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From: burgess@cynjut.neonramp.com (Dave Burgess)
Newsgroups: comp.unix.bsd.netbsd.announce,comp.unix.bsd.freebsd.announce,comp.answers,news.answers
Subject: [comp.unix.bsd] NetBSD, FreeBSD, and 386BSD (0.1) FAQ (Part 8 of 10)
Supersedes: <386bsd-faq-8-838497777@cynjut.neonramp.com>
Followup-To: comp.unix.bsd.netbsd.misc
Date: 28 Aug 1996 09:13:32 -0500
Organization: Dave's House in Omaha
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Approved: news-answers-request@MIT.Edu,cgd@sun-lamp.cs.berkeley.edu
Expires: 09/15/96 09:13:23 CDT
Message-ID: <386bsd-faq-8-841241603@cynjut.neonramp.com>
References: <386bsd-faq-1-841241603@cynjut.neonramp.com>
Reply-To: burgess@cynjut.neonramp.com (386bsd FAQ Maintainer)
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Keywords: FAQ 386bsd NetBSD FreeBSD !Linux
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Posted-By: auto-faq 3.1.1.2
Archive-name: 386bsd-faq/part8
Section 7. (System Communication and Network Information)
7.0 Communications
386bsd and its kith support a wide range of communications methods.
7.1 SLIP/CSLIP
Serial Line I/P is supported in all versions of PC BSDs.
Brian <brian@awfulhak.demon.co.uk> provides us with a rather
good explanation of some of the hurdles that must be overcome
for a working slip interface.
The idea is (overview) that you make a serial line connection to
the host, set the line discipline, and tell your router to use
this interface as your gateway. You also should set the gateway
up as a nameserver.
You will need the information in 7.4.1 below to make sense to
you before you proceed much further. I suggest you read that
now.
Sounds easy ? - well it is if you've done it before.
The _usual_ way of doing this is as follows:
Both server and client must know eachothers inet addresses. Set
these up in /etc/hosts with lines saying
11.22.33.44 host.my.domain.name host
11.22.33.55 client.my.domain.name client
where 11.22.33.?? is your inet number, and the following name is
the full machine name (and is followed by any number of aliases).
SERVER:
Create a login - usually Sclientname - and run `sliplogin` as
its shell. I've looked at the docs for sliplogin, and it seems
fairly straightforward. [Ed.Note - I have; it is.]
A fairly common problem on the server is an error that is
caused by the lack of a 'sliplogin' entry in the /etc/shells
file. Be sure to add sliplogin to your shells file.
CLIENT:
Set up /etc/resolv.conf to say the following (for the nameserver)
domain client.my.domain.name
nameserver 11.22.33.55
** traditional method **
- Log on to the server. This is usually done via kermit or
some such program.
- Exit the program (or background it if your line wants to
drop once the device is closed).
- Run `slattach /dev/comport` for whatever "comport" is. On most
BSD derived systems, this may be either com0, or cua01, or
whatever the correct name is for your site.
If you run into an error that says 'not configured' in it, your
kernel either does not recognize your port (dmesg will verify that)
or your kernel does not have the slip interface built in. See
below for the latter. The former could be caused by any one of
a dozen problems, including conflicting or incorrectly identified
IRQs or port addresses.
- Run `ifconfig sl0 net clientname servername netmask 0xffffff00`
- Run `route add default servername`.
"servername" is your server and "clientname" is your client.
It should now be possible to `ping host`
** my method **
Configure /etc/remote
Configure /etc/host.dial
Run `slip host`.
/etc/remote contains an extended `tip` entry. /etc/host.dial
contains a login script (and is named in /etc/remote).
Oh yes, don't forget to have a line in your kernel config saying
pseudo-device sl 2
Without this line, you may get a 'device not configured' or
'TIO...' error because the slip driver is not built into the
kernel.
Someone else mailed me their instructions for using a SLIP
service. Here they are, in all their glory.
Hi, I thought I'd drop you this email outlining how I have
SLIP set up to dial and communicate, as I remember this being
an area in the FAQ which needed some expansion/clarification.
What I outline works for me dialing up under NetBSD 0.9.
