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

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What is needed to access a CCTV system (based on a static IP)?

I was wondering (since I'm a beginner or intermediate in computer networks), what do you need to access a CCTV system. Let's suppose we have a CCTV system configured with an username and password on ...
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4 views

Can I connect an Analog Telephone Adapter (ATA) analog port to an Analog PBX?

I was wondering if it's possible to reuse my existing analog PBX and all the current line distribution inside my home, but using a VOIP line instead of an analog one. The new configuration should be: ...
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4 views

RTNETLINK answers: File exists Failed to bring up eth0

I have 3 identical servers which I SSH into, but couldn't on one of them after a restart. service networking restart just bring up "RTNETLINK answers: File exists Failed to bring up eth0" route just ...
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0answers
11 views

difference in openvpn protocol between android and linux

I recently tried to connect with my custom openvpn server through my company network. I use a rather vanilla ovpn setup for this matter: tcp over port 443 (with comp-lzo) with public key auth. When I ...
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17 views

Slow network speed on a single computer

I'm having a difficult time diagnosing a network issue on a new laptop I bought. It uses Windows 8.1 while all my other computers use Windows 7. My network is simple and contains the Verizon FiOS ...
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1answer
12 views

How do I set up a Synology NAS so it can be accessed by URL/name instead of by IP address

Example On Windows, I open Run with Win+R and enter \\192.168.1.30. The trouble is, every time the NAS reboots, that IP address may change. Question So that's why I'd prefer to access the NAS' ...
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18 views

Wireless does not work on laptop

I have been having problems with the wireless network connection on my laptop for a while. (Samsumg Np905S3g) All drivers should be up to date, as well as windos updates. I have tried a clean install ...
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10 views

Not registering on Asterisk over VPN

I want to work in local area from home, I configured OpenVPN on my Asterisk server (it is only one Linux server in LAN), it works fine. I enabled forwarding on Asterisk server, and client now can ...
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1answer
7 views

Assign multiple IP to Ubuntu Server

I want to assign additional IP to my Ubuntu 14.02 server. My configuration is like: auto eth0 auto eth0:0 iface eth0 inet static address xxx.xx.xx.xx netmask xxx.xxx.xxx.xxx network ...
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2answers
38 views

IP Address 0.0.0.0 is used or not? [duplicate]

I really wonder if an IP Address with all its bits off can be used or not. Please do answer if you know where its used or it can not be used.
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7 views

Round-Robin Outbound Source IPv6 Iptables

I'm trying to do this: http://linuxbutler.com/tcpip-outbound-round-robin-load-balancing-iptables/ But with IPv6. It doesn't work, however. Seems nat doesn't exist in IPv6. Can you guys help me out ...
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1answer
17 views

How can I open ports on my Linksys RV082 router?

I bought a Linksys RV082 small business router. It's a nice 8-port wired router with a lot of configuration options, and so far it's working pretty well. One of my computers on the LAN is a server ...
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1answer
16 views

Accessing to IP cameras behind TL-MR3020 nano router

What I want to do is connecting several IP cameras to my LAN with wireless router/AP. I have a main USRobotics modem/router/AP (192.168.1.1) and all my computers are connected to that one using ...
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14 views

How to use “ip link add” on Ubuntu

I am new to Ubuntu network administration. Can someone tell me what the command ip link add does? I tried to google it, and I can't find any useful examples.
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1answer
12 views

Will a NAT router try to talk directly to a device on its subnet or only through its gateway?

I know that this is pretty ambiguous because many factors contribute to how traffic is routed but is it expected behavior that when clients on a NATed network try to send a packet to an address ...
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8 views

Wifi related weirdness / dropping connection

I'm having some weird wifi issues at home which I cannot figure out. My problem is that the wifi connection randomly drops and, sometimes, will not reconnect. My home property is an apartment with 3 ...
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1answer
15 views

Iptables rules suddenly not working

I'm trying to set up a webserver using an Odroid U3; as OS I have Debian 7.4. The issue came when trying to load the iptables rules with iptables-persistent. I'm using the same file with rules I've ...
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1answer
21 views

Can you explain why I am losing internet connection?

