/etc/network/interfaces

/etc/network/interfaces

[Doug Smith]

I have a couple of questions about /etc/network/interfaces.  On this command line only debian testing system, I have found this to be really the only 
effective way to configure networks.  I have a question, though.  

If I put in stanzas for each connection we have here, an allow hotplug and then the interface info, will my ifup be able to connect to either of the 
wireless networks depending on which one is in range or will it error out because there is more than one connection for the same wlan0 interface? 



Thanks.




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S.W.A.T  Spiritual Warfare and Advanced Technology
Forever serving our LORD and SAVIOUR, JESUS CHRIST.

Re: /etc/network/interfaces

[Gregory Nowak]

It's been a while since I had access to multiple networks. From what I
recall, each connection requires its own wlan0 configuration block
(I.E. you can't have multiple network configurations for the same wlan
interface). You also can't have multiple wlan0 interfaces defined at
the same time, or you'll get an error.

My quick and dirty work around was to comment out the network I didn't
want to use, and to uncomment the one I did. If you don't want to play
with commenting and uncommenting your interfaces file every time you
want to connect to a different network, then wpasupplicant can be
configured to connect to multiple networks, and to prefer one over
another if they are both in range. Have a look at the wpa_supplicant,
and wpa_supplicant.conf man pages. Oh yes, and from what I recall,
wpasupplicant does integrate nicely with your interfaces file.

Greg


On Wed, Jun 12, 2013 at 11:46:36PM -0400, Doug Smith wrote:
> 
> 
> I have a couple of questions about /etc/network/interfaces.  On this command line only debian testing system, I have found this to be really the only 
> effective way to configure networks.  I have a question, though.  
> 
> If I put in stanzas for each connection we have here, an allow hotplug and then the interface info, will my ifup be able to connect to either of the 
> wireless networks depending on which one is in range or will it error out because there is more than one connection for the same wlan0 interface? 
> 
> 
> 
> Thanks.
> 
> 
> 
> 
> -- 
> Doug Smith: Special Agent
> S.W.A.T  Spiritual Warfare and Advanced Technology
> Forever serving our LORD and SAVIOUR, JESUS CHRIST.
> 
> _______________________________________________
> Speakup mailing list
> Speakup@linux-speakup.org
> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
> 

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Re: /etc/network/interfaces

[Jason White]

Gregory Nowak <greg@gregn.net> wrote:
> It's been a while since I had access to multiple networks. From what I
> recall, each connection requires its own wlan0 configuration block
> (I.E. you can't have multiple network configurations for the same wlan
> interface). You also can't have multiple wlan0 interfaces defined at
> the same time, or you'll get an error.
> 

My recollection is that you can label the connections in the interfaces file,
and then bring up the right connection manually with the ifup command.
> My quick and dirty work around was to comment out the network I didn't
> want to use, and to uncomment the one I did. If you don't want to play
> with commenting and uncommenting your interfaces file every time you
> want to connect to a different network, then wpasupplicant can be
> configured to connect to multiple networks, and to prefer one over
> another if they are both in range. Have a look at the wpa_supplicant,
> and wpa_supplicant.conf man pages. Oh yes, and from what I recall,
> wpasupplicant does integrate nicely with your interfaces file.

It's the right tool to use for wireless networks, especially if they're using
WPa 2, as they should be for security reasons.

RE: /etc/network/interfaces

[Don Raikes]

Ok, so I haven't looked at wpasupplicant yet, but is there any kind of quick and dirty tutorial on how to get debian up and running on a wireless network?

I have both wired and wireless connections here, and would like ot be able to use the wireless when I move from office to office (actually from my home office to the family room :-) ).
-----Original Message-----
From: Jason White [mailto:jason@jasonjgw.net] 
Sent: Wednesday, June 12, 2013 11:17 PM
To: speakup@linux-speakup.org
Subject: Re: /etc/network/interfaces

Gregory Nowak <greg@gregn.net> wrote:
> It's been a while since I had access to multiple networks. From what I 
> recall, each connection requires its own wlan0 configuration block 
> (I.E. you can't have multiple network configurations for the same wlan 
> interface). You also can't have multiple wlan0 interfaces defined at 
> the same time, or you'll get an error.
> 

My recollection is that you can label the connections in the interfaces file, and then bring up the right connection manually with the ifup command.
> My quick and dirty work around was to comment out the network I didn't 
> want to use, and to uncomment the one I did. If you don't want to play 
> with commenting and uncommenting your interfaces file every time you 
> want to connect to a different network, then wpasupplicant can be 
> configured to connect to multiple networks, and to prefer one over 
> another if they are both in range. Have a look at the wpa_supplicant, 
> and wpa_supplicant.conf man pages. Oh yes, and from what I recall, 
> wpasupplicant does integrate nicely with your interfaces file.

It's the right tool to use for wireless networks, especially if they're using WPa 2, as they should be for security reasons.

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Re: /etc/network/interfaces

[Gregory Nowak]

http://wiki.debian.org/WiFi

Greg


On Thu, Jun 13, 2013 at 10:08:03AM -0700, Don Raikes wrote:
> Ok, so I haven't looked at wpasupplicant yet, but is there any kind of quick and dirty tutorial on how to get debian up and running on a wireless network?
> 
> I have both wired and wireless connections here, and would like ot be able to use the wireless when I move from office to office (actually from my home office to the family room :-) ).


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gpg public key: http://www.gregn..net/pubkey.asc
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Re: /etc/network/interfaces

[Jason White]

Don Raikes <don.raikes@oracle.com> wrote:
> Ok, so I haven't looked at wpasupplicant yet, but is there any kind of quick and dirty tutorial on how to get debian up and running on a wireless network?
> 
> I have both wired and wireless connections here, and would like ot be able to use the wireless when I move from office to office (actually from my home office to the family room :-) ).

I'm no wireless expert, but I think the usual configuration, if you have two
access points, is to set them up so that they're on the same wireless network,
with the same essid. You can then run your Linux devices in infrastructure
mode and there are plenty of tutorials out on the Web for configuring that.