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

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Network loss after installing Hyper-V

I am running Windows Server 2012r2, after adding Hyper-V my NIC thinks it is unplugged although I have activity lights blinking. mobo: MSI A88X-G45 Gaming I'm using the latest Win8.1 x64 (since ...
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1answer
15 views

Configure a linux VM to use host computers internet connection

I am using a software which must be configured as a "bridged network" on a Virtual Box VM. I have already tried with NAT and other configurations but none of them work. the bridged network is the only ...
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55 views

how to disable tcp congestion control

here i have a private network, i know its bandwidth and it will never congestion, but will lost packet sometimes. its bandwidth is just same as network interface, both are 100Mbps. it means i could ...
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1answer
4 views

Why is Postgres sending network traffic on OSx

I was looking through my Activity Monitor seeing if there was anything running that was hogging my network and noticed that Postgres has the largest amount of bytes sent. Now the numbers aren't ...
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1answer
29 views

Local-link IP - 169.254 - for wireless network adapter - how to fix?

Definitely not the first person to ask this, but I'm wondering how to troubleshoot this... At the moment my wireless adapter on my Windows 7 PC is having issues connecting. My wireless adapter says ...
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13 views

Connect router remotely from anywhere

I'm using tp link WR1042ND wireless router and I was wondering If I can login to my router from anywhere through internet even though don't have an public ip which is needed. Is there any way ...
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23 views

How to “hide” VoIP traffic?

I'm pretty soon gonna be punished by my telecom operator for using WhatsApp,Tango,Skype etc. From now on not only will I be charged for the 3G Connection that makes services like WhatsApp,Skype etc ...
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1answer
20 views

Cannot SSH into Ubuntu VM from OS X Yosemite

I am trying to SSH into a Ubuntu 14.04 VM from OS X but am not able to do so. I have tried various suggestions from Googling but none seems to work. ping does not work either and returns the host ...
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19 views

DNS options windows 7 aren't saved?

I'm trying to use a free DNS (such as Google's: 8.8.8.8 / 8.8.4.4) by typing this in thoses options: But when I click on "validate settings upon exit" and "ok", the network diagnostic tool from ...
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2answers
45 views

Strong wifi signal but no internet connection

My wifi router is in my living room. I can use internet fine in the living room, but when I move to my bedroom, the internet connection becomes very choppy. It frequently becomes unresponsive, then I ...
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1answer
12 views

Connecting to LAN webserver through a tunnel on LAN node?

So I have work computer that has access to LAN webserver that is not accessible from WAN. Now I want to plant some kind of silent software in my computer to allow me to tunnel to said server through ...
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2answers
23 views

Which wireless configuration is more efficient for a high density network?

I recently asked about the difference between a MIMO-capable access point and a multi-band one, and I am clear on that, now the question is: Which configuration would be more efficient on a wireless ...
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Is a MIMO 2x2 wireless access point the same as a dual-band access point?

I am looking for an enterprise-grade access point for our company and looking through some information came up to the conclusion that I'll need at least a dual or even tri-band wireless access point ...
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1answer
20 views

Connecting to a computer on a switch from a computer directory from router

So I have 3 Computers: Computer 1: Connected Directly to router. Vendor: Cisco, Model: DPC3939 Computer 2: Connected to switch. Vendor Dynex, Model:: DX-E401 Computer 3: Connected to switch. Vendor ...
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2 views

Privoxy - Route certain traffic through VPN

I'm trying to setup privoxy so certain traffic is routed through a VPN tunnel. The idea is: Clients -> Server running privoxy -> send requests directly or through VPN based on URL. I already had a ...
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24 views

Computers in my network won't contact directly. They pass the local router, go to the internet router and come back

I attached a diagram of my network. In there, pc1 and pc2 are connected to a router (It have DDWRT). That router is then connected to the internet router. The internet router is in the network ...
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11 views

Can't connect via ssh from work [duplicate]

I have home station with debian on it. Today while being at office i had to make some changes in debian config, and i had to do it very urgent. I thought there will be no problem, because home station ...
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1answer
28 views

Make disk image with real-time compression over network on Linux

I have two Linux notebooks on a network and no additional storage. I want to backup the first notebook hard drive (make full HDD image), on the second notebook. How could I do that using real-time ...
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4 views

Unable to connect the Ubuntu EC2 instance to VPC LAN on AWS using secondary NIC adapter?

