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

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How does virtualbox get the network configurations?

I am installing CentOS 7 on virtualbox. On "Network & Host Name" screen: When toggle the "OFF" to "ON", I can see the IP, DNS, netmask are all configured: I am curious about how does ...
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11 views

Chrome & IE can't access local website, while Firefox can. How to debug?

1. Enviroment 1.1 Host machine Windows 8.1 Enterprise Chrome v42.0.2311.152 Firefox v38.0.1 IE v11.0.9600.17031 VirtialBox Vagrant 80 port forwarded to port 80 at guest machine at 192.168.56.101 ...
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1answer
76 views

How does the internet work in space?

I've been learning about how the infrastructure of the Internet really works through this answer to the question, Who provides the Internet service to Internet Service Providers (ISPs)?. I know that ...
2
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0answers
15 views

DNS not functioning on command line

I recently did a combination of Vagrant + VirtualBox stuff on my machine to try to get a virtualized Ubuntu install working. However, I had no luck with it so I just uninstalled everything. Ever since ...
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0answers
20 views

How additional IPs are added to hosting

Hi i have centos server with 1 ip address. I bought 2 more ip address from same server company, and i added them in ifcfg-eth0:0 and ifcfg-eth0:1 in my server. When i ping within my server using SSH, ...
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0answers
4 views

Cisco VPN, Site 2 Site Via VPNC Gateway

i may be barking up the wrong tree here, been racking my brains over this. I've been asked to setup a Cloud network which will house a number of services. They asked me to use our excisitng Cisco ...
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0answers
15 views

Win 7 defines share network path incorrectly. Therefore it can not be discovered on the network

I have 3 Win 7 machines networked, but not using Homegroups. The problem I have is with one of them (my laptop)and how it defines the Network Path for sharing the Public directory under Users. The ...
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2answers
32 views

Passing through a firewall with a “reverse” proxy

I have to do a workshop in a firewalled environment which is preventing me to show everything I would like and I'm looking for a workaround. I'll be demoing a software which runs on Windows. During ...
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1answer
13 views

Error when trying to copy over the network using robocopy

C:\Users\Alex.Newton>robocopy /"\centlpf01cz6c\c$\Program Files\ProgramName\/" /" \centlpf01cz6c\Program Files\TestBatch\Test\/" ...
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0answers
18 views

Possible to share VPN connection?

I am part of a small company. We are currently doing presentations which require access to our VPN. Unfortunately, a number of our laptops got stolen. We now have one laptop which has access to VPN, ...
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1answer
9 views

Redirecting marked packets to Tun device

I have a small program that needs to do various things with a selection of packets, based on various iptable rules. The packets are MARKed this way: iptables -t mangle -d 10.10.0.0/16 -j MARK ...
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1answer
16 views

Destination host unreachable

An user reports issues with wwan0 interface. 4: wwan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 02:fa:a8:34:86:69 brd ff:ff:ff:ff:ff:ff ...
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0answers
10 views

Cannot add, remove nor access mapped share “Element not found” in Windows 8.1

A standard user on my Windows 8.1-64 cannot remove a mapped drive. Tried command line and explorer. Tried run as admin. "Element not found" everywhere. C:\Windows\system32>net use x: /delete The ...
12
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7answers
762 views

Is it possible to merge my ISP and cellphone Internet access? I want to split download and upload

I would like to use my ISP for download only, and my cellphones 4G connection for upload only. This is because my ISP's upload speed is poor, but download is OK, and my 4G upload is great and free (I ...
0
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1answer
8 views

is it possible that we can share files and folders from workgroup system to domain system

I'm a student I have created a server on vmware (windows server 2003) and installed active directory, DNS, Dhcp. and in virtual box two client xp systems and added both client system in domain. now i ...
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1answer
22 views

ssh connection error “Permission denied (publickey)”

So I have been trying to build ssh connections between google cluster container containing 1 master node and 2 worker nodes. I have used ssh-keygen to generate key pairs for all three nodes, send the ...
2
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1answer
25 views

Sharing Internet connection from a Linux VM to Windows

I'm looking for a way to share Internet connection from a Linux operation system like Ubuntu or Kali to Windows 8.1. what i'm trying to achieve is to use one of these open-source based WAN ...
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1answer
35 views

