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Questions tagged [local-area-network]

LAN, short for Local Area Network, is a network that connects multiple devices in a limited geographical area, such as a room, an apartment or a building. Currently, most LANs are based on Wi-Fi or Ethernet transmission.

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What to expect from a 10Gbs fiber optic network of one server connected directly to 4 clients?

I have a fiber optic network of one server connected directly to 4 clients(they are not connected to each other) The network is suppose to support up to 4x10Gbs, so 10Gbs throughput from each client ...
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OpenVPN and routing/iptables

I want to setup an OpenVPN with route on my Xubuntu server (router/gateway/share/dhcp/dns/wifi/switch... all in one). WAN - enp4s0f1 - 77.xxx.xxx.xxx LAN - br0 - 10.0.1.1 VPN - tun0 - 10.0.2.1 I ...
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Is it useful to keep virtualized and host traffic physically separated? [closed]

In our old HyperV setup, I see that there's a LACP 3x aggregation for the virtual machine traffic, but for the same VLAN there's a separate cable that the host uses. Both are reachable from one ...
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How to test network / internet stability

Short explanation: One of our computers keeps disconnecting randomly in steam. We run an arcade with several identical computers in the same wired LAN. Most used games are from steam - or in steam. It ...
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How to disable internet but remain connected to LAN network?

I have a windows computer that I want to isolate from the internet. I need this computer to remain in contact with other devices on the network and be able to VNC into it. I saw some solutions saying ...
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What happens if a USB Ethernet Adapter has the same MAC address as the PC's network card it is connected to?

What happens if a USB Ethernet Adapter has the same MAC address as the NIC? Is it possible for internet connection to pass through the usb-ethernet adapter succesfully or not, in that scenario?
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Direct attach sfp+ cables (passive) connection issues after power restoration

I have got two servers with SFP+ capable network cards connected to the Unifi Switch uplink ports. Each of the servers has its own UPS and the switch shares the UPS with one of the servers. The ...
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Options for an ultra-fast small LAN [closed]

I need to transfer several terabytes/day between three windows computers. Two computers are employed to acquire medical imaging data (500 Gbytes/sample, ca. 6-7 samples/day), and the third is ...
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vsftpd anonymous read and write

i would like to run vsftpd as a local ftp server where you can only log in anonymously. I can start the server with the following configuration, but I can't log in. i have assigned anon_root to the ...
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Do I need routers in a LAN with 2-firewall DMZ solution? [closed]

I have a LAN that will host an EXTRANET site with 5 servers, and 2 exchange edge servers. The LAN will service an office in a 5 story building with about 100-200 users on each floor. Each floor will ...
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Tool for searching computer in network and alert after connection

I'm looking for some tool where I can schedule ping loop some computers in my network and after response some alert (email or custom command) will be fired. That tool will be working on Windows 7 ...
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Connect two servers locally via 10Gb switch

I have two linux servers on a rack both connected to my company network. Each contain 10+ TB of storage. Both servers can mount the others storage array over the network as it exists. However, I have ...
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Mint & Ubuntu don't work on LAN, work on other networks

Good evening, We have 15-20 devices running on our office LAN. Suddenly last week, the internet (both wired and wireless) suddenly cut-off on both of 2 Mint desktops. By cut-off i mean that the wifi ...
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Moving from a dual ISP set up to a single ISP facility with mixed IP handling (DHCP with Static IPs)

First time posting a question here, please bear with me. I've been assigned to manage the migration of all our computers and servers from a facility where we have 2 ISP's to a facility where we're ...
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Multiple IPv6 routers on the same network

I have two ISPs for my home network. They are connected to two separate routers. If I run radvd and dhcpd on both routers at the same time, I get no IPv6 connectivity. My IPv6 connectivity only works ...
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Redirect purely LAN communication to a different interface and port (Linux)

I have the following situation: One interface (device) identified by an IP address of 192.168.1.x (I1) that's connecting through whatever service to another interface with IP 192.168.1.y (I2) to port (...
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Why does LAN stops working if switch is connected to two upfeeds?is [closed]

If I connect my switch to two upstream feeds from my ISP, my internal LAN stops functioning (see illustration below). What is it in the TCP/IP protocol that is disrupted to cause the above? ...
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Connect One Linux PC to two different LAN networks (one production, one for testing)

Cable Modem (with 4-port switch) | / \ / \ / \ Router1 Router2 | | LAN | ...
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How to ping from a physical machine to another physical machine's VMware network VMnet8?

