Linux-Networking Digest #675, Volume #11 Sat, 26 Jun 99 04:13:34 EDT
Contents:
Re: 10BASE-T NIC and 100mbps NIC to a dual-speed hub doesn't work? (Rod Smith)
Re: Cisco 675 question (Dang H. Nguyen)
Replacing DSU/CSU (Tracy Johns)
Re: Need list for LAN ("H. L. Shepard")
Re: Cisco 675 question
new Linux portal site - for professional Linux developers (dan braun)
Re: DSL Internet (Thomas Kochak)
Re: reverse name lookup - how 2 in linux?? (Jose Romeo Vela)
Re: What are these "Something Wicked happened!" messages ("Bob Taylor")
Re: RH 6.0 ftp: How make it receive? ("Andrey Smirnov")
Re: Why not C++ (Andi Kleen)
Re: samba and fstab. ("Andrey Smirnov")
Firewall and services (Corinna Esmeralda Schultz)
Changing default WU-FTPD port (Thomas Hopson)
Re: DSL Internet ("Andrey Smirnov")
Win98 SE broke my internet access through linux gateway ("Eric Peterson")
----------------------------------------------------------------------------
From: [EMAIL PROTECTED] (Rod Smith)
Subject: Re: 10BASE-T NIC and 100mbps NIC to a dual-speed hub doesn't work?
Date: Sat, 26 Jun 1999 03:06:18 GMT
Reply-To: [EMAIL PROTECTED]
In article <7kv4sf$9ih$[EMAIL PROTECTED]>,
Todd Knarr <[EMAIL PROTECTED]> writes:
> Mark Price <[EMAIL PROTECTED]> wrote:
>> In order to have a combination of the both, you would need a switch. A
>> switch provides the circuitry to buffer traffic coming in on a 100Mb
>> port before forwarding it to a 10Mb port. A hub does not provide this.
>
> Depends on the model of hub. The NetGear DS104 hub ( and the equivalent
> 6-, 8- and 16-port models ) is a 10/100 per-port hub that allows
> mixing of 10-megabit and 100-megabit NICs on the hub without any
> problems.
I'm interested in finding out more about the features and capabilities of
hubs and switches -- not so much specific brand recommendations as just
general information that could be used to evaluate them in the future. Is
there a FAQ on this topic, or a section of some other FAQ devoted to it?
A manufacturer's web site with more than smokescreen marketing babble?
--
Rod Smith
[EMAIL PROTECTED]
http://www.channel1.com/users/rodsmith
NOTE: Remove the "uce" word from my address to mail me
Author of _Special Edition Using WordPerfect for Linux_, from Que;
see http://www.channel1.com/users/rodsmith/books.html
------------------------------
From: [EMAIL PROTECTED] (Dang H. Nguyen)
Subject: Re: Cisco 675 question
Reply-To: [EMAIL PROTECTED]
Date: Sat, 26 Jun 1999 06:00:22 GMT
On 26 Jun 1999 04:19:43 GMT, [EMAIL PROTECTED] () wrote:
>On Thu, 24 Jun 1999 11:43:17 -0500, Richi <[EMAIL PROTECTED]> wrote:
>>can use bridging with Linux with the router connected to the ethernet card
>>in the Linux box ?
>
>i use bridging mode for adsl. originally i had one ethernet card.
>the 675 was connected to it via cat 5 cable. the linux machine ran
>a dhcp client (dhcpcd) to get the ip address from the isp.
>note i did not give eth0 an ip address. i didn't have to modify routing
>tables either.
>my current setup is now - dhcpcd runs for eth0, router's cable is plugged
>directly into eth0. eth1 has 192.168.1.x address. the windows machine
>uses my box as the default gateway, and we use the same nameservers (from
>the isp, most likely). the windows box also has a 192.168.1.x address.
>i have masquerading enabled on the linux box, and the appropriate
>ipchains rules.
The Cisco 675 basically has two modes. Bridging and PPP. In bridging
mode the router is transparent and forwards packets from eth0 -->
wan0-x without care, meaning it will forward anything. In PPP mode,
the router gets a real IP address, either through DHCP or statically
assigned, and then through NAT it will forward packets base on a set
of rule.
Actually if your ISP supports it, use the Cisco 675 in PPP mode. This
way you can turn on NAT and have the 675 does the job that your
current Linux IP-masq box does. NAT on the 675 is pretty good, even
better than IP-Masquerading.
