Setting up an IP Tables Firewall... the requirements are as follows...
External Blocked on all ports - Internal
Internal Blocked on all ports except essential ones - External
eg 80, 22, 23, 443, 110, 25, 23
This box will not be handling DHCP but probably require masquerading
can someone paste some examples of what I should be typing into the shell? and what my iptables file should look like