Hi every one i am trying to understand vlan behavior on tagged and untagged packets.i have come across these statement which sounds quite confusing to me When a tagged packet enters a port, the de...

We're creating a heavy-load network-traffic-centric application and run those server quite successful for many, many years under Java 8. Network-traffic-centric means that quite often the server ha...

When I use display filter for HTTP it shows only HTTP packets when HTTP message is on standard port i.e. on port 80. But, when message is not using standard port, then display filter not works for ...

I want to detect if an address is temporary ipv6 address, i using getifaddrs to get the list of addresses but don't know how to get that info from there. And if possible i want that to work for lin...

I am capturing network traffic by using tcpdump. The problem is: I can't see all capture data when the package is too long. For example, when the tcp frame length is more than 500, I just see 100-2...

I have a small TV box device running Android. Whenever I bring up the Wi-Fi interface, the Ethernet interface is disconnected. If I then bring up the Ethernet device, the Wi-Fi interface. I have t...

Mine is similar to this question. How to copy a file from a network share to local disk with variables? The only difference is my network drive has a password protect with username and password. ...

Just as you'd ping an IP of to a server to check if it is up, can we also check if, on that running server, a port is active/open? this just comes from my head,but can you be more specific in your...

I need to broadcast a message using UDP from my Android app to every device on my network (ethernet). I'm lost on how to do this though because there doesn't seem to be any documentation on how to ...

I'm getting introduced into IPv6 and I've read that IPv4 addresses can be mapped to IPv6 by using the ::ffff: prefix. This led me to think whether address ::ffff:127.0.0.1 refers to localhost, so I...

We followed the guide to setup an SSL application gateway - https://learn.microsoft.com/en-us/azure/application-gateway/application-gateway-ssl-portal. When I create the rule for https traffic, I...

As it is stated in the Linux man page Use this constant as the level argument to getsockopt or setsockopt to manipulate the socket-level options described in this section But I don't get this...

I am currently working on Flutter app. I have to implement Dynamic Adaptive Streaming over HTTP(DASH) protocol for video streaming on my app. For that I have to know the current internet bandwidth ...

I need to get the IP address of an iOS device in Swift. This is not a duplicate of other questions about this! I need to get only WiFi IP address. If there is no WiFi IP address, I need to handle i...

In the android network security docs , it says to create a network_security_config.xml file in res/xml folder. In order to make an entry in manifest file, it says to make an entry in this way &lt...

Is it possible to disconnect from localhost? I'm writing a Node.js WebSocket server, and I want to test locally what would happen if the connection closes erroneously. If I were testing remotely,...

I'm trying to compile beej's guide to network programming examples, but Windows XP doesn't have such a function. I'm using mingw, if it makes any difference.

I don't use the default VPC. I have created another VPC. However, I haven't assigned my other VPC as default. I would like to delete my default VPC and set my other VPC as default. I read some arg...

I am developing a time-critical app on a Raspberry PI, and I need to send an image over the wire. When my image is captured, I am doing like this: # pygame.camera.Camera captures images as a Surfa...

I'm writing a program in C# that needs to monitor the amount of internet bandwidth currently in use so it can do a background upload when the internet usage is low. How can I automatically determin...

Quick question, wondering if anyone knew what the limit is for SO_RCVBUF under Windows.

I am working on an a PHP web application and i need to perform some network operations in the request like fetching someone from remote server based on user's request. Is it possible to simulate a...

This is simple Client-Server chat program.This code is working fine on computers connected on Network, how to modify it such that it can connect between computers over the Internet. Using Public IP...

I installed Lubuntu on Virtualbox. I'm using Windows 7 x64. My VM is 32 bit version. The internet works using Bridged Adapter, but I'm trying to use NAT so I can use a VPN. In Network and Sharing C...

I wrote a program that monitors an IMAP email account. It runs on a schedule, on a laptop that I travel with. Sometimes it runs when my internet connection is through my mobile device, which has a ...