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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1answer
79 views

Cannot connect to certain sites after moving computer

I recently moved my computer to a new location in town. We have the same ISP, Eastlink, but new cable modem, and new switch. I am connecting via Ethernet, but the effect is the same on Wi-Fi. I have ...
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0answers
89 views

Network connection degrades after a while

My topology is as follows: Fiber -> Modem --[PPPoE]--> WiFi Router --[Cable]--> Win Computer A | `-------[Cable]--> Mac ...
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0answers
344 views

Unable to connect server through winSCP and its giving access denied error

Even though by providing correct username and password it's not allowing to connect to server. I turned off firewalls also in server. But, still not able to access FTP connection. I also checked that, ...
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1answer
39 views

a network gateway that modifies content - how to do it?

I'd like to set up a network gateway that will modify on the fly the code of webpages accessed by users on my LAN. For instance, I'd like to automatically remove ads, suspicious object or iframe tags. ...
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3answers
62 views

How do clients identify the router on a network?

How do clients connected to a LAN network with a NAT router connecting the network to the internet, identify the NAT router and hence know where to send their traffic for the wider internet. If this ...
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1answer
73 views

port forward in INPUT level

I want to change the destination port of the ipv6 packet in the INPUT level. So I tried to use ip6tables with nat in the INPUT level but seems this command does not work # ip6tables -t nat -I INPUT ...
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0answers
224 views

Use Ubuntu Iptable to route public ip to pc in private network

I am currently set up a Ubuntu server as a Router which has two network interface. eth0 -> Connecting to public internet ( 10.10.1.78 ) eth0:1 -> 10.10.1.79 eth0:2 -> 10.10.1.83 eth0:3 -> 10.10.1.81 ...
3
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1answer
2k views

How to disable routing all traffic (including web-traffic) through the VPN in client's .ovpn config file?

In order to connect to corporate network I've got these four files ca.crt client.ovpn client.key client.crt I couldn't create VPN connection via Ubuntu GUI, but I managed to get it work from ...
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3answers
184 views

Where can I find the definition of “eth0” in my Ubuntu 14.04 OS?

I cannot find the definition of eth0 in either /etc/network/interfaces or /etc/NetworkManager/NetworkManager.conf, but eth0 works perfectly. So who can tell me in which configuration file I can find ...
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1answer
68 views

Private host with static ip on VMware

I have an Ubuntu virtual machine that I run on my Windows 7 laptop with VMware player 7.1.0. Here is the setup: Virtual Machine Settings > Network connection : Bridged. Settings of the Ubuntu ...
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0answers
133 views

Can't forward ssh port properly on fritzbox 6490

I tried to forward port 8022 to port 22 on my raspberry pi in my fritzbox 6490. Therefore I added the port forwarding rule for udp as well as for tcp. My problem is, I keep getting a timeout error ...
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0answers
190 views

Forward NTP from one network to another network connected to the Internet on Windows 7

I have NVR server which is running Windows 7 with 2 network interfaces. There is one network dedicated for IP Cameras - 192.168.254/24. Second NIC connected to my network with internet access 192.168....
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3answers
84 views

Static IP without a static IP

I need my network to have an external facing IP address that is static. My ISP will not provide me with one. I know I can use use DDNS to achieve this in a way. I want to setup an Exchange server ...
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2answers
129 views

See real IP through HTTP Proxy

I'm setting a HTTP Proxy in a Java Application. In that application I test wether the proxy is working by querying http://api.ipify.org/. However, I get my real IP address back instead of the one of ...
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0answers
22 views

LAN disconnects, brought new LAN card but old one comes back [duplicate]

So here is the story, the old LAN port came with the motherboard and after installing windows 8.1 (from windows 7) the LAN would drop in about 30 mins of a restart and never connect again. I thought ...
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0answers
131 views

vnstat: Statistics of two connected OpenVPN-interfaces differ

I have two servers connected over an OpenVPN tunnel. The tunnel is a 1-to-1 tunnel with fixed IPs, so there should be no one else talking over the same tunnel interfaces than these servers. Some days ...
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0answers
256 views

What factors limit the number of sessions a router can handle?

