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

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Cannot connect to WiFi or Ethernet (More info…)

I've been having a wifi connection problem on my Dell Windows 8.1 laptop for some time now. I know it's not a problem with the Wifi because my other devices (Mac laptop, another older Windows 7 ...
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2answers
28 views

Waiting for google.com

I'll be the first to admit I'm not an expert at administering a home network. I'm a software engineer by trade so my expertise lies in code operations, not networking or administration. I'm having an ...
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Boost wifi range from laptop to connect to university network from my home

I bought a Netgear R7000 hoping that I could use it to access my University network from my home, which is very close to the university (across the street). Netgear technical support showed me how to ...
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1answer
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Using tcpdump to monitor Chromecast activity

Background: On my home setup, all traffic is routed through a single TP-link router which currently has OpenWRT intalled. I set up DNS ad blocking with a pixelserv setup, so all devices on my network ...
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2answers
92 views

Connect to a computer behind a router I do not control

My ISP has assigned a single IP address for my entire apartment building (the ISP has an exclusivity contract with the building). The 'WAN' address my router sees is '192.168.1.130' which tells me I ...
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4 views

Wlan with wpa_supplicant under NixOS?

How to set up networking (wlan) with wpa_supplicant on NixOS? Whenever I try to connect to my local wlan network, I get CONN_FAILED as reason, which is a bit uninformative. It also tells me that my ...
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1answer
5 views

OS X OpenVPN packet filtering

I currently have an OpenVPN connection running on my Mac. By default, all of my network traffic is currently being routed through this connection: http, ssh, etc. I'm attempting to use packet ...
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1answer
13 views

Poor signal strength from Unifi AP

(Moved from Network Engineering Stack Exchange) I recently bought a Unifi access point to switch my home network over to wireless, however my devices report low to average signal from the access ...
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8 views

I cannot capture DHCPv6 packets on GNS3 using Wireshark

I have got a router set up as a DHCPv6 server connected to a host that gets an IPv4 & IPv6 addresses from it, however I am not able to capture any DHCPv6 packets at any point of the connection. ...
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9 views

iptables does not redirect my HTTPS request

I configured my tables to redirect all traffic to a static IP. for ports 80, 443 + any port (NAT-DNAT redirect withour having specified ports). If I enter an IP:anyport or an url.ext, it does ...
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5answers
42 views

Twisting a LAN cable in the middle of another one

Theoretically if i have 3 devices and i want to connect them through a lan cable, can i connect 2 of them with a LAN cable, then cut it in the middle and twist in a third cable. Will it work as three ...
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8 views

How to ensure iptables DNAT redirect all, to work with domains?

When redirecting all sources (any port) to my router IP, it works with IP. I do this with iptables, Nat/DNAT PREROUTING. $ iptables -t nat -A PREROUTING -i wlan0 -p tcp -j DNAT ...
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1answer
17 views

From IpTables NAT/DNAT redirections, how to display a domain.com url in browser?

Status : - My machine : linux debian-based (cube-shaped), acting like a router - I redirect all incoming traffic to its router IP 2.20.200.1 Problem: However, the url/ip hit by the client (that ...
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2answers
20 views

NAT iptables : why wrong/empty destination in saved config?

Here is rules I put in iptables : $ iptables -t nat -A PREROUTING -i wlan0 -p tcp --dport 80 -j DNAT --to-destination 19.11.11.1:80 $ iptables -t nat -A POSTROUTING -j MASQUERADE ...
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50 views

Which Remote Desktop Software is Fastest? [on hold]

This question probably has another answer somewhere else on one of the other Stack Exchange sites, (if so, I'm sorry!) or somewhere else in the deep dark depths of the Internet. However, I'll still ...
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0answers
13 views

Wireless network setup for 4 story townhouse

I currently have a Wireless N router + DOCSIS 3.0 modem on the 3rd floor of my home, and would like to have wifi access on every floor. I have very little background in networking, and was wondering ...
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17 views

Accessing a virtually hosted IIS site from host machine (OSX)

I have an IIS site running in a Windows 7 virtual machine (parallels). I've tried every which way to access the site from my OSX host machine with no luck. Networking is shared in parallels. The IP ...
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2answers
45 views

opening a website via its server ip

I don't want to use a website via its domain address, so I came with the idea to use its IP address to reach the website. The problem is when I open the server IP address, it just says "It works!" ...
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0answers
27 views

In Skype, can I use a camera installed on another computer?

