Linux-Misc Digest #681, Volume #24 Fri, 2 Jun 00 04:13:02 EDT
Contents:
Re: Need recommendation for linux-based e-mail server. (Timothy J. Lee)
Question About Embedded Linux (Chic Wack)
Where is /usr/include/bsd (lanbaba)
Re: Need ideas for university funded project for linux ([EMAIL PROTECTED])
Re: Sun Sparc faster then intel pentium: (What about the compiler?) (Steven Yap)
Re: HowTo Change Screen ("Jackie")
Re: Sun Sparc faster then intel pentium: is this true???? (Sak Wathanasin)
Re: Adaptec 19160 (Vince Hickey)
Re: how to enter a bug report against linux? (Mark Wilden)
Linux News (MR-ED)
Drivers for Caldera OpenLinux v2.3 ([EMAIL PROTECTED])
Can I delete "core"? ("Jackie")
Re: gnome 1.2 menu bar ([EMAIL PROTECTED])
Re: Sun Sparc faster then intel pentium: (What about the compiler?) (Dave Schanen)
Re: Can I delete "core"? (Andreas Kahari)
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Timothy J. Lee)
Subject: Re: Need recommendation for linux-based e-mail server.
Date: 2 Jun 2000 04:46:43 GMT
Reply-To: see-signature-for-email-address---junk-not-welcome
George Smiley <[EMAIL PROTECTED]> writes:
|I would appreciate any feedback to help me with this problem.
|
|Our company is trying to set up an e-mail/web infrastructure.
|We need a box that can sit between the WAN router and our
|local LAN. The following are the requirements.
|
|1) OK to be commercial and/or expensive.
|
|2) Should distribute internal e-mail and route
| mail externally. Should provide POP3 and IMAP
| mailboxes.
|
|3) Should support the internet and and intranet (different websites
| etc.)
|
|4) Should provide a firewall.
|
|5) Should provide VPN functionality so that traveling employees
| can access their e-mail securely. (Ideally, the VPN client
| should work from a browser, or at least be cross-platform,
| windows and linux). But we can live without the cross-platform
| in a pinch.
|
|6) Should be scaleable to several hundred users.
|
|7) SHOULD BE EASILY ADMINISTRABLE. A piece of cheese should be
| able to administer it (my boss's own words).
|
|8) A DHCP server built in.
|
|9) Commercial support should be available.
|
|My boss wants to use NT with a big-ass server from Dell, but he said
|he is willing to consider linux if I can find a solution that
|supports the above criteria.
Regardless of OS, it is not a good idea to combine 2, 3, 4, 5,
and 8 all in one server. Doing so creates complexity that makes
7 impossible and makes it easier to have security and reliability
problems. You probably want at least 5 computers for the tasks
listed above:
* mail server
* external web server
* firewall
* internal web server
* DHCP server (may be put on any of your other internal
computers)
Taking each requirement individually:
2. Linux (or BSD) can do it with:
a. a mail transport agent like postfix, qmail, or sendmail.
b. an IMAP and/or POP server, such as UW imapd/ipop3d, Cyrus,
or Courier-IMAP.
c. OpenSSL and sslwrap, sslproxy, or stunnel to for SSL encrypted
email reading.
d. TCP wrappers or ipchains to prevent users from using the
unencrypted IMAP and POP services from the outside.
3. Web servers can be made with Apache. OpenSSL and mod_ssl can be
used to add SSL web serving. You probably want separate web
servers for the internal and external web pages, in order to
avoid inadvertant showing of the internal web pages to the outside.
4. A dedicated firewall computer to protect your internal network
is probably the best thing. Preferably, it shouldn't have other
stuff on it, with the possible exception of VPN stuff.
5. You don't need VPN just to read mail. SSL IMAP and POP access
can serve the need, or a an SSL enabled web server (e.g. Apache
with OpenSSL and mod_ssl) with a mail-to-web setup like horde.org's
IMP can be used to allow web mail reading. OpenBSD, and perhaps
other BSDs, may be of interest if you want to set up IPSec VPNs.