Here is the problem. I live in an apartment together with two of my roommates. Each of us lives in a separate room (see diagram: Mine is Blue, Room1 and Room2 are where my roommates live). There is a ...
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6 views

Unwanted routes appear after reboot

I installed Debian Jessie on my laptop. I used the ethernet port. I installed the drivers for wifi, and verified that the wifi worked. I disconnected the ethernet and rebooted the laptop. I indeed had ...
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2answers
25 views

Random HTTP connection problems

I'm having a strange internet access problem that I don't know how to debug. A specific set of sites will fail to load with "Connection Reset" status about 90% of the time. Accessing them by their IP ...
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0answers
15 views

Iptables stops the network after a while

I have 3 dedicated servers (same hardware Supermicro X8STi and same bios) with CeontOS 7 Linux 64Bit and I'm having a problem with one of them, with iptables to be precise. When I change the policy ...
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0answers
8 views

Random connection timeout

Since some months ago, I notice connection timeouts on my PC (about once a day). Browsers say there is no connection for one minute, then everything get back to normal without doing anything. Note ...
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7 views

Wired Internet abruptly stopped working Ubuntu 14.04LTS

My Ethernet just stopped working after I might have probably messed up with some of the settings. I have a dual boot windows 8 and Ubuntu. Internet works fine on windows 8, and used for for ubuntu ...
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1answer
6 views

What keeps ports 32003 and 25419 open on my Ubuntu 14?

I did a netstat on udp ports and found a service on port 32003 and one at 25419. What are they , how can I kill them at startup if they have no use? http://i.imgur.com/fo7atla.png
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6 views

Why does lldpctl show no neighbors on standalone Ubuntu system?

I have installed sudo apt-get install lldp in two different ubuntu system and in both system I have set (/etc/default/lldp) DAEMON_ARGS="-x -c -s -e -l" I have check in wireshark also transmitted ...
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9 views

QOS on a Cisco DPC3939?

So with the Xfinity triple play package they issue a Cisco DPC3939 router. Now, I don't know if any of you have any experience with it or not, but suffice to say that it sucks in terms of both ...
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1answer
9 views

How do I use ssh ProxyCommand to connect to remote MySQL server behind bastion host?

Three machines are involved here. Localhost where I do my development. AKA laptop. Bastion host where you must connect first. AKA jump. MySQL server where I want to connect to. AKA DB. My ssh ...
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1answer
20 views

Context(right-click) menu Long loading times when Network connected

The right-click context menu takes 10+ seconds to open on any file/folder. The delay does not change between repetitively right-clicking on the same file/folder. I also sometimes get explorer crashes. ...
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1answer
26 views

Why don't verification images/CAPTCHAs load behind a proxy? [on hold]

I've tried dozens of proxies, all from different servers, countries, setups, etc. I've tried web proxies as well. For some reason, it's not possible to read verification images behind these proxies ...
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5 views

LAN over RF link leads to intermittent errors

We have an odd error occurring with our network, the setup is: IP Camera -> Radio LAN repeater -> Local switch -> PC The IP camera is streaming video over RTSP / UDP and we can control it ...
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0answers
10 views

netbalancer unknown error after a period of time

I had netbalancer and it worked for me as it should. a couple times ago I noticed that it is not working the same as before and the limits have no effect on connections so I decided to uninstall and ...
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1answer
12 views

Openvpn client routing not always working

I use a server with openvpn and pptp daemons. In iptables I have rules to give some pptp clients permission to have contact with other clients through pptp or openvpn tunnels, available on the ...
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1answer
33 views

Is there such thing as an Ethernet output selector? [on hold]

I have two independent Internet connections at my home, and I also have a very detailed LAN setup in my home, spanning many floors, and network devices. The problem is sometimes one of the two ...
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1answer
8 views

Brother network printer config for Synology DiskStation AirPrint server

Synology DiskStation's DSM 5+ NAS OS includes Apple AirPrint and Google CloudPrint server services. However, it doesn't include drivers for my specific printer, a Brother DCP-7065DN. Do I need to ...
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21 views