Though I don't know the specific nuances of FreeBSD (eg. the
boot-up configuration of the interfaces - /etc/hostname.sl<n>
for NetBSD) this'll be easy for someone to add to, hopefully
before you release it (I know there's nothing I hate more
than having to convert one setup's info into another nearly,
but not quite, the same setup :-)
In the last quoted script file (slip-off) the unlock line should
read:
/usr/local/etc/unlock LCK..$DEVICE
1) Configuring the SLIP interface.
Ensure that the sl device is present in your kernel (default with
the generic kernels). In NetBSD 0.9 they get assigned in turn
with each 'slattach'.
Put your own hostname and ip number, and that of your dial up
gateway, into your /etc/hosts. This is mine:-
127.0.0.1 localhost
158.152.1.65 gate gate.demon.co.uk
158.152.26.67 blodwen blodwen.demon.co.uk
Ensure that your /etc/resolv.conf is set up appropriately, to
point to the nameserver of your dial-up provider/link. This is
what I use:-
domain demon.co.uk
nameserver 158.152.1.65
nameserver 158.152.1.193
(you can have up to three nameservers, they -must- be listed by
number. If you wish to look in several domains, you can use
'search demon.co.uk,foo.other.domain' etc. up to the limit (a
finite length specified in resolver(5).) Also, for more
flexibility, there is a nameserver switch package that allows
you to change the resolver profiles on the fly; see below.
Your sl interface needs to be configured using ifconfig(1) as a
link from your own hostname to that of your dial-up host. Manually
this can be done by:-
/sbin/ifconfig sl0 <your-machine> <dial-up-machine>
on NetBSD this can be done at boot-time, by having the following
in /etc/hostname.sl0:-
inet blodwen.demon.co.uk 255.255.255.0
dest gate.demon.co.uk
(You can substitute sl0 for sl<n> if this will after another
slattach e.g. for a local machine on a fixed cable)
The netmask value (255.255.255.0 in this case) is pretty
irrelevent to SLIP because you cannot have a subnet broadcast
(so I am informed).
I use the chat(1) program (currently available in the
FreeBSD-current/ports/ directory) to dial up and enter
passwords, etc. My modem is setup for hardware handshaking
(a necessity really, for performance), and I use the following
sh scripts to do the work. Calling 'demon' dials up and connects.
Calling 'demon-down' when on-line shuts it all off. Those who
use PPP should be able to work out the changes from the original
ppp-on and off scripts.
[I call it 'demon' for simplicity]
#!/bin/sh
#
# attach slip and route (calls slip-on script)
if /usr/local/etc/slip-on
then
# this adds the default route to 'gate' which is
# my dial-up host
route add default gate
# put anything here to be run when you are connected
# slurp news
/usr/local/etc/slurp news.demon.co.uk &
# send outgoing news
/usr/local/news/bin/nntpsend
# kick outgoing email
sendmail -q0m
else
# slip-on failed
fi
[ here's my /usr/local/etc/slip-on ]
Note that you may need to adjust the chat command to deal with the
prompts you have to answer or that your modem produces, and the final
message (my provider sends HELLO to signify that they are ready. The
-v to chat makes it send syslog .info messages, which I then send to
my /dev/console. You can remove this if you wish.
The following is a modified version of the ppp-on script that comes
with chat, altered to set the serial line correctly for the modem. I
dial-up at 38400bps on a modem on tty03, you might want to change that
too (and make sure that the stty line is all kept on one line).
