networking Questions

5

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I have a computer at work which I sometimes wakeup from home in order to access it but when boots and gets another IP address from our DHCP server, how can I access it? The situation and my “workfl...
Roden asked 4/3, 2016 at 20:20

6

I tried some suggestions, such as navigator.onLine, but even in flight mode, my app "thinks" its online. I found some suggestions with ajax too, but I just want to check if I'm online to open an e...
Hexapody asked 2/8, 2016 at 12:30

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It halts when using npm to install dependencies for node.js applications. But works without any problem outside China. Who know ways to make it works beside VPN/SSH channel. $ npm install npm htt...
Moersch asked 31/3, 2014 at 14:33

12

I have been trying (and failing) to set up any kind of internet connection for my Windows XP virtual machine and would appreciate some assistance. Details are as follows: Virtualbox 4.3.0 Mac OS...
Bunkhouse asked 17/1, 2014 at 12:53

3

I am using Fedora 18 with the avahi command line tools (version 0.6.31) I use avahi-resolve-host-name to discover the IP address of units on my subnet, for testing purposes during development. I m...
Dumps asked 22/8, 2013 at 18:37

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I am trying to scan a large set of domain names using nmap. I used the following command: Nmap -PN -p443 -sS -T5 -oX out.xml -iL in.csv I get the following warning: Warning: xx.xx.xx.xx giving ...
Manage asked 6/2, 2013 at 18:50

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Background: Assume I use the following powershell script from my local machine to automatically map some network drives. $net = $(New-Object -ComObject WScript.Network); $net.MapNetworkDrive("p:",...
Platonic asked 7/10, 2009 at 10:23

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I want to transfer some data between PC and a mobile phone with WiFi. This is how I get the WiFi IP address: String ip = String.format( "%d.%d.%d.%d", (wifiInfo.getIpAddress() & 0xff), (wi...
Goosefish asked 27/1, 2015 at 9:29

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Installed NodeJS on Raspberry Pi, is there a way to check if the rPi is connected to the internet via NodeJs ?
Outmoded asked 7/3, 2013 at 12:10

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I've seen this Q/A What triggers, but it's not what I want. I also read this Network privacy permission check, but there is no answer. I also search for any methods or classes which can help me her...
Justiciar asked 17/9, 2020 at 14:37

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I am new to socket programming and trying my hand on it on Linux machine (ubuntu) I am unable to understand the option 'SOCK_RAW' and want to learn about it. What is the significance of the 'SOCK_R...
Mecke asked 11/6, 2015 at 11:54

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Constraints: 1. Speed matters. 2. I am allowed to ping once. I'm debating whether to use Python or shellscripting. Is there a method faster than bash? Here is the current code, for ip in $(seq ...
Frigg asked 26/12, 2012 at 9:37

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I'm trying simple port forwarding with VirtualBox and it appears VirtualBox.exe is listening on the host to the port, but not actually forwarding the connection to the guest. I've tried on multiple...
Betteann asked 22/3, 2013 at 21:59

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Is there anyway to get the names of the NIC cards in the machine etc. eth0, lo? If so how do you do it? I have researched but so far I have only found code to get IP addresses and MAC addresses onl...
Tenantry asked 1/10, 2010 at 6:55

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I'm trying to run docker image on MacOS with VPN turned on (TUN device). Docker container can access internet, but is not able to access resources behind vpn. What is the right way to make Docker g...
Breeding asked 24/11, 2015 at 21:58

6

I've been tinkering around with WSL-2 for a while now and don't exactly understand how traffic is routed between the host and WSL-2 dist. In some sources it seems like all ports used by WSL-2 autom...
Lucan asked 24/10, 2020 at 13:42

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In IPv6 networking, the IPV6_V6ONLY flag is used to ensure that a socket will only use IPv6, and in particular that IPv4-to-IPv6 mapping won't be used for that socket. On many OS's, the IPV6_V6ONLY...
Saraann asked 22/4, 2010 at 19:11

6

I'm having trouble starting my docker daemon. I've installed docker but when I try to run # systemctl start docker.service it throws an error. $ systemctl status docker.service gives me this: ● do...
Chafe asked 21/9, 2016 at 13:4

17

I am a noob using create-react-app to create a App, yarn start start the server at http://localhost:3000/, I can't visit this url on my mobile. How can I make some configs to preview the app on my ...
Cimabue asked 18/8, 2017 at 15:38

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I have a pretty straight-forward question. I made a web game with NodeJS, and I can successfully play it by myself with multiple browser windows open side-by-side; however, I'd like to know if it's...
Nereus asked 30/3, 2011 at 17:38

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From what I can understand, counting-to-infinity occurs when one router feeds another old information, which continues to propagate through the network toward infinity. From what I read, this can d...
Lackey asked 23/11, 2012 at 6:5

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I have a couple ideas on how I would achieve this. Not sure how I would script it. Method 1: (probably the better choice) Create a loop that pings a server until reply is received then execute co...
Transferor asked 9/3, 2014 at 3:5

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OS: Vista enterprise When i switch between my home and office network, i always face issues with getting connected to the network. Almost always I have to use the diagnostic service in 'Network an...
Anvil asked 16/10, 2008 at 3:0

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Is there a command line based way to send pings to each computer in a subnet? Like for(int i = 1; i < 254; i++) ping(192.168.1.i); to enforce arp resolution?
Eurythermal asked 2/2, 2009 at 13:16

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i have a little problem with my script, where i need to convert ip in form 'xxx.xxx.xxx.xxx' to integer representation and go back from this form. def iptoint(ip): return int(socket.inet_aton(ip)...
Seagirt asked 11/4, 2011 at 10:2

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