Since we are talking about an ICS CLIENT and not the host, you can get similar firewall efforts in the TCP/IP security settings. Just add the ports you want to allow. Deny all the others.
I have a small 2-3 system LAN set up which also uses ICS. I can handle the updating and security of my main system without trouble, but I don't always have time or remember to get around to updating the others as often as I should. For that reason I'd like to use ICF on those systems as something of a small stopgap measure.
Trouble is, one of those systems has a printer hooked to it that I want to use via the LAN as well as a shared folder. Trouble is, ICF blocks my attempts to get to that system. Is there any way to allow 192.168.*.* addresses in using the SP1 level ICF or am I stuck waiting for SP2 or looking for some other firewall package?