In my case, the firewall doesn't allow any port 23 traffic from the external adapter on the firewall so that all of the "inside" IP addresses can access the i on port 23 but if someone tries to hit the external address at port 23, it isn't forwarded to the i. The firewall should handle the external access so there really isn't anything you need to do on the i (unless the Ethernet adapter is external as well). I haven't used a DMZ so I can't speak to that. I have a MS ISA server between the outside world and the i.

Pete Helgren
Value Added Software, Inc

On 8/24/2010 7:13 PM, Trevor Perry wrote:
I have a customer who has turned off port 23 and only uses SSL. We have a
requirement where we must use port 23 for unsecured telnet. How can I ensure
that opening port 23 does not expose telnet beyond their DMZ/firewall?


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