Re: Seeking LAN Setup advices

Chris Henry <[email protected]>
Newsgroups gmane.user-groups.linux.singapore
Message-ID <[email protected]>
On Thu, Apr 29, 2010 at 5:12 PM, Martin Bähr <
mbaehr-J82dVEKiPgVsIEQYbtjsvCEcasqEdqbRs2V0tQ3P5b8@public.gmane.org> wrote:

> On Thu, Apr 29, 2010 at 08:58:43PM +1200, Joel Wiramu Pauling wrote:
> > Vlan tags are used for shared physical media between switches/routers
> which
> > are vlan tag aware. End points can also be vlan aware (i.e a linux box).
>
> sure they can, but that's no longer secure.
> unless you trust all the computers, in which case there is no more need
> for seperate vlans at least for the original poster. (there may be other
> reasons for using seperate vlans though)
>

In the physical wire case, the vlan is (I believe) associated with the port
the computer is connected to. In a way, this is not secure since you can
plug your machine to another port that uses different vlan. However, this
also applies even if you have 2 switches.

In the wi-fi example, we can assign different ssid to different vlan,
securing each ssid with different WEP(, etc.).

In both cases, each vlan provides a "virtual" switch/router if you like.
Exactly with the same advantages and disadvantages of physical
switch/router.

This is of course from my basic understanding on how vlan works. So do
correct me if I'm grossly mistaken.

Cheers,


-- 
Chris

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