I have two laptops: one has a camera but it is too slow to make a video call; another if fast enough but its camera is broken. How can I make Skype on the fast one to use the camera from the other ...
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0answers
16 views

What is the procedure of gaining and maintaining wireless internet?

There are a lot of parts in the procedure of having and maintaining a Wifi connection (or lack thereof) that sometimes makes me confused as to what the heck is going on when I try to connect to a ...
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0answers
15 views

uTorrent: peer list is populated with myself and download stops

I'm using uTorrent 3.2.2 (not the latest version), because reasons*. Today I've spotted: torrent is not being downloaded. I opened the peers tab and discovered, that all peers are me. They have my ...
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24 views

OpenVPN starts from CLI but not using “service” or on boot

I've set up an OpenVPN server (loosely following this tutorial) I can start the service using sudo /etc/init.d/openvpn start but if I use sudo service openvpn start I get the following error: ...
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1answer
18 views

How to config windows firewall so VM Host-only can ping Windows 7

I start a VM (Linux) in host-only network connection (manual IP : 192.168.8.123) under Windows 7. After turn off the VM firewall, I can ping VM from Windows. However, when I try to ping from VM, it ...
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40 views

Can not bypass MAC address filtering

I add a white list filter by mistake to my wifi modem router, so I want to change MAC address to that IP. I run this command: ifconfig wlan0 down ifconfig wlan0 hw ether xx:xx:xx:xx:xx:xx ifconfig ...
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1answer
20 views

How do I find the MAC Address of every networking of my notebook in win 8?

I tried getmac command in command prompt. What are those '3' devices of which the MAC Address is represented? I Also Tried this Command: ipconfig /all Now, What are these "5" Mac ...
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22 views

calculate speed of transmission in binary system

File 8 GB was sent at the time of 5 hours. Calculate average speed of transmission in Mbps I know this way 8GB = 8192 MB 8192 MB = 65 536 Mb 5 h = 18 000 s 65 536 Mb / 18 000 s = 3,64 Mbps But ...
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1answer
28 views

What does a router do?

This question in its current state may be too broad, so I'll clarify. Obviously, most routers today are a combination modem, WiFi transceiver and router, taking the signal off the phone line, ...
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2answers
24 views

How can I put my CentOS on public IP so that I can access it WinSCP from home?

I have a centOS system at office and I want to access it from home via WinSCP. I have a static public IP at office. Please help!
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1answer
13 views

What does 300+300mbps on a wireless router mean?

I'm looking at a router on amazon, the netgear n600. I'm getting it for the dualband. Well one of the features say 300+300mbps. Does that mean each channel operates at 300 mbps? Does it achieve ...
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2answers
21 views

Laptop won't detect wifi after an issue with WiFiKill

My brother used WiFiKill on my laptop as a prank. I think I turned it off by simply clicking Start on the top middle of the page, to change it from Start to Stop. I thought that had solved the problem ...
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1answer
37 views

Is it possible to track incoming and outgoing internet packages

I have a simple program that synchonizes with the internet in certain amount of time. I would like to see what data the program sends and receives. How can I watch this data or at least show the ...
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16 views

Gateway set to unexpected PoE interface in ADSL modem

This issue came up during a routine check on my router/modem settings. Details follow. I use a TP-Link TD-W8901N ADSL modem (specs here) facing the internet. The modem manages a 192.168.1.x subnet, ...
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18 views

Debian server management GUI

I have to manage a number of Debian servers (one as the KVM host, and the others as virtual servers for File management, Infrastructure management - DNS, DHCP etc, and finally a Debian based ...
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27 views

How to Identify Class A, B and C IP addresses that look similar?