6. Most of these tools should be scalable, except for maybe IMP
(but there are other mail-to-web programs available). UW imapd
and ipop3d do not scale well to huge mailboxes with the default
Unix mailbox format, but other non-default formats like the MBX
format can dramatically improve performance.
7. Whoever administers the computers needs to learn about mail,
web serving, and security. Pretty GUIs only give an illusion
of ease of setup; someone who does not understand mail, web
serving, and security can easily make a mess.
8. DHCP serving for your internal network can be provided by
ISC dhcpd; it need not be running on the same computer as any
of the other named services.
All of the programs above are freeware, but there are patent issues
with the RSA stuff used in SSL if you are in the United States.
For security reasons, you may also want to consider the BSDs (OpenBSD,
FreeBSD, NetBSD) for the base OS, since many Linux distributions are
aimed at end users in protected networks, rather than servers on the
potentially hostile internet. Linux can be made quite secure, but the
more things open by default, the greater the chance of missing one during
the setup.
--
========================================================================
Timothy J. Lee timlee@
Unsolicited bulk or commercial email is not welcome. netcom.com
No warranty of any kind is provided with this message.
------------------------------
From: Chic Wack <[EMAIL PROTECTED]>
Subject: Question About Embedded Linux
Date: 2 Jun 2000 04:47:46 GMT
Hi, I'm trying to port embedded linux to Matsushita(Panasonic)
AM33(MN10300). Does anyone know if there is any solution ready
or any information about it? Thank you.
=======================================
Joseph Chiu from Taiwan
e-mail: [EMAIL PROTECTED]
------------------------------
From: lanbaba <[EMAIL PROTECTED]>
Subject: Where is /usr/include/bsd
Date: Fri, 02 Jun 2000 01:20:04 -0400
A program I tried to compile require the header files from BSD. But
there is no such directory under my Mandrake linux 7.0. Can somebody
point out where it went?
Thanks
Lanbaba
------------------------------
Crossposted-To:
comp.os.linux.development,comp.os.linux.development.apps,comp.os.linux.development.system,comp.os.linux.advocacy
Subject: Re: Need ideas for university funded project for linux
From: [EMAIL PROTECTED]
Date: Fri, 02 Jun 2000 05:39:07 GMT
[EMAIL PROTECTED] (Christopher Browne) writes:
[comparing forks in software development to religious disputes]
> The Protestant Reformation didn't happen because all was well and
> good; it was a reaction to some _significant problems_ in the Catholic
> Church.
Fine. If we must have this analogy, many of the original complaints
were addressed - and quickly, by the way - by mainstream Catholicism.
This did not, in any way, lessen the influence of the Protestant
movement. It just changed what they were protesting, often
inexplicably so.
And let's not forget the Protestant Protestants, if you will. The
Puritans, for example.
> Similarly, code forks do not occur as an inherent good; they happen as
> what is considered, at least by the reformers, as a "lesser of evils."
The problem being, of course, that there is nearly always zero
communication between the developers on separate sides of the breach.
Thus, even if ideas cross the gap, the patches never do, and the code
ends up evolving in different directions. It's a natural thing; new
leadership produces new goals.
The reason egcs was reintegrated with gcc is that there was
effectively no development being done on gcc. This is not a proper
fork at all, because one of the tines stopped immediately.
> There are some of the APIs _within_ Linux (e.g. - VFS, kernel modules)
> where nobody has gotten arrogant enough to consider that they may
> speak "Ex Cathedra" to indicate that they signify "authoritative
> teaching."
Curiously, RH 6.1 on a Debian 2.1 kernel has problems mounting ext2fs
drives. RH reports an unsupported option that prohibits read-write
mounting.
[distros and forking]
> They are all "suffering" from the fact that the core components
> continue to be developed, and that releases of those components do not
> happen in a "lock step" manner that is well-synchronized with when
> distribution makers decide to "make golden" _their_ releases.
