Networking is the art of connecting two or more devices together so that they can communicate with each other.

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Windows DHCP vs third party DHCP software/tools

I would like to know, what are the benefits of using other third party DHCP software compare to Windows DHCP. What are the advantages/disadvantages or is there any limitation since Windows DHCP ...
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1answer
15 views

Can't connect to network using windows 8

I have small local network with no access to internet. I was using PCs with win 7 OS and everything worked fine. But when I wanted to add PC with win 8 OS this PC can't see any other on the network. ...
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4 views

Use of RSVP classifier in Linux ( cls_rsvp )

RSVP protocol for resource reservation is implemented in linux in cls_rsvp module. I would like to know using this module will i be able to reserve bandwidth for a session or it just recognises RSVP ...
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0answers
12 views

unable to access local web server over wifi

I'm using a Huawei wifi dongle to create a small wifi network in my house. I mostly just need a network to access my webserver on network devices and occasionally share files Problem: Webserver can ...
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0answers
2 views

Modbus Communication not Working

https://code.google.com/p/stm32modbus/source/browse/#svn%2Ftrunk%2F%20stm32modbus%20--username%20ickingdom%40gmail.com%253Fstate%253Dclosed I have debug and compile this program successfully but ...
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1answer
11 views

How do web hosting IPv6 allocations work? [on hold]

Now that web hosts are starting to provide IPv6 addresses in addition to IPv4 (or in a few cases, instead), I am finding myself puzzled as to what number of addresses are actually allocated. As I ...
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0answers
20 views

Server can ping to but can NOT bet pinged by other server

I got a quite basic question since I am just a programmer who have no idea how to deal with this kind of problem. The company has 2 server (let's call them server A and server B) and I can ping those ...
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0answers
13 views

Using Tap/Tun to intercept packets at IP level

I would like to intercept packets on the IP level. If my machine receives a packet with an IP address not destined to it's own IP address, I would like that packet to be sent to a user space program. ...
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1answer
10 views

Hardwired ethernet connection not coming up on Ubuntu 12.0.4

I have a Toshiba Satellite P870 laptop in which the wireless connection is working but the eth0 is not showing up on networking. It does however show up in lspci: Notice the second to last entry: ...
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0answers
13 views

2 port 10Gbe NIC Performance half of expected

I'm having trouble getting my expected throughput of a Intel dual port 82599EB 10-Gigabit. I've tried many things and want to know if there's anything I could try that I've missed. My hardware ...
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0answers
8 views

Windows Server 2012 R2 RDS terminal session constant freeze, disconnects

I have installed Windows 2012 R2, using it to support 15 remote desktop users. I have installed Office 2007 open lic. The problem I am having is I start a session, then if I run any Office program, or ...
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2answers
18 views

SYN_SENT connections pile up for 10-20 seconds

I refresh a few pages concurrently in a browser (any browser, Safari, Chrome, etc) and they suddenly get stuck, waiting for "connection". lsof shows a number of connections in status SYN_SENT. Their ...
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28 views

Wi-Fi does not work on OS X Yosemite Beta 4

When I installed OS X Yosemite Beta 4 on my 2008 iMac, it could not see any wireless networks and the button on the menu bar went crazy. When I turned it off, it did not change anything in the ...
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0answers
12 views

Why am I invisible to the devices on my network?

I've been using a DLink powerline adapter to establish a wired connection to my upstairs PC. A couple times a day, for sometimes hours at a stretch, I lose the ability to communicate with other ...
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1answer
16 views

How can I connect to a WiFi network in Windows 8.1 that has been forgotten?

