Linux-Networking Digest #695, Volume #11 Sun, 27 Jun 99 18:13:38 EDT
Contents:
Re: DSL filtering ports ("Andrey Smirnov")
Re: If I had a gun.... ("Andrey Smirnov")
Re: Setting Linux up as a proxy server ("Andrey Smirnov")
Re: Linux Server Win95 client (Claude Houle)
Re: Emulating a (telephone) modem via soundcard (Bill Unruh)
Network-level interrupts in Linux ("Vijay K. Gurbani")
Re: phoneline/wireless networking drivers ([EMAIL PROTECTED])
Re: If I had a gun.... ("James R. Barnett, Jr.")
Re: internet connection with Linux ([EMAIL PROTECTED])
Re: How to use NT Printer & files from Suse 6.1 (peter)
Re: Linux to Linux SLOW ?? ("Andrey Smirnov")
Re: Why not C++ (Johan Kullstam)
Re: Netscape / proxy q ("Bob Dole")
Re: IP address binding to interface device .. (Art Berggreen)
Re: Why not C++ (Johan Kullstam)
WinGate proxy server ([EMAIL PROTECTED])
DHCP: Help - Wrong router (Dirk Riebesell)
Re: AUI Fanouts for sale (ARCADIO)
----------------------------------------------------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Subject: Re: DSL filtering ports
Date: Sun, 27 Jun 1999 13:18:44 -0700
Hello,
I have PacBell DSL and similar setup as what you are talking about. It works
fine with ip_masquerading, also samba works fine within my network, I did
not try to share any smb shares with outside world, but I don't think you
would want to do that.
Good luck!
Scott Sweeting wrote in message <[EMAIL PROTECTED]>...
>I plan to set up a network of four workstation computers with a linux
>box as a gateway to a DSL connection. Since I only get one IP #, I want
>to use IP Masquerading so that all four workstations can get online.
>But, according to my DSL provider's web page:
>
>"Pacific Bell Internet Services filters out all non-IP protocols for DSL
>customers, however, this does not guarantee the security of your
>computer or LAN. If file and print sharing is not required on your
>computer or network, we recommend that you turn it off as a minimum
>security solution."
>
>What bothers me is the filtering of non-IP protocols. Does that mean
>that IP Masquerading won't work, or does it mean that things like SMB
>and the like won't be accessable from outside the LAN? Does anyone know
>about PacBell specifically?
>
>TIA, and please cc to email.
------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Subject: Re: If I had a gun....
Date: Sun, 27 Jun 1999 12:37:44 -0700
Can you post outputs of your ifconfig -a, netstat -rn, and contents of
/etc/hosts files, also ip configuration of your win client.
Good luck!
PS. Also output of arp -a from both linux and win machines.
James R. Barnett, Jr. wrote in message <[EMAIL PROTECTED]>...
>Okay, I am sure some of you have seen my posts in the past weeks. I am
>at my wits' end trying to set up a 2 machine network. Many of you have
>tried to help and I appreciate it, but nothing has worked so far. I have
>installed Win98 on both machines to ensure that the Ethernet Card,
>cables and hub were all functional. It worked in about 15 minutes. I
>bought the Book 'Linux Network Toolkit and followed the first two
>chapters exactly (which setup a Samba Server with windows client). I
>still cannot ping between the machines. The network cards went in fine
>during the Linux install. The modules loaded correctly with the
>autoprobe. cat proc/interrupts and cat proc/ioports both show the
>ethernet card is using the expected resources. ifconfig shows that eth0
>is up and running. My routing tables match exactly what is in the book.
>What on earth could I being doing wrong. If I didn't know better, I
>would think the hub didn't handle linux packets but I know that is
>ridiculous. Any one have any ideas? I am desperate and frustrated. I
>would be forever grateful to anyone who could help me get this working.
>Replies by email are more than welcome.
>
>JamesB
------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Crossposted-To: redhat.networking.general
Subject: Re: Setting Linux up as a proxy server
Date: Sun, 27 Jun 1999 13:14:20 -0700
Hello,
If you want to use more services from your private net, you need to lookt at
ip_masquerading on Linux:
ftp://ftp.rubyriver.com/pub/jhardin/masquerade/ip_masq_vpn.html#HOWTO
Good luck!
