Re: Adding wireless to an existing network

2005-06-18 Thread Orna Agmon
On Thu, 16 Jun 2005, david wrote:

> Date: Thu, 16 Jun 2005 20:29:37
> From: david <[EMAIL PROTECTED]>
> To: linux-il@linux.org.il
> Subject: Adding wireless to an existing network
>
> This maybe somewhat off topic.  I have a wired LAN with a Linux box
> that connects to the Internet using an ADSL line.  The Linux box provides NAT,
> masquerading and a firewall, allowing the other machines on the network
> to access the internet.  The other machines are connected to the network via
> a hub.  I would now like to add wireless access to the network.
>
> Can someone tell me what I need in order to add wireless access without 
> affecting
> the existing wired network?  Ideally I would like to have a device that I can 
> just
> plug in to the hub.  When I spoke to a salesman he said that I couldn't 
> connect
> an access point directly into the hub since it is expecting a router.  Also, 
> the wireless
> routers require that you have the internet connection going directly into 
> them.
>
> Can someone give me a definitive answer?

You can have one of the computers act as a router. The wireless connection
will depend then on the hard connection, and on the activity of the chosen
computer.

You will need an extra network card for that computer.

Orna.
--
Orna Agmon http://ladypine.org/  http://haifux.org/~ladypine/
ICQ: 348759096


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Re: Adding wireless to an existing network

2005-06-18 Thread Peter


On Sat, 18 Jun 2005, Orna Agmon wrote:


You will need an extra network card for that computer.


He can use a second ip net on the internal netcard of the nat router. 
The wireless access point has settings for running as a bridge. That is 
what you need.


Peter

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Re: Adding wireless to an existing network

2005-06-18 Thread Moish

Orna Agmon wrote:

On Thu, 16 Jun 2005, david wrote:

[..]


This maybe somewhat off topic.  I have a wired LAN with a Linux box
that connects to the Internet using an ADSL line.  The Linux box provides NAT,
masquerading and a firewall, allowing the other machines on the network
to access the internet.  The other machines are connected to the network via
a hub.  I would now like to add wireless access to the network.

Can someone tell me what I need in order to add wireless access without 
affecting
the existing wired network?  Ideally I would like to have a device that I can 
just
plug in to the hub.  When I spoke to a salesman he said that I couldn't connect
an access point directly into the hub since it is expecting a router.  Also, 
the wireless
routers require that you have the internet connection going directly into them.

Can someone give me a definitive answer?



You can have one of the computers act as a router. The wireless connection
will depend then on the hard connection, and on the activity of the chosen
computer.

You will need an extra network card for that computer.

Orna.
--
Orna Agmon http://ladypine.org/  http://haifux.org/~ladypine/
ICQ: 348759096


[]
Technically, if you're not bothered by security issues, then just plug 
the access point to your hub and that's it. ( well, you should at least 
define a list of MACs allowed to connect and/or encryption policy).
A much better solution is to use IPCOP or similar FOSS products which 
offer NAT+FW+tools and separate networks for DMZ,lan,wireless and internet.

--
Moish

The language and concepts contained herein are
guaranteed not to cause eternal torment in the
place where the guy with the horns and pointed
stick conducts his business.
 (fz)


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Re: Adding wireless to an existing network

2005-06-18 Thread Ilya Konstantinov

david wrote:


When I spoke to a salesman he said that I couldn't connect
an access point directly into the hub since it is expecting a router.Also, the wireless 
routers require that you have the internet connection going directly into them.  


Decide what you're buying: an Access Point or a Wireless Router.

Here's a chart of how an Access Point fits into your network:
http://www.linksys.com/products/display.asp?conmap=011WAP11Cdiagram.jpg&prid=157&scid=7
Notice how the Access Point (the one in the middle; ignore the one on 
the left side for now) is merely another wired device plugged into one 
of the Router's LAN ports. The router, in this chart, is taking place of 
your Hub. The Access Point is being as a bridge between the wireless and 
wired Ethernets, transparently letting them see each other as if they 
were on the same LAN.