Even better, in PPP mode, you can setup the router to do IP filtering.
It's sort of like ipchains and ipfwadm but only a little more
primitive. That should secure your network from most intrusion though.
>>
>>When I read that ping,trace, telnet and web interface is disabled in bridge
>>mode, I assumed that I could not use any of the above functions through it.
>>Obviously I want to be able to telnet and ping other places. If I understand
>>you correctly, these functions can not used internally on the router ???
>>But, will still be able to ping.microsoft.com and telnet other sites on the
>>web?
>i have not experienced any loss of ping, telnet, etc. functionality
>with bridging mode. as the other poster indicated, you cannot telnet,
>ping, http to the router, because it does not have an ip address.
>you may or may not have a real ip address on eth0. i have had two isps for adsl.
>the first one filtered all of my ports, and the ip address given
>me was the ip address of the firewall :(
>i think most isps will probably assign you an address,
>which means that you are responsible for your own firewall.
>and you can telnet into your box.
>>
>>In netcfg do you have to add anything to the routing area, or is all your
>>settings contained in the eth0 configuration area ? I read somewhere that
>>when using NAT the router has an IP of 10.0.0.x. Does this sound right and
>>do I need to add this to my routing area.
The eth0 port of the router can have any IP address you want it to
have. I have mine setup to 192.168.100.1. The wan0-0 port however will
have a real IP address from your ISP.
>10.0.0.x is a range assigned for private networks. 192.168.1.x also works.
>others are also private.
>hope this helps
>mullein
------------------------------
From: Tracy Johns <[EMAIL PROTECTED]>
Subject: Replacing DSU/CSU
Date: Fri, 25 Jun 1999 21:02:37 -0600
Reply-To: [EMAIL PROTECTED]
Hi all,
I am slowly becoming communication literate. Can someone tell me if
there is a way to replace a DSU/CSU unit with a modem or terminal
adapter on a T1 line? I am trying to help a client who has a T1 line,
and wants to save money by not having to buy equipment that may be able
to be integrated into a modem (for example).
Thanks in advance,
Tracy Johns
------------------------------
Date: Fri, 25 Jun 1999 20:52:11 -0700
From: "H. L. Shepard" <[EMAIL PROTECTED]>
Subject: Re: Need list for LAN
I use our nine planets and their moons.
Not easy to remember, but there are enough names!
I have to leave Uranus out. My network is in a classroom.
Joe O'Connell wrote:
> I'm setting up a 15-node LAN (which has to have room to grow to 25 or so),
> and I'm looking for some "theme" to name each node. Here is a list of the
> themes being considered so far:
>
> colors (red, blue, green)
> cigars (padron, macanudo, cohiba)
> composers (bach, brahms, wagner)
> artists (degas, picasso, renoir)
> writers (falkner, hemmingway, joyce)
> poets (shelley, burns, shakespeare)
> countries (mexico, iran, armenia)
> US states (nebraska, alabama, oregon)
> world cities (paris, london, rio)
> US state capitals (sacramento, albany, atlanta)
> rivers (amazon, nile, yukon)
> soft drinks (coke, pepsi, sprite)
> US beer (coors, miller, bud)
> clothes (hat, shoe, shirt)
>
> I'm trying to find a theme that is CREATIVE, FUN, EASY (to spell and
> remember), and there must be at least 20 names available. Any ideas?
> Thanks
------------------------------
From: [EMAIL PROTECTED] ()
Subject: Re: Cisco 675 question
Date: 26 Jun 1999 04:19:43 GMT
On Thu, 24 Jun 1999 11:43:17 -0500, Richi <[EMAIL PROTECTED]> wrote:
>can use bridging with Linux with the router connected to the ethernet card
>in the Linux box ?
i use bridging mode for adsl. originally i had one ethernet card.
the 675 was connected to it via cat 5 cable. the linux machine ran
a dhcp client (dhcpcd) to get the ip address from the isp.
note i did not give eth0 an ip address. i didn't have to modify routing
tables either.
my current setup is now - dhcpcd runs for eth0, router's cable is plugged
directly into eth0. eth1 has 192.168.1.x address. the windows machine
uses my box as the default gateway, and we use the same nameservers (from
the isp, most likely). the windows box also has a 192.168.1.x address.
i have masquerading enabled on the linux box, and the appropriate
ipchains rules.
>
>When I read that ping,trace, telnet and web interface is disabled in bridge
>mode, I assumed that I could not use any of the above functions through it.
