I have an OpenWrt 10.03 router [ IP: 192.168.1.1 ], and it has a DHCP server pool: 192.168.1.0/24 - clients are using it through wireless/wired connection. Ok!
Here's the catch: I need to separate the users from each other. How i need to do it: by IPTABLES rule [ /etc/firewall.user ]. Ok! "Loud thinking": So i need a rule something like this [on the OpenWrt router]: - DROP where SOURCE: 192.168.1.2-192.168.1.255 and DESTINATION is 192.168.1.2-192.168.1.255 The idea is this. Ok! Questions! - Will i lock out myself if i apply this firewall rule? - Is this a secure method? [ is it easy to do this?: hello, i'm a client, and i say, my IP address is 192.168.1.1! - now it can sniff the unencrypted traffic! :( - because all the clients are in the same subnet! ] - Are there any good methods to find/audit for duplicated IP addresses? - Are the any good methods to find/audit for duplicated MAC addresses? - Are there any good methods to do this IPTALBES rule on Layer2?: `$ wget -q "http://downloads.openwrt.org/backfire/10.03/ar71xx/packages/"; -O - | grep -i ebtables` `$ ` p.s.: The rule would be [is it on a good chain?]: iptables -A FORWARD -m iprange --src-range 192.168.1.2-192.168.1.255 --dst-range 192.168.1.2-192.168.1.255 -j DROP Thank you!
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