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

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Cannot see Win 7 PC on Network but it can access Internet

I have a Windows 7 (64 bit) on one room that has a printer attached. I have been going through the LAN from my desk (which also has Win 7 64-bit) to print for a long time. Something has changed, but ...
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Null Session Share not working on Windows 7

I have a computer running Windows 7 SP 1 Ultimate (IP 192.168.11.100). I need to create a Null Session Share (named WIA_RIS_SHARE) for Serva PXE Server to be able to install Windows XP via networking. ...
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7 views

Finding the IP Address of a Router in a Daisy Chain

I'm trying to forward a port to my home computer so I can SSH to it when I'm away from home. Because I cannot get a good connection to my modem/router, I have to connect a second router to it. My home ...
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1answer
9 views

Why doesn't iptables accept IP address as source?

The command sudo iptables -t nat -A PREROUTING -i eth1 -s ! 192.168.178.30 -p tcp --dport 80 -j DNAT --to 192.168.178.30:3128 fails with Bad argument `192.168.178.30' Try `iptables -h' or ...
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How to redirect all traffic from one network interface to another on the same linux host

I am writing testcases for a network switch. This involves sending something on one network card (via the switch) and checking that it is received on another network card. I want to disable all direct ...
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2answers
19 views

Connecting two routers to create two home networks causes issues

My cable provider provided us with a gateway modem that has it's own built in router. I need to set up two local networks, one for guest and one for admins. The reason is because I have a Western ...
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2 views

Share a tun0 interface between docker containers

I've successfully built a working standalone openvpn docker container: # docker run --detach --publish 100.1.1.1:443:443 --name foo_openvpn --cap-add=NET_ADMIN --device /dev/net/tun -v ...
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1answer
21 views

Accessing a computer behind a router from the Internet

I have a manufacturing machine that uses PLC's. One of the PLC's needs to have programming updated. PLS'c are updated using proprietary software sold by the PLC maker. In this case the software is ...
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16 views

Route traffic from specific application to a different port

I have an application called Server on localhost which binds to port 1000. I have another application also on localhost called Client which connects to 1000 in order to communicate with Server. I am ...
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16 views

ProcMon - catching incoming file accesses from the network

I'm currently using procmon to chase down a problem I'm having involving network files. Another PC on the local network writes small "command" files to the target machine, which then consumes them - ...
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1answer
17 views

Man in the middle using iptables

I wish to test a subsystems which communicates with another subsystems via tcp. I have used the following: "iptables -A OUTPUT -p tcp --dport "+port_number" -j DROP" to stop the traffic on a port ...
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1answer
8 views

How can I access files on Windows Server from using a web proxy Pfsense?

I have over 25 pc's all with W7 and XP, using a web proxy based on Pfsense. Someone told me(my boss) that I need to open the port 445 to access the Windows Server 2012 R2 that is located in another ...
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1answer
15 views

Custom Windows shell hosted on the network

We have a custom kiosk-style executable that we are using as a shell on Windows 8.1 machines. We'd like to host it on the network so that it's easy to update as desired. The problem we have is that ...
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21 views

Disabled firewall on a Asus router and now can't connect

I have an ASUS RT-N12 wireless router with WAN web access. A dummy of the router web interface can be found here. I had "Enable Web Access from WAN" on and was able to access the web interface via a ...
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1answer
13 views

Why did I get this output while using traceroute with openvpn?

I set up a vpn using openvpn command with a certificate bundle downloaded from vpnbook.com. Then when I did traceroute www.google.com I got all stars output. I want to know why I got that output. ...
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2answers
46 views

Wifi router bridging

My primary router is HG 8247 Huawei ONT Device with primary gateway 192.168.100.1. I want to extend its range using a TPLink WR740N i have lying around. I have done the following without success: ...
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Mac OSX unable to SSH connection reset by peer

I have an SSH server running at home and I am trying to connect to it from school. But when I try to connect I get: ssh_exchange_identification: read: Connection reset by peer However, when I ssh ...
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1answer
16 views

Can PXE be run over a multi-port bridged nic?