A Wireless Router typically has a few ports of its own, so for a small 
wired network, it can take the place of the Hub. On larger networks, you 
should be able to plug the Hub into one of the LAN ports (as if it was 
another computer). If you'll buy a Linksys WRT54G (get it on eBay, as 
it's much more expensive in Israeli shops), you could upgrade it to a 
hacker-friendly firmware which gives you flat access to its' Linux OS 
and then you could make it work in pretty much any configuration you wish.




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Re: Adding wireless to an existing network

2005-06-18 Thread Uri Sharf
On Thu, 16 Jun 2005 20:29:37, david <[EMAIL PROTECTED]> wrote:
> This maybe somewhat off topic.  I have a wired LAN with a Linux box
> that connects to the Internet using an ADSL line.  The Linux box provides NAT,
> masquerading and a firewall, allowing the other machines on the network
> to access the internet.  The other machines are connected to the network via
> a hub.  I would now like to add wireless access to the network.
> 

I had similiar setup before I changed to a combo ADSL/wifi. I had the
WiFi base configured to use the ADSL (speedtouch) modem as a gateway,
and I also set the WiFI to serve as a DHCP server for other wireless
or ethernet devices directly connected to it.


-- 
Regards,
Uri Sharf

Ed., Linmagazine
http://linmagazine.co.il
News, Support and Guides on Linux and Open source in Hebrew

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Re: Adding wireless to an existing network

2005-06-18 Thread Alon Altman

On Thu, 16 Jun 2005, david wrote:


This maybe somewhat off topic.  I have a wired LAN with a Linux box
that connects to the Internet using an ADSL line.  The Linux box provides NAT,
masquerading and a firewall, allowing the other machines on the network
to access the internet.  The other machines are connected to the network via
a hub.  I would now like to add wireless access to the network.


  A cheaper soultion is to buy wireless network CARD (PCI or USB). Then, you
can configure the card to work in Ad-Hoc mode, or in some cases even act as
an access point. Wireless cards usually cost a loss less than an access
point, and are more than enough if you have a machine always on anyway
(moreover, I think they consume less power).

  Alon

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Re: Adding wireless to an existing network

2005-06-18 Thread Geoffrey S. Mendelson
On Thu, Jun 16, 2005 at 08:29:37PM +, david wrote:
> This maybe somewhat off topic.  I have a wired LAN with a Linux box 
> that connects to the Internet using an ADSL line.  The Linux box provides NAT,
> masquerading and a firewall, allowing the other machines on the network 
> to access the internet.  The other machines are connected to the network via
> a hub.  I would now like to add wireless access to the network.  
> 
> Can someone tell me what I need in order to add wireless access without 
> affecting 
> the existing wired network?  Ideally I would like to have a device that I can 
> just
> plug in to the hub.  When I spoke to a salesman he said that I couldn't 
> connect
> an access point directly into the hub since it is expecting a router.  Also, 
> the wireless 
> routers require that you have the internet connection going directly into 
> them.  
> 
> Can someone give me a definitive answer?

sure, I do it all the time. 

1. Plug a crosover cable from you pc to LAN side of the router, 
2. set DHCP off. 
3. set up the wifi network. ALWAYS USE WEP (encryption) but don't depend
   upon it for secrecy. It's there to convince spammers and pronographers
   to move on.
4. Give the LAN side of the router an ip address in your network,

5. reboot the router.
6. Plug a cable from the LAN side of your router into your network.

Geoff. 
-- 
Geoffrey S. Mendelson, Jerusalem, Israel [EMAIL PROTECTED]  N3OWJ/4X1GM
IL Voice: (077)-424-1667  IL Fax: 972-2-648-1443 U.S. Voice: 1-215-821-1838 
VoN  Skype: mendelsonfamily. Looking for work as a CTO or consultant in 
handheld gaming, large systems development, handheld device construction, etc.
See U.S. patent applications  20050108591,  20050107165.

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Re: [OT] The people's salary survey

2005-06-18 Thread Adam Morrison

(This is the last message about this topic, thanks for your patience.)