#
# slip-on
#
# Set up a SLIP link
#
LOCKDIR=/var/spool/lock
DEVICE=tty03
PHONE=<phone number here>
USER=<your login>
PASSWORD=<your password>
if [ -f $LOCKDIR/LCK..$DEVICE ]
then
echo "SLIP device is locked"
exit 1
fi
/usr/local/etc/fix-cua $DEVICE
sleep 16000 < /dev/$DEVICE &
/bin/stty -f /dev/$DEVICE
gfmt1:cflag=4b00:iflag=c00:lflag=3:oflag=6:discard=f:dsusp=19:eof=4:
eol=ff:eol2=ff:erase=0:intr=3:kill=0:lnext=16:quit=1c:reprint=12:
start=11:status=ff:stop=13:susp=1a:werase=17:ispeed=38400:ospeed=38400
(
if chat -v -l LCK..$DEVICE ABORT "NO DIALTONE" \
ABORT "NO CARRIER" ABORT BUSY "" ATZ OK
ATDT$PHONE "CONNECT 38400" "" "ogin:" "$USER" \
"word:" "\\q$PASSWORD" "HELLO"
then
/sbin/slattach -h -c -s 38400 $DEVICE
exit 0
else
echo "SLIP call failed" 1>&2
# remove the sleep holding serial line open
/bin/kill -KILL `/bin/ps -ax | /usr/bin/egrep " sleep 16000" \
| /usr/bin/egrep -v "egrep" | /usr/bin/sed 's/^\([ 0-9]*\)
.*/\1'/`
exit 1
fi
) < /dev/$DEVICE > /dev/$DEVICE
When it comes to switching off the line, I use the following. Don't
forget to adjust the sl0 as appropriate
[ I call it demon-down for simplicity]
#!/bin/sh
# stop script
#
/usr/local/etc/slip-off
/sbin/ifconfig sl0 down
[ and /usr/local/etc/slip-off ]
and adjust the DEVICE line as well.
#!/bin/sh
DEVICE=tty03
kill -KILL `ps -ax | egrep "slattach.*${DEVICE}" | egrep -v "egrep" \
| sed 's/^\([ 0- 9]*\) .*/\1'/`
kill -KILL `ps -ax | egrep " sleep 16000" | egrep -v "egrep" \
| sed 's/^\([ 0-9]* \) .*/\1'/`
# switch line back to normal (closes line)
/bin/stty -f /dev/$DEVICE -clocal
# unlock the device
/usr/local/etc/unlock LCK..$DEVICE
exit 0
And that should do it. Happy SLIPping!
7.2 PPP
Implementations of Point to Point Protocol are also available. PPP
has been available since the 0.9 release of NetBSD and is in the
current releases of FreeBSD, OpenBSD, and NetBSD.
It should also be noted that there is a newsgroup that covers the
PPP protocol exclusively. It is comp.protocols.ppp.
Here is some information for people desiring to set up PPP in
there systems:
A simple way to do this is to use the "chat" and a chat file. I
use the following command to initiate a connection :
root# pppd tty01 19200 connect 'chat -v -f chat.my-isp'
And in the chat.my-isp file:
ABORT BUSY
ABORT ERROR
ABORT 'NO DIALTONE'
ABORT 'NO CARRIER'
'' ATZ OK ATDT1234567 CONNECT \d
TIMEOUT 5
ogin:\s--ogin:\s mylogin ssword: mypasswd prompt:\s /usr/lib/ppp/ppp
This dials, connects and negotiates the addresses from just one
line entered.
To kill the connection:
root # kill `cat /var/run/ppp0.pid`
which has the added advantage of hanging up the phone if the modem
is set up appropriately.
The biggest problem that I ever had with this was working out the
chat script and that was debugged by adding the following line in
/etc/syslog.conf:
# Hand chat debug messages to root
local2.debug root
The PPP.FAQ was helpful, but I ignored quite a bit of it and depended
more on the online manuals.
For setting up the PPP dasmon, here is some more information:
For NetBSD, it turned out that I needed to rebuild the kernel with
the following line in my config file,
pseudo-device ppp 1
This line adds a device driver to the kernel that does the ppp
protocol. Once I had that built in, everything worked the first time.
This is the kind of sequence I go through to start ppp:
1. Connect with kermit to my ppp account and login. The account
tells me when it starts ppp.
2. "Suspend" kermit (i. e. put it in the background). This gets me
back to the shell prompt. (You can get kermit back using the "fg"
command)
3. Start "pppd". When the shell prompt returns, I then have
Internet access!
That's it. This procedure will get you access to machines by using
their IP address numbers. You still have to configure a name server
in "resolv.conf" in order to get DNS functionality. My resolv.conf
looks like this:
domain umd.edu # Maryland's domain name
nameserver 128.8.5.2 # These are the IP addresses of three
nameserver 128.8.126.2 # hosts that can act as name servers
nameserver 128.8.126.3
The name servers should be as "close" as possible. Whatever machine
manages the modem pool your on would be the best but any machine on
your local loop will give you good performance.