On Windows 8.1, a wifi network was marked as "Forget", but now I want to connect to that network and I can't even see the network. I tried adding the connection manually, and that didn't work. I ...
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0answers
12 views

2 laptops both Windows 8.1 on a home group

I was trying to create a homegroup, by mistake I created a Host Homegroup on both computers, I have left the Homegroup on the computer I wish to be the Client, but cannot find a way of joining the ...
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0answers
16 views

SSH reverse proxy

I am setting up a Gitlab server (https://about.gitlab.com/) inside a virtual machine using KVM on a Ubuntu 14.04 host. My university charges us for every external IP address, so I cannot use bridged ...
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29 views

Spoofing public IPv4 address [duplicate]

How can I spoof my public IPv4 address to another without using proxys? I don't need any response, the TCP handshake needn't be completed! I just want to send a SYN packet with spoofed (specific) ...
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5 views

HP Laserjet 1020 plus offline error on client

I have desktop i3 processor I haves connected a printer 1020 plus directly through USB with the desktop and shared the printer in the network. I have shared the printer with 7 clients it’s working. ...
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0answers
7 views

VPN Adapter, current user only

Recently I faced a problem with my vpn on an rdp server, there are multiple users on the server the issue I am facing is when I enable my vpn it connects everyone on the server to my vpn, is there a ...
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1answer
12 views

About setting up a VPN

Do i need a dedicated server machine to run a VPN server or would it be ok if i used one of the working PC and a windows VPN client on it? I would expect at a time 10 clients to be connected and ...
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0answers
36 views

Why does Firefox not auto-detect the proxy after upgrading to version 31?

My Firefox cannot detect the proxy any more after upgrading it to version 31. The proxy setting inside Firefox network option is Auto-detect proxy settings for this network. Before upgrading to ...
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1answer
16 views

Sporadic brief yet massive drops in bandwidth

One office internet connection I use regularly has decent average bandwidth (around 40M up/40M down typically). However, it commonly has brief drops in bandwidth. These typically last for 0.5-5 ...
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1answer
11 views

Specifics of Setting up a VPN

I have two small offices, and one office has a NAS storage, say office 1. I want office 2 to also have access to the NAS via a intuitive interface - shared drives, as seen by office 1 employees. If i ...
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2answers
20 views

How do you get to a DD-WRT router's configuration page? (repeater bridge)

Here is my internet setup: Internet → Apartment WiFi → DD-WRT Router The router has been configured as a repeater bridge per the guide in the DD-WRT wiki: ...
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11 views

Unable to connect to internet with VirtualBox?

Earlier, I was using multiple instances of Virtual Machines running Linux Ubuntu 14.04 on VirtualBox. They were working fine, with internet connectivity, etc. However, I then created a new Virtual ...
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16 views

Computer randomly sees two networks after cold boot?

Most of the time, when I reboot my Dell with Windows 8.1, I get a "limited connectivity" warning and notice that it has two network locations. There should only be one. I usually disable and re-enable ...
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0answers
16 views

I am not able to get a Dell keyboard to work with my Lenovo U430 Ideapad.

I bought a USB adaptor so the keyboard can be plugged in, (it has a PS2 plug) but nothing happens when I type on it.
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6 views

Fetch from NPM registry always fails

On my Windows server 2012 machine I am unable to install/update npm packages. It was working allright, but stopped one day. I tried everything and I am seriously thinking about reinstalling the ...
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0answers
17 views

Setting up networking Ubuntu on VirtualBox with Host-Only networking

I'm having difficulty getting host-only networking working right on Virtual Box. My intention is to have all my VMs on 192.168.1.x and my host on 192.168.0.1. On my guest machine, I am unable to ...
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0answers
3 views

Java OSX 1.6 Mac does not connect to network

When using httpclient calls on the network, only Java 1.6 (Java 1.6 065) on OSX does not connect outside of the network. But when connecting to the same URL from any other application, the connection ...
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2answers
1k views

Figuring out how many megabytes go into gigabytes?

I needed to figure out how many requests could be made with 1000 GB of traffic if each request took 1MB on average. I quickly did the math on paper, and then as a second thought plugged it into ...
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1answer
18 views

Configure Raspberry PI Access Point to use RADIUS Apache Authentication?

