8 captive portal worksheet:

download and build

download nocat splash package from aitwsws.net/joel

tar -zxvf NoCatSplash-0.93pre2.tar.gz

cd NoCatSplash-0.93pre2

./configure

make

(as root)

make install

create a new interface

ifconfig eth0:1 192.168.1x.1/24 where x is your group number

enable nat and forwarding

echo 1 > /proc/sys/net/ipv4/ip_forward

(nat translation example)

iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE

iptables --append FORWARD --in-interface eth0:1 -j ACCEPT

configure nocat

edit /usr/local/etc/nocat.conf

locate the internel device stanza

add

InternalDevice eth0:1

add

LocalNetwork 192.168.1x.1/24

Start nocat

splashd -D

take a look in /var/log/messages to see if it worked

you can also go to 127.0.0.1:5280

to see the splash page

to see what it did to iptables, do:

iptables -L

to test, configure a client to have and address in 192.168.1x.0/24 and use .1 as the default route.