I have a physical machine (first pm) which has VMware Workstation 14 Pro. By the configurations and settings I can ping among all the machines and any internet address from them as normally. However, ...
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nmap showing different results every time

I am running: nmap -sP 192.168.251.0/24 to see the hosts in the office network. Every time that I run the command it shows a different result, for instance it sometimes shows 192.168.251.13 192....
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Pull DNS entries from Dnsmasq to other DNS server

Background My department has a development network that is based on the idea of bringing up lots of local LANs for testing equipment in various configurations. The bridging development network ...
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How to protect LAN outlets against hackers and malicious people?

We have LAN outlets in conference rooms. They should be used by users from our company. Obviously from time to time there are also visitors in those conference rooms. And they could be alone in those ...
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possibly excessive arp traffic related to network slowdown

I was looking into reports at one of my customers that the "network" was slow. (File access/saving/image loading from the server taking longer than than it usually does). The basic setup is a ...
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Neither ping, nor SSH to VLAN 20

I have some questions in regards to the ping and the SSH to Switch2. It is in VTP client mode. I tried to SSH to the Vlan20 IP address which is 192.168.20.22/24. I couldn't Error: % Connection timed ...
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Network computers visible on LAN but not Wi-Fi

I have drawn a scheme of my network here: All the computers except A are connected via LAN and can see each other, while A is connected via WiFi. It has internet access but it cannot see other ...
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Mysql Workbench Connects with IP not with Hostname on Local Network

Connecting to an Ubuntu machine from Win 7 over LAN using MYSQL Workbench. Using hostname 'chili-xeon' fails to connect. I can ssh and ping using that hostname. I can also connect with Workbench ...
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How to access host in LAN using alternate IP address?

I have a server in LAN (192.168.1.0/24) with static IP address 192.168.1.100, now I would like all service on this server to be accessible using 192.168.100.100 for hosts in the same LAN(192.168.1.0/...
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ubuntu server how to assign ip/port a local domain name

I have an old PC running ubuntu server. It has multiple services running which are accessible via web UI's at my servers' ip and specific port number. Ex: 192.168.1.166:7878 - Opens Application 1 ...
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2answers
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bind9 on ubuntu not pingible from bind9 server (but pingible from other machines) (noob)

As in question. Is it possible to ping on bind9 server machine to dns its serving? I want to do: ping hpc.lan PING hpc.lan (12.1.1.1) 56(84) bytes of data. 64 bytes from M.hpc.lan (12.1.1.1): ...
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Stream an m3u8 URL to LAN

I have a stream from the web in the form of an m3u8 file. Since everybody in the office watches the same stream, it is not effective in terms of network traffic. How can I spread the stream among the ...
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Data usage in case of VPN?

My organization has provided a windows 10 laptop. When I connect to VPN from my home through my home internet and download a file of say 1GB from: Intranet (connected servers) Internet (public) In ...
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1-1 NAT addressing on a Moxa EDR-810

I've been trying to configure one of these routers for a couple of weeks. I'm new to the configuration of routers, I've only set up 1 before this so its not going too well (Took me 2 weeks just to get ...
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openwrt router not forwarding internet traffic

This is my setup: ISP-router (internet) <--> openWRT router [wlan0: 192.168.2.1] <--> [wlan0: 192.168.2.107] and openWRT router <--> PC [wlan1: 192.168.5.12] <--> ...
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2 Offices, 2 Internet Connections, 1 leased line connecting the offices: How to route LAN traffic?