We have had a number of problems recently with our office connection. Unfortunately FTTC is not available in the area, so we have two ADSL connections load balanced via a Draytek 2860Vn+. I have had ...
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0answers
85 views

My PC loses Internet connection from time to time for 30 seconds

When I play games, from time to time I lose Internet connection for about 30 seconds, I check with my browser and it doesn't load pages also. I thought this might be because I'm using a dumb setup at ...
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1answer
30 views

what the “!” means in the iptable rule

what the "!" means in the following iptable rule iptables -I inacc ! -i br0 -p UDP --dport 69 -j ACCEPT I think is related to the interface br0. I think it mean any interface except the br0 Am I ...
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1answer
437 views

How to use 2.4 GHz and 5 GHz at the same time

I have the following setup: 1x TP-Link Archer C7 (with to Accesspoints "AC24" on 2.4 GHz and "AC5" on 5 GHz) 1x Notebook with 2 Wifi-Adapters (TP-Link Stick connected to "AC5" and Intel N 7260 ...
2
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1answer
3k views

What is creating the utun0 network interface on OSX? What is for? What is it exactly?

What is creating the utun0 network interface on OSX? What is it being used for? What is it exactly? The interface only appears after connecting to the Ethernet or turning on the Wi-Fi and goes away ...
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0answers
222 views

How to connect to a wireless network with different domain credentials

I've recently purchased a new computer, and I'm using it for work. The only issue is the username/password combo I'm logged in with is different to my domain credentials in the office. Now I've ...
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2answers
1k views

renaming network interface with systemd

I want to rename on Fedora 22 a network interface managed by systemd-networkd (version 219) from the system-assigned name enp2s0 into wan. For that I created the following file /etc/systemd/network/80-...
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2answers
89 views

How to connect two computers wirelessly

I want to connect my Raspberry on which I installed archlinux arm, wirelessly to my computer. With this connection I want to stream a live video from the Raspberry Pi. Raspberry<------Wireless ...
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1answer
14 views

Port restrictions and MACs

I have a question regarding connections within a university setting. In my room I have two network points. One for my pc and one for my voip phone. Each network port is restricted to one mac address, ...
3
votes
1answer
392 views

Why did the naming convention of network interfaces change in linux?

I recall not too long ago, interfaces were identified by eth0, eth1, wlan0, etc. Now I'm finding interface names like enp0s3, enp0s8, etc. In another question I asked here only moments ago, someone ...
2
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2answers
485 views

In Virtual Box, how do you know which NIC is which from the linux command line?

I've run into a problem a few times now where I'm installing linux in a virtual machine, and all of my interfaces look like "enp0s3" or "enp0s8" ect. In one test, I was running a VM with 4 virtual ...
0
votes
1answer
33 views

Network shuts down when downloading large file through 5 GHz network

My router runs 2 networks. A 5 GHz network for newer devices, and a 2.4 GHz network for older devices. When I am downloading a large file and/or have a lot going on, if I am connected to the 5 GHz ...
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2answers
620 views

OS-X localhost resolving strangely

The issue I'm about to describe I see only when I run some Java unit tests. However, I'm pretty sure that the cause is OS-X configuration, not Java, so I'm posting to superuser not StackOverflow. We ...
1
vote
1answer
288 views

Windows Server 2012 Standard - Can ping google.com, but cannot access on Firefox

I have a Win Server 2012 Standard that I'm replacing a Win Server 2003 R2 Standard. After migrating Active Directory and DNS over to the 2012 server and making it the Global Catalog DC. I can ping ...
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2answers
78 views

How to share a drive with a network in Windows 7

How can I share a drive with my network, so that I can access the drive form my mobile (any device) which is connected to the same network (same wireless modem). I did try it once and when I tried ...
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4answers
362 views

Point of subnets

This page gives two options for if you have more than 254 hosts, get another IP range or use subnets. But if you've got an IP address range which lets you have more than 254 hosts, why not just keep ...
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2answers
160 views

Router behind router

To extend my wireless upstairs I salvaged a second router and have been trying to set it up so that: SSID matches with primary router Password matches with primary router Secondary router: Dlink ...
2
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0answers
134 views

netstat -o timer value “probe”

A bit of background on the scenario. I have a distributed application running on RH6.5 that uses JMS (OpenMQ 4.5.2) to send messages between hosts. One host (Host A) receives information from network ...
0
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1answer
245 views

Share VPN via Windows Internet Connection Sharing?

