[GRLUG] Linksys router security setup

[Bob Kline]

Thanks to everyone for the good tips.   It's sobering to see what
replacing a few tens of feet of wire can get one in to.   And I've had
very good luck with Linksys products for five or more years now,
but documentation is definately not one of its strong points.....


BTW,  there is a small version of Linux in that Linksys Wireless-G
box.  On G4's "Call for Help," or one of the sisters programs, there
was a segment a couple of years ago about how to get in and actually
program the thing.


But until I even get a wireless link set up I think I'll just relegate that
piece of information to a factoid that others might find of interest.  It
requires the need to be able to manipulate firmware with confidence,
and I suspect the opportunity to fry the box for all practical purposes
is ever lurking.


    -Bob


On 12/24/05, Mike Nicholas <nicholas at iserv.net> wrote:
>
> Next is putting in a WEP key.  Again, the drawback is that devices won't
> auto-config and you have to manually set up any device you want talking
> to your wireless network.  A WEP key encrypts the communication data.
> [MN] Typically a choice of 64-bit or 128-bit - keys can be generated with
> passphrases if desired.
>
> In my case, I turned off SSID broadcast and then built up a small
> process that asks the router to list all the devices that have made DHCP
> requests lately.  The process then checks that list against known MAC
> addresses and if it finds one without a match, it tells me.  I can then
> go into the router and tell the router to stop talking to that MAC
> (effectively blocking that computer from my network).
> [MN] aka MAC filtering - good for small networks; a pain for large ones.
>
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