The question I had come up on my CompTIA test was Which of the following is a private Class B IP address? The choices were A 10.0.15.1, B 172.16.0.1, C 172.16.1.1, D 192.168.1.1 We know that within ...
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2answers
23 views

How to initiate remote access from controlled server machine?

Assume our windows 7 machine A has no public IP - it's connected to LAN and has IP like 192.168. This machine has access to Internet. How to initiate remote access from this server machine A to be ...
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21 views

Internet sharing

I want to share internet connection from my wireless adapter, my modem router combined in one device is configured on bridge mode that allow only one connection at time.... the cause is my internet ...
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0answers
13 views

Need to access DSL with VPN

My Windows 2012 R2 server is connected to cisco VPN router with static IP. I want to connect to internet. I have connected second eth card to ADSL router. But there is no internet connection. The ...
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1answer
11 views

Traffic shaping during a MITM attack

In my local network there are about 10 computers. I setup ettercap to do arp poisoning between a particular host and the gateway and now I can see that host's traffic. What I wanted to do next is to ...
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27 views

HTML5 web content really slow, somehow caused by ethernet driver

HTML5 content is really slow for me, browser independent. It seems that my ethernet driver crashed recently, causing HTML5 videos and other content to load slowly, get stuck etc. I updated the driver ...
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26 views

accessing outside my network through a server

I have: A user-machine (embedded device where I can't log in to console or ssh) , that doesn't have access to lan 192.168.5.x B a server debian that sees the A's network , but is in 192.168.1.x ...
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9 views

How to configure charles to monitor traffic with local server? (osx)

I'm trying to set up charles to monitor traffic with a server that is running locally. I think I got this working before with another server but for some reason it's not working with this one. The ...
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41 views

Windows 10 unable to connect to Internet through proxy

I am on Windows 10 Insider Build 10162. I use a proxy to connect to internet. Internet works fine on both Microsoft Edge and Google Chrome. But when I try to ping Google.com from cmd, it says "Request ...
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14 views

wan was exceptionally disconnected

i have asus router and i have problem . i saw my router system log and here was one unknow text "WAN was exceptionally disconnected" but 4 second again access net , what should do i that don't ...
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2answers
21 views

Advantages of Multi-Tier and Multi-box firewalls? [on hold]

I'm currently doing a University project and am having trouble getting my head around a few concepts. One reason is the looseness of terms in IT, with network tiers referring to several things ...
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14 views

How would I configure a dedicated server only to be accessible via vpn

I have a server inside my lan. It runs owncloud and some applications for development purposes: docker, wildfly, tomcat, samba ... My workflow: I use a openvpn appliance to get inside my lan and then ...
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1answer
23 views

Pushing routes in OpenVPN not working on iOS?

Because of a certain public government firewall with deep packet inspection preventing OpenVPN out of the country, I am trying to run OpenVPN over SSH. I also wanted all traffic to run through ...
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18 views

Disconnecting from networked computer

I was given my old computer at work when our company merged with another, but its still connected to the work network and requires my work user name and password.. Is there a not terribly complex way ...
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2answers
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+100

Expanding wireless coverage: What are the differences between LAN to LAN and LAN to WAN when it comes to connecting two wireless routers?

I'm trying to link two wireless routers with an Ethernet cable in order to expand my wireless network. Both routers need to provide wired and wireless Internet access. I'd like to know the ...
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14 views

Ubuntu server as DHCP server for dual stack

I currently have an Ubuntu server on VirtualBox set up to give hosts on my GNS3 topology IPv4 addresses, and it is working without issues. However, I would like to have that same DHCP server give out ...
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1answer
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What is MASQUERADE made for?

A simple redirection is used on my server, with iptables rules : $ iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 13.37.42.1:80 $ iptables -t nat -A POSTROUTING -j ...