[EMAIL PROTECTED] wrote in message <7l42dr$9dk$[EMAIL PROTECTED]>...
>Hi.
>
> I am wanting to set up Redhat 6.0 as a proxy server to serve cross
>platform machines (Win9x, and WinNT) on my private network. I want all the
>machines to be able to use the cable modem which is hooked up to the linux
>box. I also want to be able to use everything on the net and not just http
>and ftp.
>
>Any help on what software to use or what I need to set up would be greatly
>appreciated
>
>
>Thanks
>Patrick
>
>------------------ Posted via SearchLinux ------------------
> http://www.searchlinux.com
------------------------------
From: Claude Houle <[EMAIL PROTECTED]>
Subject: Re: Linux Server Win95 client
Date: Sun, 27 Jun 1999 20:23:11 GMT
DAVID M MCNAMARA wrote:
> I have connected my linux box to the internet , now how do i connect my 95
> box to the linix box so they can share the internet connection i'm using red
> hat 5
David
With RedHat 5.X, you can use IP_MASQUERADE. The howto can be found in
/usr/doc/HOWTO/mini/IP-Masquerade
assuming you've installed most of the HOWTOs.
Here's an example of what I did:
I created a script called /etc/rc.d/rc.ip_masq containing the following:
#!/bin/sh
#
# /etc/rc.d/rc.ip_masq: IP Masquerading script.
#
echo "Starting IP-Masquerading..."
/sbin/modprobe ip_masq_ftp
/sbin/modprobe ip_masq_raudio
/sbin/modprobe ip_masq_irc
/sbin/modprobe ip_masq_quake
/sbin/modprobe ip_masq_vdolive
/sbin/modprobe ip_masq_cuseeme
/sbin/ipfwadm -F -p deny
/sbin/ipfwadm -F -a m -S 172.16.1.0/24 -D 0.0.0.0/0
/sbin/ipfwadm -F -a m -S 172.16.1.0/24 -W eth0
My 'gateway' Linux box has an IP address of 172.16.1.1 and my Win95 client has
172.16.1.10
I start /etc/rc.d/rc.ip_masq at the end of /etc/rc.d/rc.local so it's the last
thing that runs during bootup.
You'll also need to turn on 'Network Packet Forwarding (IPv4)'. You can do this
by running netcfg and then going to the 'Routing' tab. (I'm not sure how to
turn this on in linuxconf).
As far as your Win95 client is concerned, your DNS entries are still the ones
that your ISP assigned you, but your gateway is now, for example, 172.16.1.1
(the Linux box between Win95 and the Internet).
That's pretty much it...as far as I can remember.
However, you may want to upgrade to a newer kernel that supports IP_CHAINS. It
accomplishes the same thing that IP_MASQUERADING does, but with more options
and less security issues. IP_MASQUERADING, I believe, has been replaced by
IP_CHAINS in the newer kernels (2.2.x).
Have fun!
------------------------------
From: [EMAIL PROTECTED] (Bill Unruh)
Crossposted-To:
telekabel.linux,at.linux,inode.linux,com.os.linux.misc,ak.os.linux,ahn.tech.linux,alt.linux,alt.os.linux,alt.uu.comp.os.linux.questions,alt.uu.comp.os.linux,be.comp.os.linux,ch.comp.os.linux,chello.linux,cmu.comp.os.linux,comp.os.linux.help,comp.os.linuxmisc,es.comp.os.linux,fido.ger.linux,flensburg.linux,fi.os.linux.networking,fi.os.linux,ger.pc.linux
Subject: Re: Emulating a (telephone) modem via soundcard
Date: 27 Jun 1999 20:35:22 GMT
It probaly is, but why would you want to bother? It will be a massibe
programing job-- not only do you have to get the tones right, you will
then have to impliment all of the modem commands. I would estimate that
if you are a very good programmer, it will take you 6 months of solid
work. And for what purpose?
In <[EMAIL PROTECTED]> Szomraky Stefan <[EMAIL PROTECTED]> writes:
>Hi!