If your Internet Service Provider uses dynamic addressing, You
don't even have to worry about this. It's the point of PPP. It's
actually a good thing from a security point of view. Your IP address
changes w.r.t. to the rest of the net periodically. By the way,
don't forget passwords on all your accounts!! When your on PPP,
the rest of the net can see you too, you look like a full Internet
host.
It is improtant to look into the following to see if any of them
apply to you, if you still have questions:
Here is a sample PPP config.
1) Make /etc/ppp directory, then populate as follows:
2) Include the following in '/etc/ppp/options':
crtscts
modem /* This option opens the port with O_NONBLOCK if there
is a connect options specified, andresets CLOCAL when
the connection is closed */
19200
defaultroute
netmask 255.255.255.0
ipcp-accept-local
ipcp-accept-remote
noipdefault
connect "/usr/sbin/chat -v -f /etc/ppp/sample.chat"
3) Make sure the modem line (in the '/etc/ttys' file) doesn't
have the 'local' or 'softcar' options included. With 'local;, CLOCAL
will be set for that line and SIGHUP may or may not be sent,
apparently based on the age of the software. The "modem" option
in the 'options' file (above) should clear that, but it may or
may not ever work. If you have "softcar" in /etc/ttys, then the
SIGHUP (in fact, almost all of the signals) will never work
because the modem lines are effectively ignored, thereby leaving
the modem in whatever mode it is in.
4) Include the following in '/etc/ppp/sample.chat':
ABORT BUSY ABORT 'NO CARRIER'
'' atdt5551212
rname: {sample}
sword: crackme
annex: {whatever}
PPP.
This setup uses LCP and IPCP (parts of PPP) to negotiate the
dynamic IP addresses. This setup assumes an ISP which uses an
annex terminal server. It prompts for "Annex username:" and
"Annex password:". You then get to the command line prompt:
"annex:", at which point "PPP" starts the PPP session. You
will have to edit this to suit. If your ISP uses a system where
you are automatically connected to PPP when you log in, your
'/etc/ppp/sample.chat' file might look like this:
ABORT BUSY ABORT 'NO CARRIER'
'' atdt5551212
rname: {sample}
sword: crackme
To implement a 'permanent PPP' dial-up connection, the following
has been used (by me specifically!) This works in NetBSD 1.1 or
higher, OpenBSD, and perhaps recent versions of FreeBSD:
The following line in /etc/ttys works wonders for making a
permanent link:
tty01 "/usr/sbin/pppd" unknown on rtcsts
The file '/etc/ppp/options' looks like:
/dev/tty01
115200
connect "/usr/sbin/chat '' 'atdt1' 'ogin:' 'x' 'sword:' 'x'"
crtscts
defaultroute
lock
netmask 255.255.255.0
n.n.n.n:n.n.n.n
-ip
modem
mtu 1500
-detach
You will, of course, have to make some changes if you have
multiple ppp connections. The key here is the '-detach' to
make the pppd remain connected to the controlling terminal
(the modem). The basic idea is if the link drops (i.e. loses
carrier), a hangup signal will be sent to pppd, causing it to
exit, and init will restart it.
You can also try 'demand dialed PPP' by getting the iij-ppp
package from the following:
ftp://ftp.iij.ad.jp/pub/network/iij-ppp0.94beta2.tar.gz)
It supports BSDI's BSD/386 1.1, FreeBSD-2.0, and NetBSD-1.0, but
it should be really easy to make it work with NetBSD-1.1 (it
comes with a patched NetBSD-1.0 tun driver... to get it working
with 1.1 or -current you will need to make the same patches to
NetBSD-1.1's tun driver). You can also try 'dp' at:
ftp://phoenix.acn.purdue.edu/dp/dp-4.0.tar.gz
7.3 TCP/IP
TCP/IP is an integral part of BSD 4.4 Lite. There are at least
five different network card drivers. TCP/IP is fully supported
and is available to all users of all derived BSD systems. In
fact, many people believe that this area is one of the primary
advantages that BSD has over Linux. After all, TCP/IP was
invented in BSD.
7.4 UUCP
There is an excellent document included in the UUCP directory
that describes in detail, what needs to be done to get a
working UUCP for derived BSD systems. Look in the
/usr/src/gnu/libexec/uucp directory for more information. You
can also look in the /usr/share/doc/smm/09.uucpimpl and
/usr/share/doc/smm/21.uucpnet if yours are populated.