Infrastructure setup: VPC is created with 192.168.254.0/24 netwok Private subnet within VPC (Virtual Private Cloud) is created with 192.168.254.0/25 network Public subnet within the VPC is created ...
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How to retrieve Broadband Connection's password, which is saved?

I got a connection (Broadband connection) where username and password are saved from before and I have forgotten the password. I can connect from this PC but I need the password to connect from my ...
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24 views

Invalid IP Configuration error

I am not sure if this is the right platform to ask this question, and please consider me a newbie. I was using a ADSL modem given by BSNL (ISP). I bought a D-Link WiFi ADSL Router(DSL-2730U). I set ...
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1answer
14 views

Wifi Blocks Certain address alone

I am not a Networking person and have no idea how to figure this. I am trying to VPN into my office network(from home) to access tools. All the tools are hosted under address 10.0.0.*. I am able to ...
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1answer
14 views

how to setup a publicly hosted tcp/ip webserver to receive gprs packets(lat/long and other data) sent from a sim900A gsm module

I want to send the foll data (lat/long, date/time, velocity, deviceID) using gprs (tcp/ip connection) from a gps/gsm tracker i made (using sim900A as the gsm/gprs module). I know how to send data to a ...
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11 views

DNS config for NAT with BIND

Over the past days, i installed CentOS on a computer that I'm using to mess around with system admin related tasks. What im doing is, I'm basically making this computer into a "super router" as i like ...
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2answers
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The “/etc/init.d/networking restart” fails to update eth0/eth1 at my Ubuntu 14.04 LTS

At my Ubuntu 14.04.1 LTS, "/etc/init.d/networking restart" doesn't seem to update eth0/eth1 interfaces. Network Manager has been turned off in last reboot and "/etc/network/interfaces" has been ...
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9 views

How do I increase Azure VPN client timeout?

Microsoft Azure provides a 32 bit and 64 bit client for Azure VPN. In the VPN client properties GUI there are settings for: redial attempts e.g. 99 idle time before disconnecting e.g. never In my ...
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1answer
18 views

How do I create a hotkey to disable a certain network adapter in Windows 7?

I want to make a hotkey which I could use to disable a specific network adapter. Is that possible? If so, how would I configure that?
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Android virtual router

I just bought a chromecast and unfortunately it requires at least three devices; 1- The Chromecast 2- A device to control the chromecast (in my case a Tablet) 3- A WiFi router I was ...
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1answer
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Get the real IP address when using a reverse tunnel with ssh

Let's say I open this tunnel from my local: $ ssh -l user@135.95.66.88 -R 2401:135.115.12.68:2401 Then from 135.95.66.88 I can verify the tunnel: $ telnet localhost 2401 I know that by using lsof ...
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7 views

OS X Routing Table Breaks VPN Server Access

How do I set OS X's routing table to allow access of VPN clients to services on the host machine? OS X's routing table is preventing VPN access of the VPN server. All other connections work fine. Any ...
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27 views

Can I ping the public IP of a 3G dongle?

I want to ping my mobile device. It's a Raspberry Pi which has a 3G dongle and a working 3G connection. I can ping from my device to the outside but not the other way around. What I've researched so ...
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19 views

Exclusively connecting two networks

I have two separate networks - DMZ and core systems. DMZ is exposed to internet via VPN, core systems are obviously not. I need to transfer data between these two networks. One option is to use a jump ...
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1answer
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How to remote access a HDD-locked (node-locked) license?