I have a system which i've configured and tested with one ethernet port that acts as a PXE server, and it works. I also have a quad port nic sitting around I'd like to utilize so I've been wondering ...
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16 views

Wireless router error 'cable unplugged'

I bought a wireless router and set it up, it worked the first time, but I forgot the admin password so I had to hard-reset the router. After that it's unable to connect to my ISP again, it keep says ...
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21 views

Can I access this network? [on hold]

I want to access this course - https://graphics.ethz.ch/teaching/cg14/notes.php but I when I click on any of the slides it gives me this error - ...
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1answer
20 views

How do I change the order of WiFi Networks in Windows 8.1 to give priority to one over another?

In Mac OS X you can change the order of remembered wireless networks by moving them up and down the list. This will change which WiFi network gets connected first. I can't seem to find the equivalent ...
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1answer
30 views

Data from two modems for faster browsing?

I'm stuck with DSL Lite (a slow Internet connection). Is it possible to speed up my AT&T 'DSL Lite' connection by augmenting it with some bandwidth from my Cellphone's tethered 'hot-spot' ...
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9 views

Can I bridge 3 Internet Connections in Windows 8

I have 3 DSL connections with three different modems which goes into three different lan cards. Now I have seen in some sites that you can bridge these three connections into one. So using bridge ...
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2answers
36 views

Can't ping computers via a bridged connection

I've got the following setup: PC running Windows 8.1 with a Wifi card connected to the local network and an ethernet cable running to a laptop. Wifi and Ethernet connections are bridged. Laptop ...
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usb0 network interface does not show up on Debian 8

I'm trying to get USB tethering to work between a Nexus 5 phone (running CM11) and my desktop running Debian 8. I connected the phone to the computer via USB and got these messages: [14972.580738] ...
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Windows 98 networking doesn't work in QEMU

I installed Windows 98 in QEMU. I want to run networking in user mode. I start it with qemu-system-i386 win98.img -m 256 -soundhw sb16 so it should be using default network hardware and probably ...
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1answer
10 views

Improving EC2 ping times from home

I've been trying to run a gaming machine in EC2 following the excellent blog post by Larry Land here. The problem I have is latency from my home to my nearest AWS region. I get a ping of around ...
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1answer
12 views

Network share readonly for Java Application

We have a windows server with Windows 2008 R2 SP1. This server provides a network share, let's call it Data. The permissions are set to Read/Write for all domain users. Multiple PCs (PC1 to PC4) in ...
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1answer
15 views

Sharing Android Phone's WiFi connection with OSX

Is it possible to tell OSX to connect to an Android phone (Sony Xperia Z2) via BlueTooth / USB and use the WiFi connection that's setup on the Android phone? I've tried to setup Bluetooth PAN on the ...
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13 views

Why can I access a domain from a computer and not from another one on same local network

I registered a new domain name but forgot to setup dns servers. I typed the domain on a computer and was redirected to registrar parking page. So I added dns server and could access the domain on any ...
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2answers
37 views

How can I connect to Wifi and Wired LAN on the same computer?

I recently bought a Brother laser printer with built-in WiFi. I purchased a USB WiFi adapter for my Dell desktop PC to connect it to the printer on the network. The PC is also connected to the same ...
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3answers
37 views

Configure router to receive internet connection from laptop's ethernet port

For some reason, our government ISP filters our ADSL connections greatly when using routers, while if we connect directly our computers to the ADSL modem we get the speed we pay for. So, i am using ...
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UDP traceroute delay?