7.4.1 TIP/CU
First thing you need to do is...
vi /etc/remote
Then remove the two lines at the bottom of the file that mention
com1, and com2. Now add the following lines:
tty00:dv=/dev/tty00:br#9600:
tty01:dv=/dev/tty01:br#9600:
That tells tip/cu where to find your com ports. Next you need
to be logged in as root and do a:
chown uucp.dialer /dev/tty00
chown uucp.dialer /dev/tty01
touch /var/log/aculog
chown uucp.dialer /var/log/aculog
Make sure that, if you are running newsyslog, you change the
owner.group entry in the newsyslog.conf file so that the file
ownership is maintained correctly.
Then you should be all set, remember "DOS Com1" = tty00, and
"DOS Com2" = tty01. So, if your modem is at 0x2F8/IRQ=3 and
you access it as the COM2: port from DOS, you would do..
tip tty01
To exit, type <RETURN>~.<RETURN>
Many people have other problems with cu. The lock open:
procedure is one of them. If you receive the error:
lock open: no such file or directory
all ports busy
You need to create a directory: /var/spool/lock, owned by uucp. If
this file already exists and is owned correctly, make sure that the
lock file in the directory is deleted.
If you receive the error "cu: write: Input/output error"
You may be able to fix this by creating an /etc/uucp/ports file
(see Taylor UUCP docs).
In addition, those of you using cu version 1.04 may need to add the
following to their susyem:
create an /etc/uucp/ports file that looked like this:
port mymodem
type modem
device /dev/tty01
speed 19200
Now cu knows that the line is connected to a modem it does the
right thing regarding setting CLOCAL on the line. You don't
even have to have either of local or softcar set in /etc/ttys.
Since cu's behaviour seems to be correct, I'm happy now. All I
need to really make my day though is to have John or Martin to
tell me that cu 1.04 still works for them even though they don't
have an /etc/uucp/ports (or equivelent HDB or V2 uucp config)
file ... :-)
7.4.2 What is the magic incantation that allows the modem to dial?
Try 'stty -f /dev/tty0? clocal'. Change the '?' for whatever
character is appropriate for your tty port. Remember, DOS COM1 =
/dev/tty00 and DOS COM2 = /dev/tty01...
Some other things that might cause some problems are the entries
in the /etc/remotes file. Try 'com?:dv=/dev/tty0?:br#19200:pa=none'
and see if that helps. Remember to replace the '?' with '[01234]'
as appropriate.
NetBSD-current has implemented the 'ttyflags' program. This
will set your com ports according to the options specified in
the /dev/ttys files. This is an even better solution than the
'stty ... clocal' fix from above!
FreeBSD sets this up a little bit differently by having seperate
dial in and dial out devices available. The /dev/cua?? devices
all have clocal set by default to allow the system to dial out
without having a carrier present. If you are using FreeBSD and
don't have any cua devices in the /dev/ directory, you need to
run the ./MAKEDEV script. See the man page for more infomation.
7.4.3 My modem on DOS COM3 or DOS COM4 works with DOS, but not with
*BSD. It is set up using IRQ 4 (or 3) respectively.
One of the MAJOR differences between DOS and *BSD is that *BSD
actually USES the IRQ lines (*gasp*)... That means that every
device on the ISA bus has to have it's own IRQ. Since COM1 and
COM2 (/dev/tty00 and /dev/tty01) are already defined using IRQs
4 and 3 respectively, that means that COM3 and COM4 (/dev/tty02
and /dev/tty03) need to be put onto different IRQs. The default
GENERICAHA kernel defines the third com port (COM3 or /dev/tty02)
to be on IRQ5. You need to reconfigure your com port (for
external modems) or modem (for internal modems) to use IRQ5.
The GENERICBBT kernel defines the COM4 port to be on IRQ9 (or 2).
If you have to put your devices on other ports, you will need to
recompile the kernel.
7.5 How do I configure my nameserver?
There are several systems that implement /etc/nsswitch.conf
instead of the /etc/resolver.conf database. Each has advantages
and disadvantages, and both have been implemented for NetBSD.
If you want to use nsswitch, you can get it at 'ftp://?/?'.