Realistically speaking, do you think development on any software
product stops because the package it's included in goes gold?
Historically, I think that the big distros will release "older"
components (those linked with the previous glibc, for example) rather
than go with a half-and-half approach or delay going gold.
> So long as the distributions have independent "source trees," which
> are being independently updated from the _true_ sources (e.g. -
> periodically pulling updates from what Ulrich Drepper does with
> GLIBC), they will "suffer" from this problem.
I have no problem with distros adding bugfixes and the like to
programs, so long as they're reasonably well-researched and -done. I
do have a problem with them adding new features or functionality, or
changing things around.
The job of a distribution is to, well, distribute. Insofar as
modifying certain things makes programs easier to distribute, I'm okay
with it. But I don't really approve of some of the "enhancements"
that all the distros are occasionally guilty of.
> On the other hand, other components of KDE/GNOME are still pretty much
> of "alpha test" quality. (Bonobo and GNOME-print come to mind...)
I developed a large hatred for RedHat today after their [GNOME]
installer consistently bombed for no apparent reason. (And the
installer, in its infinite wisdom, immediately shut down the machine.)
> By the way, the introduction of XFree86 4.0 is going to cause much the
> same problem for distribution makers over the next six months or so.
Good Lord, yes.
Fortunately, the X folks for Debian seem to be taking the proper
approach (that is, "wait and see, and then wait a little longer").
I'd far rather have XF86 4.0 late, and working, than now, and broken.
Not that any of this stopped me from downloading and installing it in
a non-package form. We'll see what hassles that creates down the
road.
> At this point in time, the 4.0 release is "only really suited to those
> happy to play with code," as it lacks the config tools as well as some
> device drivers that is needed for it to be considered "generally
> available."
Heh. The only X config tool I've ever used is xf86config, which is
available for XF86 4.0.
> My prediction is that whomever first _sells_ a distribution that
> contains XFree86 is likely to rush it into place _far_ too quickly,
> and that _horrible_ things will be said about them. RHAT has a
> history of this, to some extent; they adopted GLIBC 2.0, an
> experimental version, and got bashed pretty heavily over the problems
> that arose not only with incompatibilities between GLIBC 2.0 and LIBC
> 5.4.x, but also with the "production" release of GLIBC, 2.1.
Hmm. I seem to recall reading that Debian pulled the transition off
quickly and quite successfully. Was I misinformed?
--
Eric P. McCoy ([EMAIL PROTECTED])
non-combatant, n. A dead Quaker.
- Ambrose Bierce, _The Devil's Dictionary_
------------------------------
Crossposted-To: comp.os.linux.questions,comp.sys.sun.hardware,comp.sys.sun.misc
Subject: Re: Sun Sparc faster then intel pentium: (What about the compiler?)
From: Steven Yap <[EMAIL PROTECTED]>
Date: Fri, 02 Jun 2000 05:41:34 GMT
Dave Schanen <[EMAIL PROTECTED]> writes:
> Alpha's are a nice chip, but they're bulky, hot (requiring special
> fans etc.) and don't have much in the way of applications. They
> also don't have a multimedia instruction set at all, like MMX,
> 3Dnow!, or SPARC's VIS instruction set, so doing any kind of
Actually Alphas DO have similar instructions. They're call MVI -
Motion Video Instructions. See
http://www.alphalinux.org/docs/MVI-full.html
--
Steven Yap
------------------------------
From: "Jackie" <[EMAIL PROTECTED]>
Crossposted-To: linux.redhat.misc
Subject: Re: HowTo Change Screen
Date: Fri, 2 Jun 2000 13:01:03 +0800
"Dances With Crows" <[EMAIL PROTECTED]> ????? >
>Ctrl-Alt-F1..F6? Or doing the "make menuconfig" in an xterm within an X
> session? How did you get as far as compiling your own kernel without
> knowing about these things, which are in every boxed distro's manual?