We have 2 offices, each with their own internet connection. We also have a leased line/LAN extension provided by the ISP at each location as well. The way this works is that the ISP provided us a ...
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Connecting 2 Physical Offices, Separate Subnets, FortiGate as the Gateway for each site, leased line/LAN extension in place

I have two offices, each with their own internet connection and there's also a 'LAN Extension' or leased line connecting both of these offices (essentially 2 ports in the ISP router for each site, 1 ...
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Is MS Windows known to be non-compliant to RFC3927 or did we hit a bug?

We have recently encountered a situation where a Windows 10 machine assigned itself a Local-Link address of 169.254.0.33. According to our reading of RFC 3927, section 2.1, this is not allowed. ...
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PFSENSE Topology w/Cisco L3 Switces

I have the need to configure a router on a stick variant where I have WAN in (not shown on image) and 2 LAN ports that go to each of the switches shown in the image. The vlan 'subinterfaces' live on ...
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Use Docker for network services

I know it sounds duplicated, but I can't find my answer on the internet. It's about 1 year I'm using docker for application development and now I have to handle a local network and I have some ...
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sql server slow only on LAN

I have a MS SQL Server instance on my server. Running select * from sys.columns takes 00:00 seconds. (just as a sample, most queries have same issue) When i run the same query in SSMS, it takes 30 ...
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Make local network not visible from VPN network

I use Tinc as VPN network and I use one of my peers as default gateway. I would like to try to make the local lan network of the gateway device not visible from other peers. So, in other words, make ...
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Restricting access in LAN network

I'm just starting with networking and hope that someone could point me in the right direction. I'm trying to assign IP addresses to the network on the picture. I also need to restrict access from Lab ...
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2answers
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Setup Internal DNS Host

I am having a domain (say, example.com) and a Static IP(say 192.168.1.200) from my ISP. The A record of domain points to that Static IP. I have used port forwarding in router to route all requests to ...
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1answer
34 views

What network to use for HDMI over Ethernet Extender

I'm interested in "HDMI over Ethernet Extenders" for my firm. Most say in their description that they need a closed-off or separate UPnP-Network. Does that mean I can't use the Extender in my already ...
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Debian port forwarding by domain [duplicate]

I want to redirect ports to local servers by domain name. I have main server, server1 and server2 on my lan network. Domains domain1.com and domain2.com are pointed to main server. How can I forward ...
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351 views

OpenVPN server on Windows 10, client can't access Server Lan

I want to set up a VPN configuration with a Windows 10 as a Server to provide access to it's Lan to one (or more) VPN clients. I'm doing it with OpenVPN 2.3.X and CA, certs and Keys are created annd ...
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114 views

pfsense in a VM but host has containers

So I want to transition from my Netgear R6400 router to a pfsense router in a VM. The problem is, how do I set it up such that my host is still network accessible, as well as the LXD containers on ...
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560 views

Disable Internet access (Access type) for a specific interface

I have a Windows Server 2008 R2 with two network interfaces. I need to disable internet access at the interface "Network 2". Actually it is done because I configured a specific DNS on this interface ...
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1answer
285 views

How to setup SSL certs for a LAN web app server

I want to setup a ticketing system in my company for managing/tracking support tickets and a knowledge-base of past issues. I am having trouble figuring out the best way to encrypt the traffic to ...
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1answer
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Computers does not shows in network place

Computers are not listed in network place, But able access computers using remote desktop or directly typing computer name on address bar (\com_name). I found FDResPub and SSDPSRV services were ...
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How can I migrate my network+printer configurations into new Windows?

One of my office Windows machine has been crashed( blue screen). I am browsing my file system (crashed pc's drive(c:)) from my Ubuntu Live CD. I am setting up new OS on my crashed pc. I am looking ...