IP Blocking of unauthenticated people

You need to follow the manual of the router to set-up the correct authentiaction

typically, restricting access can be done by using a password for the wireless connections and also by setting up a MAC address filter

what router are you using ?

most routers use the following address to set-up the router

http://192.168.1.1

or

http://192.168.2.1

I m using DSL router. 192.168.1.1

Its easy

use iplist

ref:

http://www.ubuntu-unleashed.com/2008/04/block-bad-ip-ranges-with-iplist-in.html

or classic iptables

sudo iptables -s <IP/subnet range> -j DROP

if you have a default of Default Rule of ACCEPT.

also, if you want this to load at bootup, put this line into your /etc/rc.local

/sbin/iptables -s <IP/subnet range> -j DROP

Regards

0K,
Open your browser type 192.168.1.1 on the address bar and press <Enter>.
Surely you'll be asked for a username and password, and then see if a wireless menu exist, you can configure there the access restrictions.
If you need more help, please tell me the brand and model of your router?
Hope this helps, let me know.

i downloaded "ipblock", but after installation when i m clicking on Enable option it is asking for update list, when i m clicking update, its just giving a messege " updating" for a long time and then nothing is happening.

hi assembler, as ariel said, go into your router and restrict access there, if you are using a wireless dongle you should see a mac address printed on the dongle, restrict all others and allow your own,hope this helps, pat.

Hi assembler,
The solution from Bhavani Shankar works if you're using your ubuntu machine as a router or firewall and this is not the case, you want to limit the access to your physical router and there is no software outside them that can do that.
Hope this helps, let me know.

Hi again,
Did you solve your problem or still in trouble?
Regards.