> > I want recommendations from professionals for System Security Software > for both Linux and Windows NT. I am not a professional but as for linux you have a wide range of choices: for probing and the sort you need to get portsentry which is available at freshmeat.net. Then you need to set up an ipchains firewall. One other really useful thing to do is to run the bastille script for hardening linux on your machine. It is also available at freshmeat. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org