For questions on connecting devices together so that they can communicate with each other, as well as on networking equipment such as routers and switches.

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147 views

Is it possible for WiFi adapter to degrade?

Recently i've started to get high package loss ratio while connecting to the internet on my laptop via WiFi adapter. I made following experiment: my laptop and laptop of my friend were on the same ...
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1answer
1k views

Can't reach Ubuntu guest vm from Windows host using VirtualBox Host-only interface

I used to have this working, but had to reinstall VirtualBox this morning. I have Windows PC with VirtualBox installed. I have an Ubuntu VM. I am unable to access services on the Ubuntu VM from the ...
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1answer
103 views

Analysing Akamai traffic [closed]

There's a site from which I have to get information from. This site streams a video file leaning against Akamai platform. I tried everything I know to gather information (the real video's url) while ...
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0answers
477 views

iptables snat does not change source IP

I am on ubuntu (with IP 10.0.0.1) trying to snat packets going out from port 9090. I want to change the source IP to 10.0.0.2 I have added the following rule through iptables: # iptables -t nat -A ...
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1answer
2k views

VPN Error 800 - Can't connect to network

Every time I am trying to VPN into the server, it comes up with: "Error 800: Unable to establish the VPN connection. The VPN server may be unreachable, or security parameters may not be configured ...
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1k views

How to fix LanmanServer and srvnet error?

We have a PC running Windows7 Enterprise. The PC can access the Internet and communicates with other workstations (i.e: I can RDP connect to it), but it cannot access any file shares. I tracked down ...
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1answer
3k views

Issues with Network interface card in CentOS 7

I have just installed centOS in machine having 4 NICs. CentOS detected 2 of them but two or them are still missing from network manager. Both two of them are of same kind, I suspect that it's a driver ...
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0answers
59 views

Some sites load very slowly or not at all

I am staying with my friend in her dorm room. She doesn't have wifi, we're just using one Ethernet cable she has. While her computer (win7) works as expected, when I plug in the cable, some sites are ...
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0answers
144 views

Multiple NICs on a same subnet

Although there are several articles discussing about the issue, I need some advice because I am still facing the problem. I have 3 interfaces on a virtual machine (cents 6.6) [root@localhost ...
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0answers
248 views

Windows 7 IP routing

I'm really stuck on this one and I have been told stack over flow is a great place to come for advice. I have a machine running Windows 7 Professional with two internal gigabit NICs. I have enabled ...
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2answers
5k views

Can ping another compurer by IP but can can't folder/file sharing in Windows 7

I have some computer with same workgroup and one of them is a print sharing server (localPrintServer machine). All computer can connect into localPrintServer by \\localPrintServer or \\192.168.1.2 ...
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1answer
26 views

Running a dedicated security network

I'm trying to move my four bandwidth hungry IP cameras over to their own personal network. I need software that monitors them 24/7 for motion and that slows down my main router. If I were to get ...
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2answers
565 views

Can't create virtual switch in Hyper-V on Windows 8.1 laptop

I'm trying to create a virtual switch on a Windows 8.1 laptop. It has a physical WiFi network and a USB connected Ethernet connection. When I try to create any sort of virtual network ...
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1answer
46 views

Connect Macbook and Android App without internet

I have a computer(Macbook) that is running an Apache xmlrpc server and an Android app running an xmlrpc client. The short story is that I need the app to be able to make rpc calls to the computer, but ...
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0answers
39 views

Eliminating extraneous network traffic

If I wanted to get the best performance (high data rate, low latency) out of an isolated gigabit ethernet LAN (N.B. NOT connected to the internet) I would assume this would occur when there was no ...
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1answer
162 views

I want to host my website from my home network

I want host my simple HTML site on my home network using Apache Tomcat 7 I have domain which is perfectely pointing to my router's IP Address I did forward my port (Router Port) Like below Screen ...
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1answer
367 views

Share Internet in LAN through dongle

I've one Mi-Fi data dongle (Tata Photon Wiz Wi-Fi) for an Internet connection, Netgear Wireless-N300 Modem Router, Printer, Iomega iConnect, a couple of computers (Ubuntu)/MacBook Pro, and ...
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0answers
249 views