>Sorry for the repost and for the crosspost, but nobody could
>helped me, so i=B4ve to ask as many people I can ask....
>Is it possible with Linux to emulate a "normal" telephone modem via
>the soundcard?
>Please help me! I need it realy!
>Thank you
>PS: please contact me via e-mail, or post the answer in telekabel.linux =
>thank you....
------------------------------
From: "Vijay K. Gurbani" <[EMAIL PROTECTED]>
Subject: Network-level interrupts in Linux
Date: Sun, 27 Jun 1999 15:11:47 -0500
Reply-To: [EMAIL PROTECTED]
Hi:
I am doing some research on distributed messaging and would like to gain
some understanding of how network-level interrupts are handled by Linux;
specially interrupts when a message comes in.
Let's say I have a process P which is executing its compute loop. Let's
also say that it takes T time units for a process P to execute it's
compute loop on host H providing that no other messages came to H during
the compute loop.
Now, assume that the same process P is executing its compute loop on H
and other hosts on the network send messages destined to H. It seems
safe to assume that P will now take T+t time units to execute its
compute loop, t being the time the kernel spent in suspending P to
handle handling the interrupts of messages coming in to H.
My question is this: is there a way to quantize t? That is, is there
any way to know how much time a process was suspended because the kernel
had to handle an incoming message interrupt from the NIC? Does the
kernel, in fact, suspend a running process to service a NIC generated
interrupt?
If anyone can provide me some answers or pointers to the above
questions, I would appreciate it very much.
Thanks in advance. If there is sufficient interest, I will summarize.
- vijay
--
Vijay K. Gurbani [EMAIL PROTECTED]
Department of Computer Science and Applied Mathematics
Illinois Institute of Technology http://www.csam.iit.edu
Chicago, Illinois
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: phoneline/wireless networking drivers
Date: Sun, 27 Jun 1999 20:21:17 GMT
All these home networking product manufactureer are nuts. Do they
seriously think that Windows 95/98/NT users are more likely to network
their homes that Linux users? NT users perhaps,but 95/98 users? Give
me a break...give me a couple of solid Linux drivers and take my
money to your bank !!! &^%%!
Sandy
On Sat, 26 Jun 1999 00:23:00 GMT, [EMAIL PROTECTED] wrote:
>In article <376f1907.13805871@news-server>,
> [EMAIL PROTECTED] wrote:
>>
>> I also need to wire my Linux and NT boxes. Anyone knows how well
>> Diamond's HomeFree, Intel's Anypoint, and ActionTec ActionLink work in
>> a mixed host environement? Thanks...
>>
>> Neil
>>
>Hi Neil,
>
>The Actiontec PCI Home Network works in Windows 95, 98 and NT.
>It's Windows based and can not work in Linux. I heard from one
>of the Linux User Groups that someone at Actiontec is writing
>the Linux drivers for it.
>
>John
>
>
>Sent via Deja.com http://www.deja.com/
>Share what you know. Learn what you don't.
------------------------------
From: "James R. Barnett, Jr." <[EMAIL PROTECTED]>
Subject: Re: If I had a gun....
Date: Sun, 27 Jun 1999 15:49:49 -0500
Andrey Smirnov wrote:
>
> Can you post outputs of your ifconfig -a, netstat -rn, and contents of
> /etc/hosts files, also ip configuration of your win client.
>
> Good luck!
>
> PS. Also output of arp -a from both linux and win machines.
>
script started on Sun Jun 27 15:23:23 1999
[root@arson /root]# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt
Iface
192.168.1.254 0.0.0.0 255.255.255.255 UH 0 0 0
eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0
eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0
lo
[root@arson /root]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:10:5A:0B:50:2F
inet addr:192.168.1.254 Bcast:192.168.1.255
Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:65 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:10 Base address:0x300
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
[root@arson /root]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain
192.168.1.254 arson.toughguys.org arson
192.168.1.2 tireiron.toughguys.org tireiron
[root@arson /root]# arp -a
[root@arson /root]# arp -v
Entries: 0 Skipped: 0 Found: 0
[root@arson /root]# exit
exit
Script done on Sun Jun 27 15:24:31 1999
The win98 box is as follows:
C:\arp -a
No ARP Entries Found
C:\type C:\windows\hosts.sam
127.0.0.1 localhost
192.168.1.2 tireiron.toughguys.org
192.168.1.254 arson.toughguys.org
Network Properties shows the 3Com3c509b is installed without a problem.
