I have a server on a network inside a PIX 506E. I have an external device that I can ping from the PIX, and the external device responds, which can be seen on the PIX command line interface. I have a server inside the PIX which is attached to the PIX via a switch. The server can send a ping request out to the external device, which responds (as seen on the PIX command line by use of debug packet), however the response never gets sent back through to the internal server.
I am also having problems getting Internet Explorer on that internal server to open up websites by domain name (such as windowsupdate.microsoft.co
m). Some websites it will open, others it won't. nslookup can resolve a name for windowsupdate.microsoft.co
m, but IE seemingly can't. IE can open websites by IP address (like http://123.456.789.123/index.htm
Does anyone have any idea what the problem might be, and how I can resolve it?