My company is using a NT network, and my boss wanted me to add a Linux
workstation to use the NT's resources (somewhat experimental). So, I was
suddenly pushed into this Linux world.
I was told that, to use NT server's resources, I need to re-compile the
kernel with SMB support. So, that's why I'm here.
- Jackie
------------------------------
Subject: Re: Sun Sparc faster then intel pentium: is this true????
From: Sak Wathanasin <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.questions,comp.sys.sun.hardware,comp.sys.sun.misc
Date: Fri, 02 Jun 2000 01:42:32 +0100
In article <8h66pa$4s1$[EMAIL PROTECTED]>, Peter Radcliffe
<26$10$[EMAIL PROTECTED]> wrote:
> The internal bus on a sparc 20 only does 10mb/sec.
Uh huh; weren't you the one who said
> > I believe Casper was talking about the scsi bus speed on the older
> > sparcs. I get nontrivial disk bandwidth with just Wide 7200rpm disks
> > on my SS20s.
This (sub-)thread started when I said
> There's no need to get so sniffy - they're UDMA66 drives and I get
> about 14 MBytes/sec...etc... I doubt you'd get that kind of performance on
> an older SunSparc, at least I don't think my SS20 with a Seagate
> Barracuda can manage it ...
At which point, I got jumped on and was told that
> > W/ fast SCSI disks, even older Sun's can do 20MB/s.
Clearly this cannot be so if the bus is limited to 10 mb/s, so to get
the 20 m/s speed, one presumably needs to add an SBUS card at no small
expense.
> You're comparing modern IDE with ancient SCSI. Come back when
> you're comparing apples to apples and not apples to oranges.
That was what I was trying to say: that the IDE drives have improved
greatly, that the performance difference has narrowed considerably and
the price differential has, if anything, widened. Clearly there are
plenty of applications where the performance of SCSI is much more
important than price, but there are probably even more applications
where modern IDE/UDMA will do very nicely. I guess I don't understand
this "SCSI is best for everything" attitude.
--
Sak Wathanasin
Network Analysis Limited
178 Wainbody Ave South, Coventry CV3 6BX, UK
Internet: [EMAIL PROTECTED] Phone: (+44) 24 76 419996 Fax: (+44) 24 76 690690
------------------------------
From: Vince Hickey <[EMAIL PROTECTED]>
Crossposted-To: alt.os.linux,alt.linux,comp.periphs.scsi,uk.comp.os.linux
Subject: Re: Adaptec 19160
Date: Thu, 01 Jun 2000 16:55:55 +0000
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crs wrote:
> Chris West wrote:
>
> > Does anyone know if there's a Linux driver available for the Adaptec 19160
> > SCSI card?
>
> I've been using this card with the aic7xxx adaptec module and it seems to
> work OK.
I will second that.
--
o Stickman Administrator
<|> System Administration
/ \ Network Engineer
Stress is when you wake up screaming "Just
tell me what it says on the screen!"
E Pluribus *nux
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crs wrote:
<blockquote TYPE=CITE>Chris West wrote:
<p>> Does anyone know if there's a Linux driver available for the Adaptec
19160
<br>> SCSI card?
<p>I've been using this card with the aic7xxx adaptec module and it seems
to
<br>work OK.</blockquote>
<p><br>I will second that.
<br>
<pre>--
o Stickman Administrator
<|> System Administration
/ \ Network Engineer
Stress is when you wake up screaming "Just
tell me what it says on the screen!"
E Pluribus *nux</pre>
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------------------------------
From: Mark Wilden <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.advocacy
Subject: Re: how to enter a bug report against linux?
Date: Fri, 02 Jun 2000 07:44:52 +0100
Robert J Carter wrote:
>
> REMOVE EVERY DAMN COMMENT IN IT.
There is a school of thought (Martin Fowler is a don) that says that
commenting indicates that the code is too complicated, and needs to be
refactored.
