should be able to..
on laptop A
Code:
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
where ppp0 is your out interface..(and yeah i know its a bad way of natting)
to save so the effective changes are lost after a reboot edit the two files...
Code:
/etc/sysctl.conf:
net.ipv4.ip_forward = 1
/etc/rc.local:
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
gui? idk.. im sure there is somewhere, but why? 2 commands and you can share your connection on a local net..