>Obviously I want to be able to telnet and ping other places. If I understand
>you correctly, these functions can not used internally on the router ???
>But, will still be able to ping.microsoft.com and telnet other sites on the
>web?
i have not experienced any loss of ping, telnet, etc. functionality
with bridging mode. as the other poster indicated, you cannot telnet,
ping, http to the router, because it does not have an ip address.
you may or may not have a real ip address on eth0. i have had two isps for adsl.
the first one filtered all of my ports, and the ip address given
me was the ip address of the firewall :(
i think most isps will probably assign you an address,
which means that you are responsible for your own firewall.
and you can telnet into your box.
>
>In netcfg do you have to add anything to the routing area, or is all your
>settings contained in the eth0 configuration area ? I read somewhere that
>when using NAT the router has an IP of 10.0.0.x. Does this sound right and
>do I need to add this to my routing area.
10.0.0.x is a range assigned for private networks. 192.168.1.x also works.
others are also private.
hope this helps
mullein
------------------------------
From: dan braun <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.advocacy,comp.os.development.system,comp.os.linux.setup,comp.os.linux.misc,comp.os.linux.hardware
Subject: new Linux portal site - for professional Linux developers
Date: Sat, 26 Jun 1999 00:40:03 -0400
Reply-To: [EMAIL PROTECTED]
For Immediate Release PegaSoft Canada
LINCOLN, ON - June 26, 1999 - Linux, the fastest rising computer
operating system for business and the Internet, has 10 million users and
growing faster than Window NT. Major computer companies, including IBM,
Compaq, Oracle, Netscape and Corel, have Linux editions of their
products or have announced releases in the next few months.
PegaSoft is pleased to announce the opening of a new Linux portal site
designed specifically for professional Linux developers. The portal is
located at
http://www.vaxxine.com/pegasoft/portal
The PegaSoft Portal contains hundreds of links to programmer-oriented
web sites, including development tools, reference sites, and locations
for free support. There are also a host of useful worldwide services
including:
* Official Linux news
* The "hired guns" job search board
* Auction room
* Chat room
* North American weather forecasts
* Linux site searching across the World Wide Web
* Start page customization, including the ability to choose "themes"
PegaSoft was disappointed in the current trends in Linux portals. These
sites tend to have low quality news and limited link coverage. PegaSoft
set out to design a fast loading site that would be truly useful to
developers, with official news, and a extensive selection of links.
About PegaSoft
>From its inception in 1990, PegaSoft has been a team-oriented company
dedicated to creating software that pushes the industry boundaries.
Reformed in 1996 to develop Linux software, PegaSoft continues to
produce products of technical excellence and performance. Our first
release is System Manager in a Box(, a Linux configuration and
administration tool that uses artificial intelligence. We believe that
powerful, quality software is not just wishful thinking, but a
responsibility. We continue to make your computer take flight.
PegaSoft Canada
2631 Honsberger Avenue
Jordan Station, ON
L0R 1S0
http://www.vaxxine.com/pegasoft / [EMAIL PROTECTED]
------------------------------
From: Thomas Kochak <[EMAIL PROTECTED]>
Subject: Re: DSL Internet
Date: Sat, 26 Jun 1999 00:03:48 -0500
Does the computer with that does the IP masquerading have to be always on?
Alex Lam wrote:
> Thomas Kochak wrote:
> >
> > Can anyone tell me how to get some info on setting up DSL in linux?
>
> Nothing special is needed. All you need is call whoever is providing
> your xDSL/ISP
> connection, place your order.
>
> You need an ethernet card. Or two and a hub(if you want to share the DSL
> with other computers. You can skip the hub by using a cross over cable
> if you only have one box to share.) Get the ethernet card installed and
> detected properly (many ISP/DSL suppliers do not support Linux, just
> don't tell them.)
>
> When they come and install your DSL line, they should give you a DSL
> modem, (or they might told you to buy one when you place the order.)
> After the tech service guy finished the installation. You'll be given
> your connection info (IP, DNS, gateway, netmask) Then, you just log in
> as root,put those numbers into your network config file, save it. logout
> from root, Connect the RJ45 cable to your ethernet card. (the first one,
> the one ethe0, if you have more than one card.)
>
> That's it.