I don't go that far. I do like to see a brief comment at the top of each
function expressing its contract with the outside world. There's only so
much meaning you can include in a single function name, after all.
------------------------------
From: MR-ED <[EMAIL PROTECTED]>
Subject: Linux News
Date: Fri, 02 Jun 2000 07:31:50 GMT
You can find Linux news at http://212.120.127.178
------------------------------
From: [EMAIL PROTECTED]
Subject: Drivers for Caldera OpenLinux v2.3
Date: Fri, 02 Jun 2000 07:36:15 GMT
Hi All,
Could you please let me know where I can download the drivers
for the following devices to work on Caldera Open Linux v2.3 (Creative
donnot have anything for Linux):
Creative Vibra 128 - sound card
DEXXA 4800 - flatbed Scanner
Epson Stylus Color 600 - color printer.
Thanks in advance
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: "Jackie" <[EMAIL PROTECTED]>
Subject: Can I delete "core"?
Date: Fri, 2 Jun 2000 15:13:35 +0800
Can I safely delete the file "core" in home directory to release disk space?
What is the use of that file anyway?
- Jackie
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: gnome 1.2 menu bar
Date: Fri, 02 Jun 2000 07:50:59 GMT
Stupid me!
When I clicked with the right mouse button I thought that was just to
run the apps I didn't realize it added them to the menu bar.
Cheers
In article <[EMAIL PROTECTED]>,
ray <[EMAIL PROTECTED]> wrote:
> [EMAIL PROTECTED] wrote:
>
> > Now I've got the menu bar up.
> > How do I configure it?
> >
>
> > <snip>
>
> I'll assume you are working with the Mac-like full screen top-bar, as
that
> was the subject leading to this. Right click anywhere blank, there
will be
> a drop-down, choose applets, and add what you want. NOTE: Also, if you
> come down further to "panel" -> "Add to Panel" there will be a lot
more
> choices than just applets. Have fun!
>
> --
> Ray R. Jones
> The Computer Shop
> [EMAIL PROTECTED]
> HTTP://gordo.penguinpowered.com
>
>
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
From: Dave Schanen <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.questions,comp.sys.sun.hardware,comp.sys.sun.misc
Subject: Re: Sun Sparc faster then intel pentium: (What about the compiler?)
Date: Fri, 02 Jun 2000 03:03:03 -0500
Steven Yap wrote:
>
> Dave Schanen <[EMAIL PROTECTED]> writes:
>
> > Alpha's are a nice chip, but they're bulky, hot (requiring special
> > fans etc.) and don't have much in the way of applications. They
> > also don't have a multimedia instruction set at all, like MMX,
> > 3Dnow!, or SPARC's VIS instruction set, so doing any kind of
>
> Actually Alphas DO have similar instructions. They're call MVI -
> Motion Video Instructions. See
> http://www.alphalinux.org/docs/MVI-full.html
I stand corrected, any idea when this was implemented into alpha chips?
Dave-o
------------------------------
Subject: Re: Can I delete "core"?
From: [EMAIL PROTECTED] (Andreas Kahari)
Date: 2 Jun 2000 10:03:43 +0100
In article <8h7oqr$eku$[EMAIL PROTECTED]>, Jackie <[EMAIL PROTECTED]> wrote:
>Can I safely delete the file "core" in home directory to release disk space?
>What is the use of that file anyway?
>
>- Jackie
>
>
You may safly delete it. It is a memory dump created by a crashing
application (use "file core" to see which app). It may be used for
debugging...
It is called "core" because in the old age memory consisted of iron
cores (iron+electicity=magnetism).
When a program craches and creates a core file, one says that it "core
dumps" or "dumps core".
/A
--
# Andreas K�h�ri, <URL:http://hello.to/andkaha/>.
# All junk e-mail is reported to the
# appropriate authorities, no exceptions.
------------------------------
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End of Linux-Misc Digest
******************************
