Questions tagged [networking]
For questions on connecting devices together so that they can communicate with each other, as well as questions on networking equipment such as routers and switches.
14,649
questions with no upvoted or accepted answers
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Windows7 & Samba (Ubuntu 14.04 LTS) - error on change password
I have a fully working setup of Samba4 (non-AD) on Ubuntu 14.04.01 with Win7 clients. When a user tries to change his (samba) password from the Win7 client, an error 1351 occurs. No error messages in ...
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How to IPv4 through IPv6?
My ISP (Unitymedia Germany) tunnels IPv4 traffic through slow and unstable CGNAT (they call it "AFTR", which seems to be a similar thing) but comes with reliable and native IPv6.
Now, is there any ...
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Assessing Performance in Process Explorer: Varying Block Sizes
I am trying to assess the performance of my scientific software using Process Explorer, with the files both locally on our blade server (Dell VRTx, Windows Server 2012) and over the network from ...
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Route all packets on port 80 from inside a vm to kali linux on another vm
I'm trying to route all packets on port 80 to kali linux so that I can ssl strip them but I cannot see to setup the iptables correctly to force all the packets to go to my other Vm.
[ Virtual Machine ...
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Using two lan cards, VPN
I am using a VPN software (Private Internet Access), which is installed in my PC and it works fine. But i need to use the converted internet connection on a device like xbox. it was configured a while ...
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What do I need to do to make IPv6 devices globally accessible using Uverse 6rd?
Summary: With UVerse's 6rd implementation, do I need to buy/install/configure a compatible wireless router in the DMZ to properly handle the IPv6 traffic in both directions (incoming connections too)? ...
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how to use HTTP over all computer? on windows and ubuntu
I'm using a HTTP proxy on firefox, something like proxy.mit.it:8080.
I can use firefox to access network.
Now I hope other applications on my laptop can also use the proxy to access internet.
I ...
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Port remains blocked after opening
I have a TP-Link WR841ND Router. To test a server, I've had to open port 69.
When the router is connected to my internet at home, and I do the router's routine of opening a port (I know how, have ...
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CentOS 7 can't get IPv4 address from DHCP server
I have classroom full of computer running CentOS 7 and only one computer can't get IPv4 address from DHCP server during boot, because NIC is not yet up, when dhcp client tries to get IPv4 address from ...
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Batch file for configuring the ip address and removing it
My pc has a network configuration
IP- 192.168.0.99
192.168.4.20
Mask- 255.255.255.0
255.255.255.0
Gateway- 192.168.0.1
192.168.4.1
I am connecting to the internet through the ...
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netperf udp with small packets on 10g link is bounded by ksoftirqd
I want to fill a 10Gbps link with very small udp packets (64B).
I use the following command
for i in 1 2 3 4 5 6 7 8; do netperf -H 192.168.56.2 -p 12865 -t UDP_STREAM -l 60 -C -c -- -m 64 -s 16M -...
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Adding a static route for gmail?
I have my PC (windows7) on two networks - WiFi Hotspot and LAN at the same time.
I would like to add a route on my PC such that requests to gmail go to the Wifi Hotspot and everything else to LAN ...
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737
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Extremely slow connection on LAN for Readynas NV+ v2 NAS
I am experiencing extremely slow upload rates on a Readynas NV+v2 NAS.
Speed measurement
When testing using speedtest-cli I get the following result:
Testing download speed.............................
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1
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1
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245
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Tracking down the cause of loss of network connectivity
I have been having issues with short (seconds, but long enough to break a TCP connection) periods of loss of internet connectivity. I have tracked this down to what appears to be an actual loss of ...
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Dynamic Routes at Home Router
I am currently using a linux box as my home router (PPPoE to my ISP and NAT, etc).
Some websites are blocked in my country (don't say the name out loud), so I have another PPP in my router to a VPN ...
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Setup Switch HP 1810-8G - Internet connection with several VLANs
I'm newby to this, indulge me.
We bought a new HP switch with VLAN. The goal is to have two separate VLANs.
