I'd like to find a way to do a SQL query that will calculate the cidr (bit representation) of a subnet mask stored in the database. So for example, I've got either 255.255.255.0 or its decimal value (4294967040) stored in the database. I'd like to do a select and get back /24 representation via the query. I've done things like the fol...
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 an...
So I have ~12600 subnets: eg. 123.123.208.0/20 and an IP. I can use a SQLite Database or an array or whatever There was a similar question asked about a month ago, however I am not looking for checking one IP against one subnet but a bunch of subnets (obviously the most efficient way, hopefully not O(total subnets)) :) How can I ch...
I am taking an IT class that is a bit over my head, but trying hard to keep up. On a lab to regarding network topology using port scanners, I am instructed to "to develop a network inventory and topology for the 123.218.44.0/24 subnet." What does the notation 0/24 mean there? I had assumed it meant to consider the network range 123.218...
Hi I want to calculate the broadcast address for e.g -IP 192.168.3.1 -Subnet 255.255.255.0 =192.168.3.255 in C. I know the way (doing fancy bitwise OR's between the inversed IP and Subnet), but my problem is I come from the green fields of MacOSX Cocoa programing. I looked into the source of ipcal, but wasn't able to integrate it into...
The following is a section of code which builds a list of IP addresses and their subnet masks from the local system, however the Warn function seems to get triggered regularly which should in theory be impossible - as it should not be possible to have an IPv4 address without the associated subnet mask[?]. static NetworkUtil() { ...
I can use System.Net.IPAddress to represent a single IP Address, but what can I use to represent an entire subnet, including the network address and the subnet mask? EDIT: add missing "and its" between subnet and mask. ...
An IP Subnet is defined with two parts, a network and a prefix-length or mask. For example 192.168.0.0/16 (or, 192.168.0.0/255.255.0.0). An IP address like 192.168.1.1 is said to match this subnet because, (192.168.1.1 & 255.255.0.0) == 192.168.0.0 I am interested in what might be called the inverse of a subnet which is described...
Does anyone know how many host bits are needed to guarantee that a subnet could have 9 usable hosts? I was thinking about around 4, but I'm not sure. Can some shed some light on this? ...
Hello, how should I correctly store IP address list with addresses which are subnets to make it searchable? There are two examples: I have IP address 1.2.3.4 and in my C# List there is 1.2.3.4 entry so here we have no problems. I have IP address 3.4.5.6 and in my C# List I have subnet 3.4.0.0/24. Here is my problem. How to store IP...
Is there a way to find those values in ME (Either CDC or CLDC)? All the examples I found used SE methods. ...
I have a subnet in the format 10.132.0.0/20 and an IP address from the ASP.Net request object. Is there a .NET framework function to check to see if the IP address is within the given subnet? If not, how can it be done? Bit manipulation, I guess? ...
Hi all, is any way to detect the number of subnets which are on my network and how to find them out automatically? Abdul Khaliq ...
How can I convert a subnetmask into binary, so I'll end up with 32 digits? I can convert it into Binary, using Convert.ToString(Long-to-convert, 2) But a subnetmask of 255.255.255.0 returns(it returns it without the spaces though): 1111 1111 1111 1111 1111 1111 0 When I want it to be: 1111 1111 1111 1111 1111 1111 0000 0000 ...
Hi, I'm attempting to send multichannel audio over WiFi from one server to multiple client computers using UDP broadcast on a private network. I'm using software called Pure Data, with a UDP broadcast tool called netsend~ and netreceive~. The code is here: http://www.remu.fr/sound-delta/netsend~/ To cut a long story short, I'm able ...
Given a range of IP addresses entered by a user (through various means), I want to identify which of these machines have software running that I can talk to. Here's the basic process: Ping these addresses to find available machines Connect to a known socket on the available machines Send a message to the successfully established socke...
I've written a small script in Python that pings all subnets of my school's wireless network and prints out the IP addresses and hostnames of computers that are connected to each subnet of the network. My current setup is that I'm relying on creating threads to handle each of the ping requests. from threading import Thread import subpr...
How do I connect 2 different subnet’ed computers? For example sake let’s say the following: 192.168.1.92 connected to externally visible 222.251.155.20. 192.168.1.102 connected to externally visible 223.251.156.23. Now there is middle man server that both machines are connected to so they can negotiate each other’s internal and externa...
I have been handed the task of creating a function in python (3.1) that will take a CIDR notation and return the list of possible ip addresses. I have looked around python.org and found this: http://docs.python.org/dev/py3k/library/ipaddr.html but i haven't seen anything that will fill this need... I would be very grateful for any assi...
First Post. So I am working on a project due to some drawbacks to the abilities of a standard PAC file. Basically we need to route proxy rules based on the internal subnet of the requester. Currently the IsInNet function is the option, however this is client side and has many failpoints due to it's dependency on the myIpAddress functi...