Canon printer does not print over the network at times

We've been having this printing issue for the last two months where the printer stops taking prints over the network at a certain point. Each and every time we need to reset the printer by powering it ...
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1answer
175 views

NETGEAR Wifi drops sometimes randomly

Not sure if this is the correct Stack Exchange site to ask this question but it was the closest I could find. I have a NETGEAR b90-755025-15 router with AT&T service, and I have download speed ...
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0answers
57 views

After running getmac on a Gigabyte GA-H81M-HD3 motherboard I get “No adapter found”

On PC using a Gigabyte GA-H81M-HD3 motherboard—with on-board LAN support—running Windows 7 64 bit I run getmac.exe command. And get the message that “No adapter found.” But hen I enter to BIOS ...
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1answer
261 views

Getting IoT devices to connect to an authenticated wifi network

I have several Internet-of-Things devices such as the Intel Galileo and Raspberry Pi. I'd like to connect these up to the internet obviously, because without it they're just things. Unfortunately my ...
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1answer
242 views

Do these sites belong to akamai/and are legitimate? (e.g hosted-by.illuminati.es) [closed]

I was looking at resource monitor, under the network tab. I was viewing steam.exe and steamwebhelper.exe (official signed exexutables from valves steam service.) I was alerted when I saw them with ...
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2answers
473 views

Bad connection to router despite being 10 feet away

My router is in my living room and my laptop is in my bedroom. The distance from the two are literally 10 feet apart. I currently live on the 16th floor of an apartment building in Shanghai. Now for ...
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1answer
728 views

Mac can't resolve PC name on a local network

I have set up a simple http server on my local Windows 7 machine and I can access it from my Mac using the ip address and port number. However I can not access it using Windows machine's network name ...
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1answer
81 views

Unable to Set up DHCP and TFTP on Ubuntu

I want to transfer my kernel image to beaglebone black, and the guide mentions that I should have already set up DHCP and tftp on the host machine. I have set up the TFTP using: sudo apt-get ...
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1answer
84 views

Can I use a wireless router on an existing wireless network to make a wired connection to a computer?

Its a Netgear WNDR4300, I don't see anything mentioning bridged mode anywhere. I would like it just temporarily connect it to a computer, but I might have to put some other firmware on the router to ...
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1answer
104 views

Turn local Win7 user account into network user account? [closed]

I have a local administrator account on my gaming PC, and it is set up to my liking. I've recently added another PC to my home network, which I intend to use as a file server, TeamSpeak3 server, and ...
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1answer
34 views

How does OS X work when connected to multiple internet connections?

Macbook Pro is connected to internet connection E via thunderbolt/ethernet and to internet connection W via WLAN. What defines which connection is primarily used and what happens if one or the other ...
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1answer
207 views

Windows 7 PC refusing connection from Windows XP PC. System Error 67

So I have several PC's on a small local network. Server - Windows 8 Professional Client 1 - Windows 8.1 Client 2 - Windows 8.1 Client 3 - Windows 7 professional Client 4 - Windows XP professional. ...
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2answers
350 views

Multiple internal networks on Virtual box (CentOS)

I have 3 NIC's (internal network) on one Virtual box Machine(CentOS 6.4) each NIC has its own network name intnet1,intnet2 and intnet3. So how I understand this is eth0 is connected to internal ...
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1answer
61 views

Household Bluetooth network [duplicate]

What is a best way to have ability to connect Bluetooth enabled PC and cellphone all over the house? Connection possible only in same room with PC, i want to extend now. Does passive repeater (two ...
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0answers
138 views

How can I connect to UNC path on an external server in Windows Explorer?