Client for Microsoft Networks is installed and so is TCP/IP.
IP Address:
IP (static): 192.168.1.2
Subnet Mask: 255.255.255.0
DNS Configuration:
Enable DNS: TRUE
Host: tireiron
Domain: toughguys.org
DNS Server Search Order:
192.168.1.254
//I can't ping with DNS disabled either. Arson is not currently running
bind.
I realize all these settings might not be correct for Samba, but I know
I have to be able to ping before Samba can run. Pinging is my main
concern here. Well, Thanks for any and all help anyone can give me.
JamesB
------------------------------
From: [EMAIL PROTECTED]
Crossposted-To: comp.os.linux.misc,comp.os.linux.setup
Subject: Re: internet connection with Linux
Date: Sun, 27 Jun 1999 20:36:24 GMT
Can you ping IP addresses? It might just be a problem with the DNS
settings.
Eric
In article <7l5u50$s$[EMAIL PROTECTED]>,
Brutus <[EMAIL PROTECTED]> wrote:
> I'm using Open Linux 2.2 with KDE and I'm running kppp to get
connected to
> my ISP. I'm able to get a connection through kppp but none of my
> applications seem to be able to find it. Netscape comes back with an
error
> saying that the internet server is not found, telnet also can't find
a
> connection. Does anyone have any suggestions?
> thanks
>
> ------------------ Posted via SearchLinux ------------------
> http://www.searchlinux.com
>
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
------------------------------
From: [EMAIL PROTECTED] (peter)
Subject: Re: How to use NT Printer & files from Suse 6.1
Date: Sun, 27 Jun 1999 20:32:29 GMT
In article <7l5gk9$pds$[EMAIL PROTECTED]>, [EMAIL PROTECTED] told us...
> I've compiled the kernel with SMB support built in, played around with
> Samba, read a few how-to files and got nowhere. Most of the
> documentation assumes I want Linux to be a server.
>
> Can someone please point me to some useful instructions at the level of
> "What do I set to TCP/IP addresses and sub masks to?" as all the help
> I've read so far assumes I know things like this. I have got the NT
> machine to talk to other NT machines over a TCP/IP network (I just made
> up the addresses).
>
> What diagnostic tools are available beyond the Network Sniffer which I
> have tried to tell me how much success I am having and what I need to
> change if not?
>
first:
set up the networkcard on your machine and assign it a ip-adress, netmask ...
read the ethernet-howto how to do it.
second:
test the network: ping the nt-machine ...
third:
install samba on linux-side, create your personal smb.conf and start samba
look for instructions at:
http://www.germanynet.de/teilnehmer/101/69082/samba.html
http://www.bibsyst.no/samba/docs/FAQ/
a detailed description based on your spare information would fill a book and
make me earn a lot of money ;)
peter
=================
pilsl@
ANTISPAM
goldfisch.atat.at
------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Subject: Re: Linux to Linux SLOW ??
Date: Sun, 27 Jun 1999 13:23:21 -0700
What are default gateways on your linux machines?
Barnaby DiAnni wrote in message <[EMAIL PROTECTED]>...
>Hello,
>I have been puzzling over this for a few days
>and I was hoping for solution from the group.
>
>Please select a fixed width font to make
>sense of this :)
>
>!-----------------------+---------------------
>! Cable Modem
>! |
>! +--------+--------+
>! | 10Mbps HUB |
>! | Netgear EN104 |
>! +--+-----------+--+
>! | |
>! +----------+ +----------+
>! | |
>! +----+----+ +-----------------+ +----+----+
>! | eth0 | | | | eth0 |
>! |Linux Box| | 100Mbps HUB | |Linux Box|
>! | eth1 +--+ Netgear DS108 +--+eth1 |
>! +---------+ | | +---------+
>! +--------+--------+
>! |
>! +--------+--------+
>! | Windows 98 |
>! +--------+--------+
>!-----------------------+-----------------------
>
>Both Linux Boxes are multihomed.