The first port is for the router/internet connection.
I've two groups ( A, B ) using the ...
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How can I limit connections from any IPs but localhost using xinetd?
There is a xinetd service. Users connect to it from their workstations. How can I limit them to use only one connection per IP, but keep unlimited connections from localhost?
I know there is ...
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662
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How can I debug IOZONE over the network?
I'm working on a mac and I have a vm running ubuntu server.
I created a file vm_client.iozone that looks like:
vm /path/to/test /usr/bin/iozone
I have configured iozone to work over ssh using ...
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116
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DNSSEC- Client software
I'm interested in running DNSSEC, not sure how this works. Does DNSSEC need to be supported both on the client and server. I currently have DNSSEC on my domain hosting site and the VPS server but if ...
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Create bridge (eth0-wlan0) using my laptop
Okay. I might be asking this again but none of the answers solved my problem.
I have a PC A which has eth0 (192.168.1.28/24) connected to another machine B's eth1 (192.168.1.11/24). A has another ...
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Win 8: Folder copies to network drive, but the files in it don't copy
I can transfer files between my network drive and my Win 8 computer, but if I drag a folder from my computer to the drive, the folder is empty on the Network drive. My XP computer can do this ...
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How to connect 2 home routers to connect 2 separate networks?
I don't know if it's a silly question, but I'm not very good at networking. So please help me out.
I have a Netgear WNDR4500, and I configured my PCs and virtual machines setting the WNDR4500 (192....
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Accessing Servers without Port Forwarding
So I'm stuck in a conundrum. I can't buy a server, and I'm stuck with this ISP who refuses to give me a new router. They have given me a ZTE Router (ISP is Cincinnati Bell FiOptics (great speeds ...
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618
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Can network sniffing in promisc mode on a network bridge produce "false" TCP retransmissions?
I have a Wireshark log from a computer that was running Ubuntu and tshark. The computer has two NICs and I've connected them to a bridge (using /etc/network/interfaces) and gave that bridge a static ...
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141
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pppd retry issue with multiple wan interfaces
I am using two wan connections in my router with linux kernel 2.6.21. PPPOE Ethernet cable and 3G connection. Both need ppp setup. But boot sequence is different for both. many times 3G disconnect and ...
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968
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Two networks with same SSID, different credentials
(Laptop running W7.)
We have a wireless network all around the campus with SSID X, which requires credentials Y. The same wireless network exists in my faculty (at least the SSID is the same), where ...
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How to route traffic from NIC1 to NIC2 when both NIC's are in different subnets?
I am implementing anycast ip on multiple servers which have 2 NIC's installed
NIC 1 is connected to the production LAN with a subnet and a Default Gateway (automatic registration in DNS enabled for ...
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176
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How to setup AirPort Extreme 802.11n to connect to my wifi and share its ports?
Is there any way to force my AP Extreme to act as an wifi client and share it´s ethernet ports? This is no problem with my AP express, but I want to utilize the gigabit ports and switch capabilities ...
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How to ssh from Linux client to OS X host without error message “ssh_exchange_identification: Connection closed by remote host”?
My LAN comprises a desktop computer running Linux (Debian Wheezy), a MacBook with OS X Mavericks, and a modem-router; ssh with Linux host and OS X client functions well - no problems connecting from ...
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allow incoming ssh with openvpn client
I have set up an OpenVPN client on my home router. The moment the tunnel goes up, I can no longer ping my router from the internet using its WAN_IP. I would like to allow certain incoming connections (...
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Signal King Mac Drivers
I've now accumulated two Wi-Fi antennas for the purpose of going on a neighbor's shared secure network. The first (an Ideaworks outdoor antenna) works ok (middling would be a kind descriptor to apply) ...
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Hacking a Bluetooth headset
So I have a Samsung HM1300 (http://www.samsung.com/us/mobile/cell-phones-accessories/BHM1300NBACSTA).
I would like to hack this device, and transmit the button data from the call button for something ...