We are seeing timeout packages when running traceroute command between two Linux systems on a private network. However, we do not see such symptoms using TCP or ICMP over traceroute. This is a private ...
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Inter host name resolving

I am trying to setup a lily cluster where in it talks about Network Configuration which I am unable to understand.Kindly explain me the network configuration and how am I supposed to do this ? ...
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1answer
22 views

Laggy SSH sessions on local network

I have two machines: Windows 7 connected by ethernet to a router NixOS laptop, connected wirelessly to same router My issue is that sshing from Windows to NixOS is extremely laggy. If I ping NixOS ...
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1answer
28 views

How to connect to a device within my network but connected to another router

I have a main router, which is connected to my ISP. Then, I have two sub-routers and a NAS-server attached to my main router. See image below: Image Problem: I cannot access any other device in my ...
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Steam can only connect in TCP mode, cannot join any gameservers

A few months ago Steam stopped being able to log in. I thought there may be a server outage so I waited a few days but when it still didn't work I started investigating. I ran through Valve's Network ...
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3answers
26 views

Will home router retain dynamic IP?

The cable from my ISP is connected directly to my computer. Problem is I have a dynamic IP address that changes every time I disconnect and reconnect, otherwise it will not change by itself if I stay ...
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1answer
18 views

PC accessing from remote site

I have Head Office and remote site, both location have different IP Addresses (Head Office 10.10.1.x mask 255.255.255.0, Remote IP 10.20.3.X mask 255.255.255.0), my scenario is that I have a PC IP ...
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1answer
17 views

How is mac address shared from one host to another?

If i have two systems in the same network, how is the mac address shared in the network access layer? By this, I mean how is the destination mac address known to the source?
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1answer
37 views

Cannot access my external IP address from LAN [on hold]

I got a personal PC and I use Internet service from a local Internet provider. I checked "What Is My IP" of my public IP address. I then typed this public IP address into my web browser; then it said ...
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20 views

Routing RDP traffic to Windows 7 VM using pf

I have a machine running OS X Server which has a Windows VM running via Parallels. I need to route traffic from the external adapter on port 3389 to an internal/virtual adapter. I have tried quite a ...
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Put VPN at the bottom of ip route in linux

Ok so here is my ip route before I connect to my VPN default via 10.0.1.1 dev em1 10.0.1.0/24 dev em1 proto kernel scope link src 10.0.1.254 10.0.1.0/24 dev em2 proto kernel scope link src ...
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2answers
14 views

Private ip dhcp for pxe boot

Sorry this might be a stupid question as I don't know the exact term to google. But this question has been in my mind for a while. Let's assume machine A is the isc-dhcpd server with two interface. ...
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Why my mobile device was not assigned to any COM port after Bluetooth connection was established? [on hold]

I am following this tutorial: click To be able to establish SPP (serial communication with my android phone). However, I am not having COM port assigned to the mobile device, neither I see SPP option ...
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1answer
25 views

virtualbox - access host (linux) filesystem from guest (linux)

I need to access files on a linux host from a (linux based) live-cd virus scanner running on virtualbox. The virus scanner only allows me to configure the network's IP address etc. Any chance to do ...
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virtualbox: How is the Gateway IP of a guest OS determined when configured as NAT

In a host system, a gateway generally refers to the IP address of either a router or a network segment. Generally, the output of route PRINT or route -n corroborates to the actual IP of my gateway. ...
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26 views

TCP packet issue with 802.11ac but not with 802.11n on an Android Nexus 6

I have an Android Nexus 6 that connects to my computer via an ad-hoc network. When my phone connects to the 802.11n card (TP-LINK 300Mbps Wireless N), the bytes are sent with no issue; verified with ...
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2answers
23 views

Share 3 Internet Connections with one router

I have 3 internet connections with three ADSL modems (three modems doesn't have wifi). I own a router which has 4 Lan ports and 1 Wan port. Now I want to connect the three ethernet cables (of the ...
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1answer
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RJ45 connector crimping… Does it really make a difference as long as the cabling is “straight”?

Yes I am aware that there are standards on how to crimp a RJ45 connector. But my question is... does it really make a difference as long as both ends have the same color coding? Technically, it ...