think of, and even a few Egyptian ones. Anyone have any obscure
> ones they can contribute?
>
How obscure depends on your literary scope/readings - I think I can
manage about 30 Greek/Roman without touching the Egyptians.... from
memory...
"Achates" faithfull companion of "Aenas" (Trojan Warrior and alledged
son of "Anchises" and Venus) in Virgil's Aeneid.
"Aeolus" - God of the Winds - (popular with Greek and Roman curry
eaters apparently)
"Aesculapius" - God of medicine (to whom I'll need to make sacrificial
offerings if I continue this theme much longer...)
"Arachne" - ( phobia for those that don't like spiders) - a maiden who
having surpassed Minerva in weaving got changed into guess what? (good
one for a Web server if you havn't used it already...)
......
"Boreas" - North Wind
.....
"Cimmerians" - a people fabled by Homer to live in a land of darkness
(now why do I immediately think of all M$ users?)
"Corydon" - the name of the shepherd in poems of Theocritus & Virgil:
Hence generic name for shepherd or rustic in general.
......
"Erebus" - a gloomy region under the earth (if your other basement
servers are called Styges,Hades etc)
......
"Horae" - Maidens that personify the changing of the seasons - usefull
for a "timesource" server as the English translation is The Hours....
....
"Pelops" - in Greek myth, son of Tantulus, killed and served as food to
the gods by his father to test their divine powers.Restored to life and
given an ivory shoulder to replace the one eaten by Ceres(no wonder the
Roman goddess of corn went vegetarian!).His other son was Atreus(father
of Agamemnon & Menelaus - hence called the Atridae)
"Penthesilea" - in Homer & Virgil - a queen of the Amazons
"Polyphemus" - a Cyclops from Homer's Odyssey, who killed Acis for
having the hots for Galatea the nymph... (or it might have been the
other way round?)
....
"Scylla" (also a hideous monster) the rock in the Strait of Messina
which together with the adjacent whirlpool "Charybdis" presented a
constant danger to mariners as in avoiding one they were liable to
encounter the other (thus NT pdc & bdc's immediately come to mind)
"Sisyphus" - condemned to roll a great stone up a hill in Hades.When it
got to the top it rolled down again. (this pointless frustrating
exercise has just got to be an obvious choice for a NT server....)
...
"Telemachus" - Son of Ulysses
"Themis" - Greek goddess of justice (that explains a lot if its a
woman!)
"Thersites" - the ugliest and most scurrilious of the Greeks in the
Trojan War
"Thyestes" - son of Pelops and brother of Atreus, ate his son by
accident when his bro' offered him a bacon butty one morning....
"Tiresias" - a blind soothsayer of Greek fable...
"Tisiphone" - one of the three Furies(so I assume you have the others as
well cos I've forgotten em?)Conversely called the Eumenides(Kindly Ones)
or Erinnyes(Terrible Ones)...
"Tithonus" - a young man with whom Aurora(if you're running the server)
was enamoured.Made immortal by Jupiter, but not endowed with perpetual
youth so withered away and was changed into a cicada.... ahhh shame....
"Vertumnus" - Roman god of crops and orchards(or was that orgies - I
can't remember<g>)
"Vulcanus" - Roman god of fire and working of metals (presumably Gene
Roddenderry must also have read the classics at some time to come up
with Spock as Vulcan is the alternate derivation). If therefore you've
used this one try the Greek equivalent "Hephaestus"..(err...at least I
think it's the equivalent....).
"Zephyrus" a personification of the West wind......
I'll leave it as an exercise for someone else to fill in the several
hundred I've ommitted or forgotten over the years....in meantime there
might be a few above you havn't used yet...
and no doubt some other classics scholar will correct any errors I've
made...
--
Rgds Tony W Email: [EMAIL PROTECTED]
"humanum est errare: To err is human
.... and to fail is to be a Project Manager...
...but to foul things up completely needs a computer!"
