subnet

问题 For example: IP Address: 130.45.34.36 Mask: 255.255.240.0 What would be Net ID/Subnet Address, and Broadcast Address? 回答1: Let's write both in binary: 130.45.34.36 = 10000010.00101101.00100010.00100100 255.255.240.0 = 11111111.11111111.11110000.00000000 A bitwise AND between the two would give us the network address: 10000010.00101101.00100010.00100100 (ip address) AND 11111111.11111111.11110000.00000000 (subnet mask) = 10000010.00101101.00100000.00000000 = 130.45.32.0 (the resulting network

问题 I need help in writing a function in C/C++ that receives two parameters: IP address and subnetmask . The function needs to reutrn a list of all IP addresses that are in the associated network. For example: Given two parameters: IP address = 192.168.33.72 and mask = 255.255.255.192 the function will return a list that contain the IP's 192.168.33.65 to 192.168.33.126. 回答1: 1) first you can transform the ipaddress and the subnetmask from string format to binary format with inet_pton() . 2) make

问题 I'm writing because I've some problems finding a correct SubnetMask of my own PC. I've already read the question How to get subnet mask of local system using java? but if I try: InetAddress thiscomputer = InetAddress.getLocalHost(); NetworkInterface thisNetworkInterface = NetworkInterface.getByInetAddress(thiscomputer); int thiscomputerSubnetMask = thisNetworkInterface.getInterfaceAddresses().get(0).getNetworkPrefixLength(); System.out.println("This pc subnetmask: "+thiscomputerSubnetMask);

问题 I want to efficiently search IPv6 subnet range using redis . i thought of storing the IPv6 numeric addresses in redis and search them by range. those are 128-bit ints , e.g: import ipaddress int(ipaddress.ip_address(u'113f:a:2:3:4:1::77')) > 22923991422715307029586104612626104439L and query by range: ZRANGEBYSCORE numerics <subnet-S-start> <subnet-S-end> HOWEVER , redis sorted-sets can hold score of up to 2^53, so all my large ints are being trimmed and I'm losing precision. Is there a way to

问题 I have a dedicated hosting with hetzner. Additionally i have bought a 6IP subnet. My main IP is: 88.198.60.125 My main subnet is: 255.255.255.224 My additional IPs are 46.4.214.81 to 46.4.214.86 the internet access work on windows servers . but centos give me invalid host I cannot use bridged mode, since hetzner does not allow multiple MACs on same external ip, so I have to use routing mode. Here is my /etc/network/interfaces file for the host: auto lo iface lo inet loopback auto eth0 iface

问题 I have the host computer with Ethernet adapter configured by this way: IP address 192.170.100.10, subnet mask 255.255.255.0. There is also hardware device which works like IP server, configured as: 192.170.100.20, 255.255.255.0. When I connect this device to the host Ethernet adapter, the following information is added to route print command output (Windows): Active Routes: Network Destination Netmask Gateway Interface Metric 192.170.100.0 255.255.255.0 192.170.100.10 192.170.100.10 20 192

问题 I'm reading the Kubernetes "Getting Started from Scratch" Guide and have arrived at the dreaded Network Section, where they state: Kubernetes imposes the following fundamental requirements on any networking implementation (barring any intentional network segmentation policies): * all containers can communicate with all other containers without NAT * all nodes can communicate with all containers (and vice-versa) without NAT * the IP that a container sees itself as is the same IP that others

问题 I have an arm template that has a vNet with 2 subnets. I am trying to deploy a Nic to one of these with a static private IP address. It used to be dynamic, and it worked fine. Now it is static, I have set the IP I want the nic to have, but when I deploy, it says the IP is invalid. I tried changing the IP I set, but it still doesn't work... Extracts from my template: (subnetPart is a parameterised number as we have several vnets that will be connected, but the subnets need to not clash)

问题 When I use this command which IP addresed are scanned # nmap -sP 192.168.0.120/25 CAn you please help me how to get the IP range when I have the addres and subnet. Because I am trying to understand this, but no result till now..Thanks in advance 回答1: The network in your command is in CIDR notation. The first part (before the / ) defines which network, and the second part defines how many bits of netmask are set. An IPv4 address is 4 bytes, or 32 bits of information. /25 means that 25 bits of

问题 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 sockets Compare the response to the expected response Steps 2-4 are straight forward for me. What is the best way to implement the first step in .NET? I'm looking at