I know that in every other game in town, there's nothing worse than knowing enough to be dangerous. That's me. I've spent a gazillion hours on the www learning about subnet masks and I think I know enough about bits,bytes,and the like to make a mask for my small network. And that there's only a handfull of possible ones. My network is an ASA firewall, 3 servers, and a couple dozen workstations and devices. It was always a 10.0.0.0 network with a 255.255.255.0 mask. My goal is to split it, and restrict the available ip's. (I have only ever used static ip's. No DCHP. I have always lived that way and like the control of static ip's). - I came up with 10.157.1.16 to 10.157.1.31 with a mask of 255.255.255.240. (half the network will be 10.157.2.16 to 10.157.2.31 and 255.255.255.240. My understanding is that 16 is the network address, 17 the lowest ip available, 30 the highest, and 31 the broadcast ip. So the questions are.. 1.)Am I right with the ip's and the mask? 2.) Is it true that 10.157.1.16 and 10.157.1.31 can not be used for a host, the firewall or other device? 3.) If someone programs a static ip on their laptop of 10.157.1.10 or 40 or any other number with a mask of 255.255.255.0, what will happen? Can they use the gateway I'm assigning as 10.157.1.30? Are they locked out of browsing the lan?
I thank you in advance for your patience and answers. I'm about to implement and hope I didn't just become an educated meathead.
-Greg
I thank you in advance for your patience and answers. I'm about to implement and hope I didn't just become an educated meathead.
-Greg