>
> If you want to share with other boxes, enable
> ipforewarding/ipmasquerading/ipchaining/whatever your distro calls it,
> put in 192.168.0.0 as the IP for the second card (ethe1) in the box
> that's connecting to the internet, and use the IP 192.168.0.1 for the
> ethernetcard for the second box...
> and so on, and so on if you want to add more boxes later.
>
> Alex Lam.
> --
> *** *** *** *** *** *** ***
> Remove all the upper case Xs from my email address if reply by e mail.
> **************************************************
------------------------------
From: Jose Romeo Vela <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.help,alt.os.linux
Subject: Re: reverse name lookup - how 2 in linux??
Date: Sat, 26 Jun 1999 00:54:58 -0400
Bob wrote:
> how do you get the system name from an ip address?
Bob, try this command:
nslookup <ip-address>
------------------------------
Reply-To: [EMAIL PROTECTED]
From: [EMAIL PROTECTED] ("Bob Taylor")
Subject: Re: What are these "Something Wicked happened!" messages
Date: Fri, 25 Jun 1999 23:47:34 -0700
In article <G9Vc3.61$[EMAIL PROTECTED]>,
"Mohamad Kaissi" <[EMAIL PROTECTED]> writes:
>
>
>> I'm using the 2.2.5 kernel that comes with RedHat 6.0 and everynow and
> then I
>> see a series of these messages:
>>
>> eth1: Something Wicked happened! 000a
> Sorry, have no clue what those mean, but just an FYI. I think that kernels
> that end with an odd number, like .5, are not stable. Try n' get a stable
> one and compile it.
In kernel sources 2.0.36:
[root@ann net]# grep "Something Wicked" *.c
tulip.c: printk(KERN_ERR "%s: Something Wicked
happened! %8.8x.\n",
via-rhine.c: printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
yellowfin.c: printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
2.2.5 IS a stable kernel. The development kernels are n.x.n where x is
odd.
--
+----------------------------------------------------------------+
| Bob Taylor Email: [EMAIL PROTECTED] |
|----------------------------------------------------------------|
| Gnome certainly is (serious competition to the Mac or Windows) |
| ... I get a charge out of seeing the X Window System work the |
| way we intended..." - Jim Gettys |
+----------------------------------------------------------------+
------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Subject: Re: RH 6.0 ftp: How make it receive?
Date: Sat, 26 Jun 1999 00:06:45 -0700
Hello,
When you use ftp to go from nt to linux, just use your login name and
password and you will be able to put files.
As far as going from linux to nt via ftp, yes you need some kind of ftp
server. You can install IIS, ftp is a part of a package, or you can install
some other ftp server to get ftp going.
Good luck!
john brookes wrote in message <[EMAIL PROTECTED]>...
>I have a NT box and linux box. I can get on NT and ftp connect OK. I
>can GET a file from linux, but cannot PUT (Upload) a file to linux.
>Thats the first question, how to turn on upload for linus ftp?
>
>Second question is I try to ftp from linux to NT: the connection is
>refused by NT. I read that you have to have IIS running to get ftp.
>???
>
>Thanks in advance,
>email also if possible...
>John B
>
------------------------------
From: Andi Kleen <[EMAIL PROTECTED]>
Crossposted-To: comp.os.linux.development.apps,comp.os.linux.development.system
Subject: Re: Why not C++
Date: 26 Jun 1999 06:53:38 +0200
[EMAIL PROTECTED] (Greg Comeau) writes:
> In article <7kscsl$s0h$[EMAIL PROTECTED]> [EMAIL PROTECTED] (Nathan Myers)
>writes:
> >Ralph Glebe <[EMAIL PROTECTED]> wrote:
> >> Are all the programs in C because: [speculation]
> >
> >There are quite a lot of C++ projects on Linux. C projects (still)
> >outnumber them for several reasons.
> >
> >1. C is an easier language to learn to use fully, so you may get
> > better participation on a C project because you're drawing on
> > a larger population.
>
> This is a nit, and one I believe Nathan will agree with, but IMO,
> it's not an easier language as much as it's perceived to be an
> easier language. I mean, sure, C syntax is definitely smaller than
> C++ syntax and such. But C programming involved more than just that
> since a C programmer still has to learn general techniques, etc.
> Also, even specific to C, I find the average C programmer does not
> know C well. Probably fair to say that they more or less know some
> subset enough to get by. Anyway, the bottom line is the C is popular
> and will remain so.