>All eth1 links lights show a 100Mbps connection.
>FTP puts and get from Win 98 to both Linux Boxes
>are about 2400 Kbytes per second or faster.
>
>FTP puts and gets between the Linux boxes are about
>200 Kbytes per second??
>
>RX and TX activity is really on the 100Mbps hub.
>
>Here is a session from Win98 to one of the Linux boxes.
>
>ftp> bin
>200 Type set to I.
>ftp> get ie5win95.zip
>200 PORT command successful.
>150 Opening BINARY mode data connection for ie5win95.zip (25654086
>bytes).
>226 Transfer complete.
>ftp: 25654086 bytes received in 10.49Seconds 2445.58Kbytes/sec.
>ftp> put ie5win95.zip
>200 PORT command successful.
>150 Opening BINARY mode data connection for ie5win95.zip.
>226 Transfer complete.
>ftp: 25654086 bytes sent in 5.82Seconds 4407.92Kbytes/sec.
>ftp>
>
>
>Anyone have an idea what I'm doing wrong here?
>
>Thanks,
>
>Barnaby
>
>
------------------------------
Crossposted-To: comp.os.linux.development.apps,comp.os.linux.development.system
Subject: Re: Why not C++
From: Johan Kullstam <[EMAIL PROTECTED]>
Date: 27 Jun 1999 17:36:35 -0400
[EMAIL PROTECTED] (Bruce Hoult) writes:
> In article <[EMAIL PROTECTED]>, Johan Kullstam
> <[EMAIL PROTECTED]> wrote:
>
> > [EMAIL PROTECTED] (Nathan Myers) writes:
> >
> > > Thomas Steffen <[EMAIL PROTECTED]> wrote:
> > > > C++ might not be a very elegant language, but it is
> > > >fast, at least compared to other OO languages.
> > >
> > > Its syntax isn't very elegant, but where did that come from?
> > > It's fast compared to _any_ language, period. People who say
> > > it's slower than (e.g.) C are just spreading FUD.
> >
> > C++ *is* slower than C. not by orders of magnitude or even a factor
> > of two, but if you feed code to both C and C++ compilers, the C
> > compiler will optimize harder and generally make a better product.
> > this is because C is more mature and that C++ code is potentially more
> > complex which causes a more conservative compile.
>
> I'd love to see an example of this.
>
> Given...
>
> 1) code that is both valid C and valid C++, and
> 2) a C++ compiler that compiles to C (e.g. AT&T CFront)
>
> ... you will end up with identical machine code, no matter whether you
> compile with the C compiler, or compile with the C++ compiler (using the
> same C compiler as the back end).
>
> You may be able to find some particular C++ compiler that produces worse
> code compiling a C program than some particular C compiler, but that is a
> function of the compiler, not the language.
>
>
> > on the other hand, common-lisps like CMUCL can acheive near C or
> > fortran execution speed. speed is not exclusively the domain of the
> > C-like languages.
>
> I agree. The biggest problem with this is that Common Lisp is limited by
> things such as the lack of type (and other) declarations which would
> otherwise allow the compiler to generate even better code in many
> situations.
this is simply not true. lisp *has* types. lisp *has* type
declarations. just because the langauage doesn't require explicitly
declaring them everywhere doesn't mean it will not let you specify
type and optimize accordingly.
<URL:http://www.mindspring.com/~rtoy/software/cmu-user/index.html>
look at chapter 5 especially.
for example, in 5.13.3 we have this little fuction
(defun eff-note (x y z)
(declare (type (unsigned-byte 18) x y z))
(+ x y z))
see how the types really are defined. the compiler will optimize this
heavily.
> Dylan is much like Lisp, but has (optional) declarations of all
> sorts of things to aid program correctness and compiler
> optomisation. CMU Dylan (aka Gwydion Dylan, aka d2c) does the same
> sort of optomisations as CMUCL, and more.
dylan is a lisp variant with infix syntax. however, the syntax of
dylan makes macros difficult. that is why i like common lisp.
--
J o h a n K u l l s t a m
[[EMAIL PROTECTED]]
Don't Fear the Penguin!