Decide to allow or block internet access to applications

I'm looking for a simple tool that everytime an application of any kind tries to access internet asks something like "Application.exe is trying to access internet" and lets me choose wheter to allow ...
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0answers
18 views

Problematic RTL8188EE Wireless Network Adapter

Good Day All, There are numerous results when searching google on this issue, however, none seem to have a solution. I am hoping to resolve this issue -- or at least have a decent workaround. It is a ...
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0answers
8 views

ESXi 5.5 - Management network with no gateway

I'm setting up a test lab for VMware in Hyper-V. I have 3 vSwitches in Hyper-V: -EXT01 -INT01 -INT02 I've also created a W2K12 VM in Hyper-V which has the following roles installed: -AD/DNS -DHCP ...
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1answer
10 views

systemd-networkd does not receive dhcp requests

host, container: fc21 $ systemctl start systemd-networkd.service $ systemd-nspawn -b -D `pwd` -M m1 --private-network --network-veth ... In container: $ systemctl start systemd-networkd.service $ ...
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0answers
15 views

UDP over Internet

I have a small problem: I want to program a simple Apllication that sends a small word (in this case: "Hello") to a server. This Server should display it via cout. This is just a project to learn how ...
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1answer
18 views

Make my NAS send me a notification when it receives a new public IP

In order to keep my most valuable files safe(r) I have a remote NAS setup. Every night I use rsync to send my changed files from my local server to the NAS and this is working somewhat okay. My ...
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0answers
18 views

AMD FM2 - Windows 7 - Slow downloads in IPv4, Fast IPv6 and uploads

I am having problems with one computer on my network. Same result wired or wireless, IPv4 Downloads are super slow. Uploads and IPv6 downloads are fine. Running windows 7 Pro - 64bit. Loaded the ...
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0answers
16 views

point multiple ip address to hosting

I have centos server, earlier it had 1 ip [ a.b.c.d ] (external ip , eg., 141.101.114.59). Now, I bought 2 additional ip [b.c.d.e , f.g.h.i] (external ip , e.g, 190.93.244.58 , 130.93.245.8 ). I have ...
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1answer
10 views

Squid proxy bandwidth hogging prevention

I have a squid proxy acting as a parental filter on our LAN, however it's very easy for one users downloading to slow everyone else down. My question is: Is it possible to set up something that ...
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1answer
13 views

How to white list some ip and all the rest block while having already a DMZ?

I have a Linux machine running which has local ip: 192.168.1.2 connected to a router with public IP 8.8.8.8, now the router 8.8.8.8 has DMZ to 192.168.1.2 As a result spammers, hackers, crackers ...
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1answer
13 views

VPN protocol suitable for connections with poor reliability

I need to set up a VPN that allows users to connect while in the field, often via connections that involve high latency and loads of packetloss (usually via 3G, CDMA, or whatever is available). Up ...
0
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2answers
32 views

Easiest way to get wifi if signal is too weak

I want to get wi-fi internet access on a smartphone in a certain place. I have a switch there, it is connected by a 20 meters long network cable to a wi-fi router, the router is connected to the ...
0
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0answers
35 views

Windows 8.1 desktop connected to network but cannot access Internet or NAS

I have a self-built desktop that is running windows 8.1 and was working flawlessly for the past two years, however recently it has developed a problem where it is not able to access the internet or ...
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0answers
41 views

Why are my NAS drive transfers so slow?

I've a rMBP with 802.11ac, connected to an Asus RT-AC66U on 5GHz and a WD My Cloud EX2. If I transfer large files via the router from the Macbook to the NAS drive I see a mere ~10MB/s (80Mbps say). ...
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0answers
14 views

Remote WOL over CISCO/FW not Forwarding

I'm trying to accomplish a Wake-on-LAN by triggering the two servers' public IPs. Internally, the WOL works like a charm (by either the internal or external IP), externally however, it does not wake ...
0
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1answer
16 views