Well, the theory is that:
int f(vector<vector<float> > array)
is easier than
int f(float **array)
to handle for a beginner. The praxis is that what the C++ compiler
presents you as error message for a slight in template related
stuff is just horrible, and I wouldn't want to decipher that as
newbie[1].
-Andi
[1] This is mainly for egcs, I don't know if other C++ compilers
produce better template-related error messages.
--
This is like TV. I don't like TV.
------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Subject: Re: samba and fstab.
Date: Sat, 26 Jun 1999 00:09:52 -0700
In order to pause scrolling output use | more argument with your command:
Example: ls -l | more
Good luck!
castor wrote in message <7l1gf8$lu4$[EMAIL PROTECTED]>...
>Can someone please tell me how to mount Samba shares in /etc/fstab? Or fix
>the following problem?
>I have a script file which mounts some Windows 98 partitions with smbmount.
>If I put this file in my /etc/rc.d/boot.local, or even if I put the whole
>thing manually with full paths in there, it doesn't work. The thing scrolls
>off way too fast for me to read properly (can someone tell me how to pause?
>:). It says something about service not being available[?] This happens
>whether my Windows box has finished booting up or not. As soon as I log on
>and run the script, the partitions mount fine.
>
>Will the problem persist if I mount the partitions in fstab?
>
>-c.
>
>
>
------------------------------
From: [EMAIL PROTECTED] (Corinna Esmeralda Schultz)
Subject: Firewall and services
Date: 26 Jun 1999 07:12:42 GMT
I just want to say thanks for the help. In particular, the pointer to
the site rlz.ne.mediaone.net/linux/firewall was really helpful, even
better than the dotfile generator (at least for someone not that
familiar with the firewall setup process).
-Corinna Schultz
------------------------------
From: Thomas Hopson <[EMAIL PROTECTED]>
Subject: Changing default WU-FTPD port
Date: Sat, 26 Jun 1999 07:26:49 GMT
Is there an easy way to change the default port?
Thanx...
------------------------------
From: "Andrey Smirnov" <[EMAIL PROTECTED]>
Subject: Re: DSL Internet
Date: Sat, 26 Jun 1999 00:18:37 -0700
You CAN NOT use 192.168.0.0 as an IP address! It's network address.
Use 192.168.0.1 for your first address and 192.168.0.2 for the second.
Good luck!
Thomas Kochak wrote in message <[EMAIL PROTECTED]>...
>Does the computer with that does the IP masquerading have to be always on?
>
>Alex Lam wrote:
>
>> Thomas Kochak wrote:
>> >
>> > Can anyone tell me how to get some info on setting up DSL in linux?
>>
>> Nothing special is needed. All you need is call whoever is providing
>> your xDSL/ISP
>> connection, place your order.
>>
>> You need an ethernet card. Or two and a hub(if you want to share the DSL
>> with other computers. You can skip the hub by using a cross over cable
>> if you only have one box to share.) Get the ethernet card installed and
>> detected properly (many ISP/DSL suppliers do not support Linux, just
>> don't tell them.)
>>
>> When they come and install your DSL line, they should give you a DSL
>> modem, (or they might told you to buy one when you place the order.)
>> After the tech service guy finished the installation. You'll be given
>> your connection info (IP, DNS, gateway, netmask) Then, you just log in
>> as root,put those numbers into your network config file, save it. logout
>> from root, Connect the RJ45 cable to your ethernet card. (the first one,
>> the one ethe0, if you have more than one card.)
>>
>> That's it.
>>
>> If you want to share with other boxes, enable
>> ipforewarding/ipmasquerading/ipchaining/whatever your distro calls it,
>> put in 192.168.0.0 as the IP for the second card (ethe1) in the box
>> that's connecting to the internet, and use the IP 192.168.0.1 for the
>> ethernetcard for the second box...
>> and so on, and so on if you want to add more boxes later.
>>
>> Alex Lam.
>> --
>> *** *** *** *** *** *** ***
>> Remove all the upper case Xs from my email address if reply by e mail.
>> **************************************************
>
------------------------------
From: "Eric Peterson" <[EMAIL PROTECTED]>
Subject: Win98 SE broke my internet access through linux gateway
Date: Sat, 26 Jun 1999 02:33:16 -0500
I just upgraded 1 of my Win98 machines to Win98 SE (not this one, another .
. .)
Internet Explorer can no longer access the internet on that machine through
linux/diald gateway.
Any ideas where I should start looking?
------------------------------
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End of Linux-Networking Digest
******************************