I have a software license that is locked to my HDD at work (unfortunately...). During the break I want to do some work from home, but I cannot debug without the license. I am thinking of connecting ...
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1answer
31 views

Strange issue with Google

I have installed Ubuntu on my laptop. Now I have dual boot Windows 8.1 and Ubuntu 14.10 both of them are x64 bits. I have two problems: The first one is the I can't connect to their server from the ...
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10 views

Missing DNS configuration adhoc or offline

I have dnsmasq installed locally on OS X Yosemite. Everything works fine while I'm connected to the internet via wifi. However when I go offline or create an adhoc network, I lose my DNS settings: ...
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1answer
55 views

One laptop is killing our wireless

When a specific laptop is turned on all other wireless devices lose their connection but when that laptop is connected to the router with an ethernet cable the connections are all stable. Typically ...
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1answer
65 views

Why isn't the internet broken?

I'm just trying to get my head round MTU, MRU and MSS. My interest initially came from the answer in this post: Security risk of PING?: Some ICMP packet types MUST NOT be blocked, in particular ...
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1answer
18 views

iptables - UDP Packets from unknown IP addresses

I'm really new to basic systems administration, and this question is a bit difficult for me to Google. I'm setting up a small raspberry pi server for my own personal use, to teach myself some basic ...
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27 views

cant ping specific device

i have these nodes on the same network Sasmung GT-S5300 192.168.12.38 Asus Zenfone 5 192.168.12.37 pc(windows 7) 192.168.12.36 i tried to access my pc with my samsung through web browser, and ...
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tahoe-lafs: one full copy of every file per server

I am attempting to use Tahoe-LAFS to make data available on all the machines I have set a share up on. At the moment, there are two machines acting as storage nodes. I will soon be adding a third. ...
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1answer
29 views

Domain name resolves to IP address in browser address bar

I have a site that I'm hosting on my home server, and I'm using a no-ip domain name. Port 80 is in use by another application on the network I'm using, so I set the no-ip account as a port 80 ...
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23 views

How to make a computer like a router(for internet access)?

I'm trying to access my internet through another computer. The computer are connected with cable to internet and it also has a wireless network card(I don't know if same card handles both or if they ...
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17 views

Two home networks but devices can only connect to one?

I have the following setup: 1 router w/ modem connected downstairs to the ISP, providing both cable and wi-fi internet to the downstairs. 1 router upstairs connected to the downstairs router ...
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10 views

Does this Broadcom 802.11 wireless adaptor support 5ghz?

After many hour I found this one How do I find out if my laptop's Wifi receiver supports 5Ghz networks? Bottom reply states that netsh wlan will display the answer, mine shows no a. band yet ...
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2answers
40 views

UDP socket flushed. What are the limitations? When it blocks?

I plan to send high amount of data through UDP (video streaming), and I thought in a system that requires to detect when an interface has reached maximum upload bandwith. I know that when I flush the ...
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16 views

traceroute just showing a single hop to any host, no matter how remote?

So, at a friend's place, no matter where I do a traceroute to, I always get an immediate response of exactly one hop, just as if the computer would be directly connected to the target system. IIRC, ...
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Solution for 3 TVs to loop video that can be updated remotely? [on hold]

I'd like to run 3 HDTV monitors to display 3 different looping videos for a kiosk-like environment, and have some questions: I was thinking of just using the USB ports on the TVs to play video, but ...
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Accessing Web Server Using Private IP Over VPN

This question could also fall under the category of networking I suppose, but I'll give it a shot here. Here's the situation: We have web servers at work that we access using the IP Address (no ...
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22 views

Hidden network seems off and how can I increase my network security

For the last few week a hidden network keeps popping up in my network list. Every time this happens our internet drops is speed and our latency rises. This give me a feeling something is off so I have ...
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1answer
23 views

Create guest network and prevent access to my internal network using DD-WRT

As my guests at our home like to have some kind of internet access to show us their photos. We'd like to create a guest network for them. My idea: However, as I don't trust our guest devices I'd ...