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I'm using the TrinityOS document as a template.  I want to allow 
access from the outside to our pop3 server running on the firewall 
machine.  I think this is what I need to do:

(all one line)
/sbin/ipchains -A input -j ACCEPT -i $EXTIF -p tcp -s $UNIVERSE/32 -d 
$EXTIP/32 pop-3

The part I'm not sure of is the /32.  We have been assigned a range 
of public IPs from xxx.xxx.xxx.225 to .254 and I think the cidr 
notation for our subnet mask is /24.  Would I want to replace all 
TrinityOS references to the outside address with /24?

Out internal network is 5 separate subnets, 172.16.1.0, 2.0, 3.0, 
4.0, and 5.0 with the firewall host sitting on 2.0.

Thanks,
Ken Long


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