7.6 Terminals
Since the target machine for most BSD machines is a 386 with
no more than a couple of serial ports, most people do not bother
with serial terminals. For most problems, a quick perusal of the
man pages for the ttys file and getty are enough to get them
started. Other than that, most terminal problems are limited to
peculiarities of particular terminals.
One common problem that appears to crop up from time to time is
which wires need to be connected at each end of the cable. Most
cables do not, in fact, pass through all lines. If your terminal
uses XON/XOFF (DC1/DC3) protocol, a cable of the appropriate
twist, either straight through or null modem, can have as few as
three lines connecting the two devices. Assuming DB-25 connections
at each end, the lines need to go from 2 to 3, 3 to 2, and 7 to 7.
These lines are Rx, Tx, and gnd. Other lines that may or may not
be required include 4 and 5; and 6, 8, and 20. Normally, these
lines would be connected within the 'hood' of the cable (4 to 5
and 6 and 8 to 20) to simulate the functionality of the full
blown cable. While full support for CTS/RTS is not available
(yet), other support for the remainder of these lines is available
or is being worked on in all BSD derived systems. Without this
handshaking (particularly pins 6, 8, and 20) your ports may appear
to be dead. This is because most of the tty driver for *BSD
systems require a Data Carrier Detect to be active before the
port will work.
For those folks that have hardware flow control working, you need
to look in the man page for 'stty' and look around for the
-clocal and -ctrcrts options.
Once the cable is set up, you will need to make sure that your
system is ready. The first thing you will need to do is make all
of the devices in the /dev/ directory. A program, called MAKEDEV,
is available in the /dev directory. Running this program with
the argument 'tty' will make all of the physical tty devices.
With that done, arranging for a 'getty' on the port is the next
order of business. You will need to edit the '/etc/ttys' file
and make one of the tty devices available. If you have
connected your terminal to DOS COM1, you will be enabling
/dev/tty00. Similarly, if you are connected to COM2:, you will
be enabling /dev/tty01 (see the pattern?). There are other
names for those ports as well, but when you are talking about
terminals, be sure to use the '/dev/tty*' names. If not, you
will be completely ignored and treated as an outcast because
you obviously have not done any of your homework.
One of the other common problems with the SIO driver is that
people will often disable all handshaking, and then complain
that they cannot get a reliable connection above 9600 baud.
Handshaking is the solution to most of these problems.
7.7 My network manager (or UUCP feed site admin) just informed me
that the way I have installed sendmail through my UUCP connection
and has caused a sendmail loop. Can you help me get sendmail
installed correctly?
(1) Go into sendmail's source directory tree
cd /usr/src/usr.sbin/sendmail/cf/cf
(2) Make the missing obj directory first, you need it later...
mkdir obj
(3) Create a sendmail master configuration file (.mc file). Name
it yourname.mc
vi yourname.mc
(4) Contents of the yourname.mc file:
#---------------------------------------------------------------
divert(-1)
#
# This is the prototype for a site with only a uucp connection
# to the world, where smarthost and uucp relay are the same ...
# Replace "yourname" with your machines nodename without domain
# Replace "smarthost" with your uucp neighbours nodename without
# domain i.e. here is myname "knobel" and my smarthost is "gomel",
# to which I'm connected with uucp via dialup modem.
divert(-1)
VERSIONID(`yourname.mc 1.0')
include(`../m4/cf.m4')
OSTYPE(bsd4.4)
FEATURE(nodns)dnl
MAILER(local)dnl
MAILER(smtp)dnl
MAILER(uucp)dnl
define(`UUCP_MAX_SIZE', 2000000)dnl
define(`SMART_HOST', `uucp-dom:smarthost')dnl
define(`UUCP_RELAY', `uucp-dom:smarthost')dnl
#--------------------------------------------------------------
In the siteconfig directory (.../sendmail/cf/siteconfig)
create a file uucp.yourname
Put a list of machines into this file to which you have active
uucp/mail connection. Generally only the name of your smarthost
.... Unknown addresses are routed to your smarthost ....
siteconfig/uucp.yourname:
#----------------------------------------------------------------------
SITE(nodename_of_your_smarthost)
#----------------------------------------------------------------------
(5) create the new sendmail configuration file, which will be
stored under obj/yourname.cf, by typing
make yourname.cf
(6) After that copy obj/yourname.cf to /etc/sendmail.cf
(7) It's up to you to browse through the systems global aliases
file ((etc/aliases), where important mail aliases are stored.