------------------------------
From: "Bob Dole" <[EMAIL PROTECTED]>
Crossposted-To: alt.os.linux,comp.os.linux.setup,comp.os.linux.questions
Subject: Re: Netscape / proxy q
Date: Sun, 27 Jun 1999 17:15:45 -0400
Need to set permissions on the MS Proxy Server. explicitly set WWW to your
username. Also need Samba to login to the domain. Once you get file
sharing up, the proxy is a cinch.
David Eno <[EMAIL PROTECTED]> wrote in message
news:TMQ73.1997$[EMAIL PROTECTED]...
> I'm trying to run Netscape on a Red Hat 5.2 box that's connected to our NT
4
> network running MS Proxy v 1.
>
> I set the obvious proxy settings in Netscape. When I try to go to a site,
> the messages '(site) contacted. Waithing for reply' and 'connecting to
> (proxy IP)' flash back and forth repeatedly at the bottom the the screen.
>
> Anyone have any idea what the problem might be?
>
> TIA
> --
> Dave E.
>
>
------------------------------
From: Art Berggreen <[EMAIL PROTECTED]>
Crossposted-To: comp.protocols.tcp-ip
Subject: Re: IP address binding to interface device ..
Date: Sun, 27 Jun 1999 12:50:14 -0700
shyam wrote:
>
> Hello,
>
> Thanks for the pointer.
> However my comments are marked by <SS>
>
> Chandrashekhar a �crit:
>
> > shyam wrote:
> > >
> > > Hello,
> > > I am trying to understand why does the internet address bind to the
> > > interface in IP suite of protocols. In my limited knowledge , other
> > > protocols do not have this limitation.
> > How else will you identify a device on the network? Ultimately, a packet
> > is sent to a destination by mapping the IP address to the interface
> > address, in the last lap of its journey. Which other protocols are you
> > referring to.
> >
>
> <SS> IMHO we need to identify the machine to the network , not the different
> interfaces that the machine has. For example if the system had 2 ethernets ,
> I could designate that the machine's address is x.y.z.a rather than to the
> different interfaces ( a.b.c.d to eth0 and u.v.w.x to eth1 ). From my
> understanding of DECnet ( of course it uses its own routing protocol ), it
> supports a mechanism that the address is the machine's not the interfaces.
> This way if a single machine has multiple interfaces , it is able to provide
> multiple paths and also can perform load balancing.
>
> > > For eg., in a machine with dual ethernets , it is imperative that they
> > > have different ip addresses. Thus , you cannot have load sharing or
> > > failover capabilities between the connected machines in spite of the
> > > having more than one physical network.
> > Sorry - but do you mean more than one interface card for a device??
> > Failover capabilities are provided by a product called MC-Service Guard.
> > And I'm sure there are many more.
>
> <SS> Yes , more than one interface card per machine. Sorry I have not been
> clear enough. But, what I mean is for eg, 2 ethernet devices ( eth0, eth1
> active ) in one system ( physically these could be on one card or on multiple
> cards ). I will check out MC-Gaurd, but the systems that I have seen provide
> an IP failover capability, for eg., if by some detection mechanism you find
> that eth0 failed , you now disable eth0 through some scripts and activate
> eth1 with the same ip address that eth0 had. But this mechanism does not
> provide for load balancing.
>
> Thanks & Cheers !
> shyam
>
> > hth,
> > Chandru
> >
> > --
> > Ericsson Systems Expertise Ltd., Athlone, Ireland.
> > Tel: +353 902 31816
The TCP/IP protocols developed such that the networks were the things
that carried all the addresses. This is probably largely because the
grandfather of the Internet was the ARPANET. The ARPANET was an
intelligent network made of computer based switches and host computers
were addressed in terms of which port on which switch (first called
IMPs, later PSNs) they were connected. Thus in IP, one routes first to
a destination (sub)network, then to a particular port on that IP net.