Last week I wrote:

I want to create a detailed salary database, allowing people to see
what others like themselves are earning.  If you've ever looked for a
job or even wanted to know where your current terms stand compared to
the rest of the market, I'm sure you needed something like this.

The link to the database (which is currently empty), and to more
information is at

http://www.cs.tau.ac.il/~adamx/salaries.html

Since then there were approximately 300 visits to the site, but only 12
people sent in their data (I only got around to updating the site with 9
of them).

For this site to have any value more people need to send their data, so
if you think this sort of information would be useful, please
contribute!  If you don't want to bother with sending an email, you can
do it via a form on the site (just remember that this isn't quite
anonymous).


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Re: [OT] The people's salary survey

2005-06-18 Thread guy keren

On Sat, 18 Jun 2005, Adam Morrison wrote:

> Last week I wrote:
>
>   I want to create a detailed salary database, allowing people to see
>   what others like themselves are earning.If you've ever looked for a
>   job or even wanted to know where your current terms stand compared to
>   the rest of the market, I'm sure you needed something like this.
>
>   The link to the database (which is currently empty), and to more
>   information is at
>
>   http://www.cs.tau.ac.il/~adamx/salaries.html
>
> Since then there were approximately 300 visits to the site, but only 12
> people sent in their data (I only got around to updating the site with 9
> of them).
>
> For this site to have any value more people need to send their data, so
> if you think this sort of information would be useful, please
> contribute!If you don't want to bother with sending an email, you can
> do it via a form on the site (just remember that this isn't quite
> anonymous).

the idea could be useful. however, the implementation matters a lot -
using such a non-controlled manner to gather information would render the
site unreliable for anything more then "anecdotal evidence".

i think you should try to address this problem if you want more people to
send data in.

-- 
guy

"For world domination - press 1,
 or dial 0, and please hold, for the creator." -- nob o. dy

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Re: Adding wireless to an existing network

2005-06-18 Thread Alon Altman

On Sat, 18 Jun 2005, Geoffrey S. Mendelson wrote:

3. set up the wifi network. ALWAYS USE WEP (encryption) but don't depend
  upon it for secrecy. It's there to convince spammers and pronographers
  to move on.


  Actually, if you're using your network for illegal activity (such as file
sharing) you may be better off opening your Wifi to the world in a default
configuration, and then use it as a defence ("It was not me, it was someone
leeching on my WiFi").

  Alon

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script debug to keep me alive

2005-06-18 Thread Aaron
Hi all,

When I first got internet service I was given three scripts.
Two worked fine, the third one doesn't.
I am planning a vaction and need to be able to keep my computer online
while I am away.

This is a script which needs to be run as a cron job.
I never bothered before now because I just manually check the
connection every so often.

but now I will be away.

So I need help to get the running:

Here it is:
1 #!/bin/sh
2 TESTHOST="198.133.219.25"   #Host to ping-test: cisco.com
3 STOPSCRIPT="/usr/sbin/ptstop"   #Script to stop a connection
4 STARTSCRIPT="/usr/sbin/ptstart" #Script to start a connection
5
6 [ -e /var/run/ptcron.pid ] || exit 0
7 touch /var/run/ptcron.pid
8 PING=`which ping`
9 GREP=`which grep`
10 SED=`which sed`
11 ALIVE=`$PING -c 1 -n $TESTHOST | $GREP 64\ bytes | $SED '/icmp/c\1'
12 `if [ "$ALIVE" == "1" ]; then
13  exit 0
14 fi
15 echo -e "Link is dead, reloading
16 "$STOPSCRIPT$STARTSCRIPTrm -f /var/run/ptcron.pid
17 exit 0

I already caught that line 6 dumps me to a promt...

Thanks for your help
Aaron

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Re: [OT] The people's salary survey

2005-06-18 Thread Peter



On Sat, 18 Jun 2005, Adam Morrison wrote:


Since then there were approximately 300 visits to the site, but only 12
people sent in their data (I only got around to updating the site with 9
of them).


You have a ~5% return on a survey. That is normal.

Peter

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