[luau] Quick and dirty ipfilter question

[yuser at hi.net]

I recently upgraded a 7.1 RH machine and now I need a really quick 
crash course in ipfilter.  How can I convert the below to an ipfilter 
format?  I found some automated tools to go from ipfwadm to ipchains 
but that is obviously not what I need.  I am reading the RTFM's and I 
will eventually get a grip on ipfilter but I don't want to leave 
myself open in the mean time.  Below is what I was using.  It allows 
SSH in from 2 places, localnet and my work firewall.  I do not need a 
full blown firewall because this machine is already behind one but 
port 22 is forwarded here so I am limiting it locally.

/sbin/ipchains -I input 1 -j ACCEPT -p tcp -s 63.13.13.2 -d 0/0 22
/sbin/ipchains -I input 1 -j ACCEPT -p tcp -s 192.168.0.0/24 -d 0/0 2
/sbin/ipchains -A input -j DENY -p tcp -s 0/0 -d 0/0 22

The only interface is eth0 and ip is 192.168.0.1 if ipfilter needs 
that extra info.  Maybe I'll have it working soon on my own but 
thanks ahead for any tips.