I've got a chicken & egg problem. I'm a remote worker and I just received a new machine. I still have my previous machine, which is connected to my corporate network via VPN. On my new machine, I ...
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0answers
23 views

Wireless network management

My (wireless) network implementation, goes like this : 5 ADSL lines (Up to 24 Mbps) but they work aprox. @ 4-5 Mbps. I want to support 60 clients on the same time. The routers we have available : ...
1
vote
1answer
997 views

How to debug missing DLNA connection

I am not sure this is the best place to ask this question, but I am stuck and hope to get some hints from the knowledgeable community. I am having hard time making my DLNA home audio system work. ...
1
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1answer
52 views

Why can't my Windows devices browse but my iOS devices can browse?

All Windows devices on our wireless home network are no longer able to browse the internet. The choice of browser does not matter. All iOS devices can still browse without problems. I have tried the ...
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1answer
104 views

Getting list of connected devices and types to a network without connecting

I'm using kismet to get a list of networks nearby and all the devices that are connected to them. I can get the MAC address off these devices, but I was wondering if it was also possible to get the ...
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2answers
148 views

A very Strange DNS 1 & DNS 2 Entry

I have an issue I've never seen before, 5 computers on network. All have access to the server via remote desktop. Only one has Internet access. Tried setting ips static on the ones not connecting to ...
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2answers
49 views

When is an IP replaced in routing?

If I have 2 networks, 192.168.1.0/24 and 192.168.2.0/24, and my IP is 192.168.1.2 with the following routes: Destination Gateway Genmask Flags Metric Ref Use Iface default ...
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1answer
298 views

Poor streaming performance on link with good bandwidth

For the longest time I've had an elusive problem with my network. I've changed router, access point and made wireless connections wired in search for a performance thief without getting any closer to ...
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0answers
309 views

Docker Container “Destination Port Unreachable” under ask4.com service

Currenlty I'm trying to set up network in my Docker Container, however what I get is - "Destination Port Unreachable". The thing is that I'm running this ask4.com provided connection (student ...
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0answers
281 views

Can not ping the Router in GNS3 via vmnet1

I have installed GNS3 on CentOS6.2. And on GNS3, f0/0 of c3725 connects to CentOS6.2 via vmnet1. I mannually assign 2001:cafe::1/64 to f0/0 of c3725 while I assign 2001:cafe::2/64 to vmnet1. Here ...
3
votes
1answer
52 views

Is it possible to stop Hyper-V renaming the WiFi connection to “Ethernet”?

Hyper-V needs to do something with the network drivers to allow for a host OS to access the external network. This interferes with the actual network device and renames it to "Ethernet". This is less ...
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2answers
222 views

unknown open ports/services 54409 and 16808

I have a Linksys EA6400 router. Today, I have noticed in the log file some activity from multiple ip addresses on 2 ports that are open: 54409 and 16808 and I do not know what is going on there. I ...
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1answer
2k views

vmware workstation Cannot change network to bridged

i'm using vmware workstation 8. I can not bridge my network adapter. I reinstalled a virtual machine and chose Bridged. When i view Virtual network editor, there is no bridged vmnet. I have NAT ...
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2answers
944 views

How to restore my default DNS?

I hanged my DNS servers to 8.8.8.8 in order to fix my web browsing (it worked). My coworkers want me to change it back, but i didn't save it! Is there any way to restore my old dns settings? I'm ...
0
votes
1answer
396 views

Share a folder over the internet, UNC-style

Is it possible to set up a server which will basically make a folder in my computer available via a UNC path, like: \\my_ip\Share ...Over the internet? And if so, do the people accessing said path ...
0
votes
1answer
174 views

VMWare access client through hostname

I am using VMware Player 7.1 on a Windows 7 machine that connects to my router via WiFi and DHCP. I have set up Ubuntu using VMWare Player. I have kept the Network adapter as Bridge. I am able to ...