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Comcast Connection Suffers - No Explanation
I was hoping someone might have a clue as to what's causing my Internet problem, since Comcast is clueless, despite two visits from “technicians”. I am seeking some advice as to what I can tell ...
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ubuntu 14.04 traffic shaping
Traffic shaping using htb and tc does not give expected results for shaping.
Hi I am using the script from shaping
$TC class add dev $IF parent 1: classid 1:1 htb rate $DNLD
When I specify 0.5mbit ...
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Share local area connection with multiple TAPs
I'm setting up an VPN server. In this server I want to have 2 different encryptions (1024, 2048), each one in different ports. So I created 2 TAP adapters, and shared the local area connection with ...
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Bridge wireless networks
Ive got a BTHomehub3 down two floors, and I'd like to broadcast with a Netgear jwnr2010v5 upstairs by running a lan cable upstairs for the specific reason of gain access to a file hosted on a desktop ...
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Internet connection dropped when nat created and routed via vpn [linux+iptables]
I've got a very frustrating network issue. Currently I'm living in a hotel in which I need to authenticate through a website in order to obtain internet access. I've also got xbox360 that I want to ...
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How to use 2 Local Area Connections at the same time
I am trying to use 2 LAC (Local Area Connections) effectively, one is from my cable (router) and the other coming from my SmartPhone's internet.
I got to the point that I can use one of the LAC at the ...
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Can't ping over VPN from Virtual Machine in Azure
I've setup a VPN connection from Azure to my local network. I can ping an Azure machine from my local network, but cannot ping a local machine from my Azure network.
I've got the firewall on my ...
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Notebook with windows 7 can't connect to Wireless on certain hours
I've been experiencing this problem with Windows 7: when in certain hours of the night (usually between 21 and 00 pm), my notebook loses its connection and simply cannot connect to the wireless ...
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Windows Server 2012 R2 - Unstable network connection
I have a problem in my computer clients that are connected in my windows server 2012 R2. I have 30 client computers and sometimes other computers are not connected in my domain. For example 28 ...
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Photo Organizer that works from many computers to one file server
I have a file server in the closet. It runs Ubuntu, and exports my photo library as NFS4 and SMB.
I have children and a wife who all also want access to these photos.
Right now, the archive has the ...
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371
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Is is possible to exclude a range of IPs from being included in the DNS resolver cache?
Our network has a number of systems that are dynamically allocated IPs (which happen to be in the public range). These systems also have a local hostname, which is making it into the DNS resolver ...
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5k
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Synology NAS (DSM 5) cannot access the Internet through Tomato router?
I have just revived my Linksys E3200 router by upgrading it to Tomato 1.28 (Shibby). I have a Synology NAS running DSM 5 attached by cable to the router.
After the upgrade my NAS can no longer update ...
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Windows 8.1 how to disable certain programs when pc is connected to certain networks?
I use my laptop in different environments. Most of the time I'm connected with unlimited wifi or ethernet, often I'm connected through tethering cellular 3G. Since I run Dropbox Bittorrent Sync and ...
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Can access public shares for ANONYMOUS user from Android device but not from windows 8
At our office we have multiple PCs (Win 8.1) and after enabling windows publics share and disabling password protected sharing we've noticed that the feature was enabled on some PCs but on some other ...
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Block incoming traffic at home via static IP
I have a static IP to be whitelisted on a number of services I have to use from home.
However this means that my home router is now accessible by the web, ftp etc.
My routers firewall (ASUS DSL-G31) ...
lewis
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Swap [autofs] configuration files according network
I would like to setup a laptop on Linux to use two different autofs config according to the network it is plugged. I have the two working autofs files (see below) and I would like to swap ...
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Behavior of LAN ports on Asus RT-N56U in Access Point mode
I currently have an Asus RT-N56U WiFi router used to serve a combination of wired and wireless devices in my house. To take advantage of some recently installed ethernet lines,I need to move the ...
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Unable to detect Wifi signals
Recently my old wifi adapter broke, so I had to buy a new one. Eventually I got around to it but it doesn't seem to work. I have bought one from TP-LINK, returned it for the same issue as I'm having ...
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