------------------------------
From: [EMAIL PROTECTED] (Richard Steiner)
Subject: Re: NT provider - new to Linux
Reply-To: [EMAIL PROTECTED]
Date: Thu, 01 Apr 1999 03:32:41 -0600
Here in comp.os.linux.networking, "Mike Kokinda" <[EMAIL PROTECTED]>
spake unto us, saying:
>I am an NT webhost just starting to add Linux servers to our network..
>Looking for opinions on whose version to run.
That isn't a lot of information to go on. What are your requirements?
--
-Rich Steiner >>>---> [EMAIL PROTECTED] >>>---> Bloomington, MN
OS/2 + Linux (Slackware+RedHat+SuSE) + FreeBSD + Solaris + BeOS +
WinNT4 + Win95 + PC/GEOS + MacOS + Executor = PC Hobbyist Heaven!
I'm not as think as you stoned I am.
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: using DNS server(named) and external dns server.
Date: Thu, 01 Apr 1999 10:13:43 GMT
In article <7dspvd$shg$[EMAIL PROTECTED]>,
"Robin Imrie" <[EMAIL PROTECTED]> wrote:
> My local DNS server can't do a forward as it doen't has access to the
> network, but it could if I knew how to set it up so that it used the poxy
> server, another issue I guess.
You have a DNS server that's not connected to the network.... no... stop...
you're making my head hurt....
What possible function could such a machine serve? It obviously can't be
handling external requests, and since it's not capable of answering queries
for anything not in it's local zone files, you'd really be better off
sticking that information into an /etc/hosts file.
-Bill Clark
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------------------------------
From: Ronald Hovens <[EMAIL PROTECTED]>
Subject: [Fwd: Windows 95/98 -> to linux Samba; diald problems]
Date: Thu, 01 Apr 1999 11:46:30 +0200
Ronald Hovens wrote:
> Brian,
>
> I read your question about diald and win'98 today. I don't have an answer to
> your problem, butmaybe you can help me in setting up a similar
> infrastructure; I myself tried to configure my linux server and win'98
> clients for use with diald but sofar I didn't succeed.
>
> Can you send me some help, specifically I am interested in your following
> files:
>
> /etc/ppp/options
> diald.conf
>
> Furthermore I am interested in the command you use to start the diald daemon
> (which commandline options do you use). Many thanks in advance, your help
> will save me a lot of time and headaches!
>
> Ronald Hovens
>
> Scott Harvey wrote:
>
> > Hello,
> > I have a network with two windows 95 computers connected to a Linux
> > server. The Linux server has ipfwadm and diad running.
> >
> > I am having trouble with my windows work group bringing up the dial on
> > demand demon (diald). What is happening, is that, every 15 minuets or so
> > a request goes out to the ( named ) name server to resolve the name of
> > my workgroup and that request fires up diald to call my ISP. Is there a
> > way to filter this request out in standard.filter of diald or have a
> > rule defined using ipfwadm to squash this request.
> >
> > Thanks in advance
> >
> > Scott Harvey
------------------------------
Date: Thu, 01 Apr 1999 12:20:35 +0200
From: Wouter Liefting <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: Using Standard Ethernet V2 and IEEE 802.3 simultaneously
Couldn't find anything in the documentation.
As you know, there are two variations of ethernet around, Ethernet V2
(the original Xerox standard) and IEEE 802.3 (the IEEE variant).
I need to use them both, simultaneously on the same wire from a Linux
box, so that they form a different subnet. For instance, 10.0.1.0/24 is
standard ethernet, and 10.0.2.0/24 is IEEE.
Any suggestions on how to do that? I use Red Hat 5.2 with the default
kernel (2.0.36 or so) but don't mind upgrading/experimenting etc.
I know on AIX this is not a problem: en0 is standard ethernet and et0 is
IEEE ethernet, both are interfaces to the one and only ent0 device.
Regards, Wouter.
------------------------------
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