Hi sluggers,
Well in doing my bit to help the world domination cause ;-)
I've been asked to set up a linux server to act as the
gateway to the internet modem on a small 98 office network.
I've got ipmasq and dial-on-demand working fine, and if a
user on a lose98 box tries to read their mail or hit a web
site the modem dials and 15secs latter bingo, it's a beautiful
thing.
However the ipchains command that the Linux book i've used
suggested is;
ipchains -P forward DENY
ipchains -A forward -s 192.168.1.0/24 -j MASQ
I got confused trying to figure out the difference between
input, output and forward chains. So my question is how secure
is the above? Basically I want it so that only the users of
the network can start a tcp/ip session through the linux box
and any session initiated from the outside will be denied.
(also for the linux box itself, don't want the gateway box
hacked down!)
Any suggested ipchain rules for above environment?
Thanks
Pete
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