DECNET-IV on the other hand was totally node centric, and the
interconnecting links themselves did not carry addresses. In DECNET you
route toward a node using an appropriate link. To contain the size of
the routing table, groups of nodes were defined as "areas". Routing is
first done by "level-2" routers to get to the right area, then routed to
the node. In Xerox XNS and its derivitive Novell IPX, nodes were
orignally given a single node address, but the network links were also
numbered with network numbers used for routing. IMHO the IP model
scales better (especially with the development of CIDR) because the
networks tend to evolve in natural hierarchies.
Art Berggreen
ARPANET veteran
Ericsson Datacomm Networks and IP Services
Access Product Unit
Santa Barbara, CA, USA
------------------------------
Crossposted-To: comp.os.linux.development.apps,comp.os.linux.development.system
Subject: Re: Why not C++
From: Johan Kullstam <[EMAIL PROTECTED]>
Date: 27 Jun 1999 17:42:53 -0400
[EMAIL PROTECTED] (Nathan Myers) writes:
> Johan Kullstam <[EMAIL PROTECTED]> wrote:
> >the memory fragmentation problem pretty much precludes seriously using
> >C++ for kernel work. look to microsoft for examples of C++ in action.
> Nazis eat peanut butter. Therefore peanut butter is bad.
thanks for trying godwin's law.
> This supposed "memory fragmentation problem" is just more FUD.
> Shame on you, Johan.
no, this one really *is* *true*. if you malloc and free a lot of
things of different sizes, then heap memory does get chopped up. there
are little bits of free memory here and there. you cannot consolidate
them. and when allocating you search around for these free holes.
the typical C++ program does a lot of malloc and free. memory
fragmentation does occur and it does cause performance loss.
--
J o h a n K u l l s t a m
[[EMAIL PROTECTED]]
Don't Fear the Penguin!
------------------------------
From: [EMAIL PROTECTED]
Subject: WinGate proxy server
Date: Sun, 27 Jun 1999 20:55:45 GMT
I have a small network consisting of mainly windows machines,
One win98 box runs WinGate, a proxy server.
I can access the internet useing netscape (set up access proxy server)
on the linux box, how ever i can't use things such as ping, telnet etc.
Pls. advise upon setting up the gateway so that the linux box will go
through wingate all the time.
Thanks for any help, Pls. reply to [EMAIL PROTECTED]
Kev
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.
------------------------------
From: Dirk Riebesell <[EMAIL PROTECTED]>
Subject: DHCP: Help - Wrong router
Date: Sat, 26 Jun 1999 17:23:37 +0200
Reply-To: [EMAIL PROTECTED]
Hi all,
I have an DHCP Server running under my SuSE-Linux 6.1 Box. This PC is
also my IP-Masquerading standard Gateway to access the Internet from my
Intranet.
when I set the "option routers 192.168.0.2;" in the /etc/dhcpd.conf. The
IP-Standard-Gateway-value on all Clients is wrong. The Standard Gateway
on all DHCP-Clients is the DHCP_IP_address given to the client and not
192.168.0.2.
for example:
Client IP: 192.168.0.100 (correct)
DNS: 192.168.0.2 (correct)
Standard Gatew.:192.168.0.100 (ERROR!!!!)
should be .2
does any body know why this fails
------------------------------
From: ARCADIO <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.ms-windows.networking.misc,comp.os.ms-windows.networking.ras,comp.os.ms-windows.networking.tcp-ip,comp.os.ms-windows.networking.win95,comp.os.ms-windows.networking.windows,comp.os.ms-windows.nt.admin.networking,comp
Subject: Re: AUI Fanouts for sale
Date: Sun, 27 Jun 1999 22:05:42 +0200
==============99CE3C6015B7CAD6D9DCB56E
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
????
Nick escribi�:
> If you are in need of a 4 port AUI fanout, then go to:
> http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=117878498
>
> ANy quiestions email to [EMAIL PROTECTED]
==============99CE3C6015B7CAD6D9DCB56E
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: 7bit
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
????
<p>Nick escribió:
<blockquote TYPE=CITE>If you are in need of a 4 port AUI fanout, then go
to:
<br><a
href="http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=117878498">http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=117878498</a>
<p>ANy quiestions email to [EMAIL PROTECTED]</blockquote>
</html>
==============99CE3C6015B7CAD6D9DCB56E==
------------------------------
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