I am using Windows Explorer and would like to connect to a certain IP address. After that, I want to connect to a different IP address through the server. Ex: A -> B -> C A is my current computer. B ...
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1answer
484 views

Debian ignores /etc/sysctl.conf

I have a problem with limiting the number of concurrent network connections. I just need to set them so that my machine will never produce more than 200 concurrent network connections, but I am unable ...
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1answer
87 views

Interent Connection stop and reconnets intermittently, while ping requests go through

Good day all I will keep this short, for the past week my internet has started becoming jittery, It will work fine then suddenly it will "go off", how I know this is my google drive says cannot ...
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0answers
4k views

Windows 7 PC refusing to accept RDP connection

We operate a mainly Mac network but our 3 main video rendering machines are all Windows 7 PCs. 2 out of the 3 are accepting RDP connections but one of them just refuses to work both internally or ...
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1answer
141 views

IpTables -j REJECT to instantly block the loading on user browser

I have been searching for a solution to notify the browser on user that the request is Rejected so stop loading it. Because I have blocked facebook and every page that have a facebook plugin is ...
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2answers
9k views

Block websites to a certain IP range with mikrotik router

I have a MikroTik Router 951Ui-2HnD that connects my computers with the ISP. I want to block Youtube and Facebook but only in a few computers. I created a Layer7 Protocol with: Name : Denied Websites ...
8
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1answer
826 views

I have a 3.3 Volt PCI ethernet card working on a 5 Volt PCI slot. How is it possible?

This is the design for PCI slots: As you can see, there are 32/64 bits and 3.3/5 Volts. For what I know: 32 bits PCI cards can work in 64 bits slots of the same voltage. 64 bits PCI cards ...
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1answer
309 views

How to setup this home network to allow connection between two subnets?

I have my home network currently set up like this: The Thomson router (192.168.0.1) is from my ISP and is pretty crappy. I have a much better Draytek Vigor 2820vn router that allows me to use ...
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1answer
61 views

Internet connection disconnects with no apparent reason

I have a situation where one minute the internet connection on my laptop is working perfectly fine then all of a suddend, it just disconnects. Here's an example of a ping command running when it ...
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4answers
118 views

Is it possible to use a ethernet switch to provide two different routers with the same internet?

Say I wanted to created two networks. One for the more privileged group of people. The restrictions on this network would be less severe. Then the other network would be for the "guests" or those ...
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0answers
126 views

Internet connection lost every time computer sleeps or shuts down

I have an ADSL internet connection that works through a modem (actually a router - Aztech ADSL2+ Ethernet Bridge Router DSL-600E). I know that there's a way to put in my username and password to my ...
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1answer
46 views

Why doesn’t Windows Vista get an address from the DHCP server?

My Windows Vista PC does not get an IPv4 address from the DHCP server; viewing the network properties shows something (likely the DHCP request) being sent, but no packets being received. Manually ...
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1answer
89 views

Network connection issue. Connection breaks sometimes

I have internet delivered by wifi to my house. Every day about 20:00 i have problem with browsing. I got information form firefox like "Unable to connect" then i need to refresh couple times to load ...
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1answer
48 views

Is it possible to mirror a network port to evade blocked ports?

I run a samba server on my dedicated linux machine, but my ISP blocks port 445. I just changed the host port to 5601, which works good for me, as I'm mounting it via fstab on linux. However I also ...
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1answer
149 views

How to connect 3 ip camera through a router to a pc?

I want to connect 3 IP cameras to a pc and capture their images in fair fps and process their image on pc by a program. I don’t need to capture the images from all of 3 cameras at the same time, just ...
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3answers
481 views

How to block network traffic on ubuntu gateway via arp table

I have a network with 80 PC and a ubuntu 12.04 as GW. For security reason I want to limit the Computers connected on this network using an ARP precompiled table. In other words I want a tool that ...
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1answer
159 views

Is it possible to setup a private IPv6 subnet and route to the Internet?

I am still trying to figure out how IPv6 works. But I had a question. I currently have an pfSense firewall attached my Comcast service and configured with to request a v4 and v6 WAN address from ...
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2answers
456 views

ThinkCentre M71e PCIe network card not showing up

I bought a ThinkCentre M71e (3134-C4U) with the intention of using it connected to several separate physical networks. I bought a PCIe Network card (SuperMicro AOC-SG-I2) with two additional network ...
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2answers
495 views

remote file copy in windows

I am running an automated process on one particular machine, variously a Windows 7 box or a windows Server 2012 box. These boxes are connected to a file server over the network. The network is a ...