Windows Server - Bridge ip address of different subnets

My Windows Server 2008 R2 has two network cards which are connected to physically separated networks. The Adapters have the following IP settings: LAN1 IP: 192.168.2.1 (Netmask 255.255.255.0) LAN2 ...
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1answer
27 views

ipconfig/renew not changing the ip

I try to change my IP address assigned by DHCP using renew command, but it shows only the previous IP address rather than new one. Here is the command : C:\Documents and ...
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0answers
16 views

Can I do internet banking by using VPN? [on hold]

I know that VPN will mask my IP Address, So is it safe to perform Internet Banking while using VPN?
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2answers
30 views

Why does an Internet connection need an IP address, even though it is not being used to host a website? [on hold]

My Internet connection has an IP Address but I'm not hosting a web server on it. Why is this?
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0answers
21 views

Router-settings for a Media Receiver 301 television?

A few years ago, when I wasn’t yet interested in technology and computers, a man from our cable-company set up our router which is a Speedport W 722V. As I’m today interested in computers, I wanted ...
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0answers
16 views

Connect 1 computer with to 2 networks, route through 1 VPN

Suppose the following scenario: http://i.stack.imgur.com/PRKvX.png I have a question, I am sure it has been asked but I do not know how to word it or what to look up. My Problem: I am a high school ...
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0answers
7 views

Cannot run docker without connection

Whenever I try to run docker without internet connection, I got strange messages like this docker ps 2015/05/22 23:31:45 Get http:///var/run/docker.sock/v1.12/containers/json: dial unix ...
0
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1answer
19 views

Samba ports still closed even with iptables rules flushed and disabled

I’m trying to install Samba on a server running CentOS 6 with WHM/cPanel, and I’m having some trouble with ports. This is a brand new system as of yesterday, and I haven’t yet started locking down ...
0
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1answer
17 views

Network printing in FreeDOS (VirtualBox) to a Shared Windows Printer?

I have a scenario with a printer on a Windows 8 machine that needs to be shared to a FreeDOS instance that is running on same said machine via VirtualBox. Initially I'd hoped that there was a printer ...
0
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1answer
18 views

Cannot access a specific set of domains and web pages, but can access all others

I am unable to access a specific set of domains, but can access other web pages and domains without a problem. The domains I cannot access are all hosted at the same IP, namely ...
0
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1answer
17 views

How do I only allow a specific port (RDP) to connect over a WatchGuard VPN client?

My office uses the WatchGuard VPN client to access the corporate network. I have a lot of services (e.g., Plex, VLC, Skype, etc) that I don't want to go over the VPN. The only thing I want going over ...
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0answers
3 views

PPP connection from Windows 8 to Linux

I have a linux server that allows PPP connections over a serial cable using PAP authentication. I'm trying to connect from a Windows 8.1 laptop, to no avail. The linux syslog output is quoted below. ...
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0answers
16 views

Why do my nat iptables rules not work with marked packets?

System: debian squeeze, Linux server 2.6.32-5-amd64 #1 SMP Tue May 13 16:34:35 UTC 2014 x86_64 GNU/Linux, iptables v1.4.8 lsmod | grep iptable iptable_security 2176 0 iptable_mangle ...
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1answer
13 views

How to get details- like Remote ip- about alert genrated by suricata after scanning pcap file

I wanted to test security of my android phone so I leaved it for one day running tcpdump in the background. Then I send resulting pcap to virustotal.com. They are scanning pcap file using snort and ...
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1answer
42 views

what does a blue RJ jack insert mean?

Good day, I have searched for the meaning of casing colors for RJ jack inserts, but haven't found one. Please indicate: what does a blue RJ jack insert mean?
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1answer
34 views

Ping / SSH computer via SMB name

At work, I can ping and SSH computers by either their IP or their SMB name. If I try that at home (no, I am not trying to access the office internal network from home), then ping / SSH by IP address ...
0
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1answer
33 views

192.168.x.x with Subnet 255.255.0.0, would like to link with 192.168.2.x with subnet 255.255.255.0 [on hold]

Is it possible to connect these two networks together, without changing the subnet? For example by putting a router in between. Network A IP :192.168.x.X Sub :255.255.0.0 Network B IP : ...
1
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1answer
192 views

Can you bypass a proxy server with a LiveCD/USB or Virtual Machine?

It is possible? Let's say I have a Linux live CD or USB and I manage to boot from it.