Update shared application over a network

I need to upgrade an application on a Linux Samba sharing without asking all users over network to close the process. Example upgrading App.exe from version 1 to version 2: rename the actual ...
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18 views

How to set up tinyproxy if have a dynamic ip adress? [on hold]

i install tinyproxy in ubuntu but i have a problem with my dynamic ipadress so its changing when i restart to modem. how to setting up tinyproxy for connect? how to allow all ip to connect proxy i ...
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1answer
8 views

How can I connect to MongoDB on my Mac OSX from a process on a Vagrant/Virtualbox machine?

I can't use localhost because from my virtual machine's perspective localhost is the virtual machine itself and not the underlying host that it is running on. How can I connect to the host machine ...
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26 views

Can launch only few applications with my Desktop Pc

In last night before went to zzz was going to check emails and some game news with my Desktop Pc from Pc Gamer website,but browser didn't get connection to net even Steam was Online and Laptop next to ...
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5 views

VMware vmnet2 routes collide with en0

I am getting the following error when starting a vagrant box: gajus:vagrant gajus$ vagrant up Bringing machine 'default' up with 'vmware_fusion' provider... ==> default: Checking if box ...
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1answer
11 views

netstat reports an “amnesia:2554” connection: what the hell is “vcnet-link-v10”?

My netstat reports this line: TCP 192.168.1.161:59065 amnesia:2554 TIME_WAIT 192.168.1.161 it's me, but we have no "amnesia" host on the network. Looking for info about port 2554 I ...
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1answer
28 views

Extend WiFi range with a wired AP

My brother has a router with wireless connections in his cellar/ground floor. His range is bad on the top floor. He already has physical CAT cables running through his house so he could easily ...
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0answers
13 views

Limit visibility of network shares on Server 2012 r2 to specific IP ranges

I have a somewhat large home network with multiple video streaming boxes, phones, tablets, game consoles, PCs, laptops, and various other devices. I also just finished the process of archiving ...
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9 views

Windows 8: Ping Result : General Failure after disconnect from vpn

In Windows 8 When i connecte to the vpn and then disconnect from it, i get general failure. PING: transmit failed. General failure. the routing table are: Network Destination Netmask ...
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0answers
21 views

Very slow file transfer speeds from wired to wireless

I'm trying to transfer files between my Windows 8.1 desktop, which is connected to my network via Gigabit Ethernet, and my Windows 8.1 Surface Pro, which is connected via 802.11n wireless. Although ...
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0answers
6 views

How to configure fully isolated network connections for VMWare host and guest

I run a Windows 7 host which has VMWare Workstation installed. Is it possible to configure the Host and Guest computers to independently connect to entirely separate networks? (say the host supported ...
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2answers
51 views

How do I make my website accessible to the internet without a static ip and from a virtual machine?

I have Windows 8 host and I have installed Ubuntu 14.10 server as a virtual machine in vmware. I have installed LAMP server and I am trying to host a website from it. I have created a virtual host. my ...
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23 views

host unreachable when pinging between two laptops connected with ethernet cable

I have two laptops both with centos7.Say host laptop and test laptop.On host laptop I have installed KVM and deployed two Vms on it.Ethernet cable is connected to host and test laptops.I am able to ...
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0answers
22 views

Windows Server 2012 R2 configure as wifi access point / router

I have a windows server at home which handles all DNS and DHCP for my network. Recently my upstairs router exploded and I need to find a new way of providing Wifi for my home. The server has a new ...
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2answers
30 views

Linux remote control over internet

I have a ARMv7 mini PC in city A, and a laptop in city B. Both of them are behind router and firewalls, ARMv7 is running Ubuntu 14.04, only user is root, Laptopis running ARch. I want to access the ...
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52 views

way to trace IP address change in Windows

Ours is a small network consisting of 15 users. We have lan messenger installed in every machine. Someone is misusing it by using annonymous IP address in their system. We traced the anonymous IP as ...