I made a Raspberry PI into a wireless access point using isc-dhcp-server and hostapd, which is cool. What I would like to do is add a web-page authentication form for the network where I could display ...
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0answers
11 views

Multiple HomePlug adapters

I bought 6 NetGear HomePlug AV adapters, one for each room, and they all work quite well, there is a loss of about 20-30Mbps, but leaves us with 40-50Mbps which is still good. How exactly do they ...
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0answers
14 views

Network computers not showing up but can still access them

I'm having a weird issue with network discovery. From my Windows 8.1 PC, I can access my network computers by typing in their local IP into the explorer address bar (and they show up afterwards in the ...
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2answers
47 views

LAN adapter works every second time I turn my PC on

I have a really strange problem and I am desperate for help now, since I could not find any solution on the internet. Specifications first: I am using a desktop computer and a router. The router ...
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0answers
10 views

Connection Oriented Transport Protocol

Does anyone have an idea about a software for Linux that uses COTP (ISO 8073) protocol ? note : software that runs COTP over TCP , doesn't matter what is the functionality of the software i just need ...
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0answers
11 views

dhcp.leases file does not get updated sometimes

This is on Centos, using the dhcpd server. Sometimes, when a client gets a lease, the dhcp.leases file is not updated, or is updated late. For example, here's a log from the dhcp server: Jul 27 ...
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2answers
32 views

Setting up a Basic VPN

Ok so we are a small company, and I am a Partner cum Computer Enthusiast(and hence IT Administrator) at this company. We have two offices, separated 100km. I have purchased a NAS to be installed in ...
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19 views

How do I delay tcp traffic on a socket?

I would like to test the interactions between a client program and a server program for race conditions. They connect to each other via tcp. The client does blocking calls to the server on multiple ...
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0answers
17 views

Associating a domain name with web server

I am currently running a web server on AWS and I have a domain name that I want to associate with the server. The server is running nginx on port 80 yada yada but the part I am having trouble with is ...
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0answers
29 views

Setting a static ip in Ubuntu 14 is becoming an all day project today

I've never in my life have had so much difficulty in setting up a static ip. I've researched pass questions on askubuntu.com and have looked up multiple references and documents on setting up a static ...
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1answer
37 views

WHY can't I connect to my Access Point anymore

windows xp wireless stops working after use wired connection I cant see the wireless network in available wireless network list in wireless network connection properties, the use Windows to ...
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4answers
50 views

Can I send a WAN and LAN connection over the same cable?

My home is ethernet wired, with all cables terminating in a patch panel in a box in the master bedroom walk-in closet. I was wondering if I could send the WAN connection into one of the rooms and then ...
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3answers
44 views

What specific roles does firmware play on routers?

If routers properly implement standard networking protocols (DNS, DHTCP, TCP/IP, etc.), then wouldn't the same firmware (implementing these protocols) be applicable to all routers? I guess I'm ...
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1answer
17 views

Relationship of routers to networks

I was wondering, in networking, what is the relationship of routers to networks? Can the same router be the gateway for 2+ networks? For example, if I have a wireless router at home, can I configure ...
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0answers
6 views

Bridge OpenVPN LAN adpater and let WiFi AP connect directly to the LAN

I want to share the so far unused WiFi connection on my PC with mobile devices in the house. This works fine if I set up the virtual OpenVPN LAN adapter to be my shared internet connection. If I ...
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25 views

DHCP letting multiple devices get same IP address - how to trouble shoot?

I am using a win2008 server with AD to also serve DHCP and DNS. I have some wifi AP's that are giving me trouble (dropping connections and generally misbehaving). The issue that I notice is that the ...
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11 views

Creating hosted network with netsh when having to select the adapter

I'm on Win7. I usually create a hosted network by creating then executing a process that runs netsh wlan hostednetwork mode=allow ssid=MYSSID key=MYPASSWORD keyusage=temporary. So far, no problem. ...
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1answer
20 views

Obtain IP address logging data from firmware? other non-hdd memory?

Is there a way to find a history of internet sites (IP addresses) a laptop / computer has communicated with, without having the hard disk installed? In other words, is this data logged into firmware ...