subnet

I want to generate some random IP Address. But evertime this generateIPAddress function returns 0.0.0.0 string as ipAddress. But it should be returning some random ipAddress other than 0.0.0.0 everytime. Any suggestions why is it happening? private void callingGeoService() { int p1 = 255; int p2 = 0; int p3 = 0; int inc = 5; String ipAddress = generateIPAddress(p1, p2, p3); p3 += inc; if (p3 > 255) { p3 = 0; p2 += inc; if (p2 > 255) { p2 = 0; p1--; if (p1 <= 0) { p1 = 0; } } } } This is the generateIPAddress method private String generateIPAddress(int p1, int p2, int p3) { StringBuilder sb =

I have a mysql instance (and schema) running on windows that I can access via a connection string based on localhost as the server. now I want to be able to access this db from another machine on the same subnet. If possible I would like to use a single user but allow it to access from any machine on the same subnet. how do I setup security for this? (I already opened the relevant firewall port) Thanks, Eyal You can do it like this: GRANT ALL PRIVILEGES ON mydb TO 'username'@'192.168.1.0/255.255.255.0'; change subnet and IP accordingly You can also use wildcards, rather than a masks. You can

I have to subnet a network from a single class C IP address. I have figured out the subnet mask and the broadcast address (I'm using subnet mask /28) but don't understand how to get the gateway address. Can anyone help me? Rajneesh Tiwari If subnet mask is 255.255.255.248 then number of masked bit will be 5, hence number of subnets = 2. The power number of masked bits = 2 the power 5 = 32 subnets, and the number of hosts per subnets = 2. The power (unmasked bit or 32- total number of network bits) = 2 the power (32-29) = 8 host/subnet. Hence: 1) IP's in subnet-1 will be from 192.168.1.0 to 192

It's simple enough to code up a class to store/validate something like 192.168.0.0/16 , but I was curious if a native type for this already existed in .NET? I would imagine it would work a lot like IPAddress : CIDR subnet = CIDR.Parse("192.168.0.0/16"); Basically it just needs to make sure you're working with an IPv4 or IPv6 address and then that the number of bits your specifying is valid for that type. No there is such native type in .NET, you will need to develop one your self. Koen Zomers You can use the code from CodePlex to do just that: http://ipnetwork.codeplex.com/ IPNetwork ipnetwork

I want to access a few instances in my private subnet using EIPs. Is there a way? I know it doesn't make much sense. But let me explain in detail. I have a VPC with 2 subnets. 1) 192.168.0.0/24 (public subnet) has EIPs attached to it 2) 192.168.1.0/24 (private subnet) There is a NAT instance between these to allow the private instances have outbound access to the internet. Everything works fine as mentioned here : http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html But now, for a temporary time I need to address the instances on the private subnet directly from the