After editing this file you should invoke the command newaliases
to update the corresponding database file
newaliases
(8) Then create/edit the file "/etc/sendmail.cw". This file
contains alias names of your system (a list of additional names
under that your system might receive e-mail):
yourname
yourname.uucp
yourname.domain
(9) Then create a file /etc/mailertable:
Here you have to say what else (uucp adresses, too)
has to be sent to your smarthost ...
.uucp uucp-uudom:name_of_your_uucp_smarthost
(10) Create the hash table the following way:
makemap hash /etc/mailertable.db < /etc/mailertable
Remember, if you make any changes you have to rebuild the
alaises database by typing:
newaliases
(11) BTW: You do not need to create a frozen config file,
since sendmail on FreeBSD 1.X and NetBSD aren't compiled with
that option turned on.
(12) ``Hot files'' with more information (see sendmail src tree):
FAQ KNOWNBUGS RELEASE_NOTES cf/README
7.8 Can network attached assets be used by/from NetBSD? FreeBSD?
OpenBSD?
Yes, they can, assuming the machine at the other end of the
connections is reasonably cooperative. The specifics are up to
the remote machine, but a couple of things that you can start
looking for that will help are provided below:
- Ask the system administrator of the machine in
question if it is OK for you to use whatever it is
you need. This is more a matter of manners than a
technical issue.
- For NFS mounted disk drives, make sure that you are
not prevented from using the assets by the
/etc/exports (or equivalent) file. This goes for
CD-ROMs as well as regular mounted disks.
- There are a completely different set of concerns for
tapes and printers. Each system implements these in
slightly different ways. Check with your system
manager or documentation for more information.
- Diskless booting is possible for all three systems,
for a little more detail, see below.
Note that not all network clients are created equal. There may
be semantic differences between what you EXPECT to happen and
what actually happens. Your best bet at that point is to get
with the local system manager and talk to him or her about what
you should be expecting on the system and what is actually
happening. An excellent example is the semantics of file group
accounts when a new file is created on an NFS machine. The
semantics of the create will be based on the OS on the SERVER,
so it will be whatever SysV or Sun thinks is correct, not what
we expect from the BSD side.
There is a package available which can also be used by *BSD
which will allow your machine to be visible to LanManager or
Windows NT clients. The package is called 'SAMBA' and includes
information about how to configure the package to work with
NetBSD, OpenBSD, and FreeBSD. Works good for me.
7.8.1 Is it possible to Network boot a NetBSD machine from a network
on a diskless Sparc?
Yes, it's even more than possible, it actually works! Since
OpenBSD tracks NetBSD closely, it is also possible to do this
with OpenBSD.
Anders Magnusson (ragge@ludd.luth.se) has run it on diskless
SLCs, and the only problem they had was when the machine got
heavily loaded it ran out of mbufs (also sometimes a problem for
regular systems). It is reportedly faster than SunOS4 as long
there was lots of free memory in the machine. The fix for the
'running out of mbufs' problem is covered in section ....
For the most part, setting up a diskless client is fairly
straightforward. The FreeBSD diskless FAQ gives step by step
instructions for setting up bootp and the other programs that
need to be configured.
7.8.2 I have been working with FreeBSD 1.5.1 with some machines
configured as diskless. How can I do the same for 2.0R (i.e.,
Which are the magic words to put in the Kernel configuration
file?)
In FreeBSD, there is a file called Diskless.FAQ in the
usr/share/FAQ directory. It describes the procedures for
diskless booting of an i386 on FreeBSD.
Please note that netboot.[cr]om programs from FreeBSD 1.1.5.1
do not work with 2.0 and vice versa.
Note that this is just a pointer to the Diskless FAQ. You can
get the file from ftp.freebsd.org.
--
Dave Burgess (The man of a thousand E-Mail addresses)
*bsd FAQ Maintainer / SysAdmin for the NetBSD system in my spare bedroom
"Just because something is stupid doesn't mean there isn't someone that
doesn't want to do it...."