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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Consul as service discovery and configuration server in on premises local network

We are developing a product that will work as a set of services deployed on-premises (e.g. in the local network of an office, factory, etc.). Since there can be lots of deployment targets for each ...
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Can I connect two LAN's that have no static public IP through VPN server?

Can I connect two LAN's, for example main office and branch office LAN's that have no dedicated public IP (only connected to internet through cheap ISPs) through one VPN server that I installed in VPS ...
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Separate LAN/DHCP network for each VM under same Physical NIC

I have a bare metal server with 2 NIC(eth0 and eth1). eth0 is connected to the internet and eth1 for LAN(DHCP must). Now I need multiple servers like that. So I have decided to go for VM. I have ...
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Prevent direct access to my server using reverse proxy

I have a web server setup in Microsoft Azure and it has a domain name associated with it like www.example.com. This web server is very critical and i don't want anyone other than 1 or two people to ...
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Path MTU is not always 9000, only in one direction

I have a question about MTU or path MTU. In my setup I have 2 computers (firewall, Windows PC) and one NAS, each with a gigabit interface. They are connected throughout the same gigabit switch. In all ...
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Creating a WiFi Access Point with a New IP Space [closed]

I just moved into a dorm where each room gets a limited range of IP addresses to connect their devices to. For the sake of comfort (I don’t want to assign fixed IP addresses to each of my devices), I ...
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How to configure multiple LAN connection with static for Centos7 physical server to balance bandwidth of over hit on server

I am working with a physical server with Contos7, here I have a web application hosted, My have setup with a LAN connection with a static IP, but the problem is when large numbers of users are ...
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Windows Firewall - Protected network connections?

In Windows Defender Firewall, under Advanced Settings, there is a "Protected network connections" setting for each profile (Domain, Public, Private). An image of this setting: Protected network ...
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Loopback adapter cannot connect to the domain network

I am working on a project creating Microsoft Print Server Farms with High-availability. It works perfectly with the Loopback adapters in the servers and a network load-balancer. The Loopback adapters ...
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1answer
53 views

How to setup dual WAN & two LAN Networks correctly?

We've just been switched from ISDN to SIP. Since the guy who installed and configured the phone system does not have a lot of experience in setting up LAN networks, we need to do it ourselves. My ...
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607 views

WLAN QoS setting: WMM vs SSID?

I've got a ZTE router which has Wireless LAN QoS setting WMM and SSID where SSID is the default. What should SSID mean here? See attached screenshot.
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IP over several virtual bridges in linux

I have 2 bare-metal linux server in DC, each one has external and internal interfaces. Internal interfaces are linked directly to each other. Lets say i have eth1 on ServerA and eth1 on serverB. If i ...
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4 PCs in the LAN (with internet access) + 1 VM PC in the same LAN and internet access

I faced today a problem with setting up a working "work-place" with 4 PCs and one virtual machine placed on the one of the PCs. I managed to go through the connecting PCs through switch into the same ...
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Bridge to LAN through VPS running OpenVPN

I have my LAN at home - the fiber comes in from my provider and goes to their box, which acts as modem and router. I've disabled their router functionality and I connect only a single client - an ...
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can't reach server via HTTP and SSH only Ping and Traceroute works

I am struggling with a weird problem for the last few days. I have a virtual dedicated server for my domain. Some machines on my local network have lost the ability to access it, or can only access it ...
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IIS LAN and WAN separate SSL certificates for the same server

I have a public web server that's also extensively used from the LAN. We're standing up a Windows AD CA server for the LAN side but we'll also need a public SSL Certificate for the web server. The ...
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Why may a machine be seen as having a local address by ssh server when sshing to itself through public IP?

I configured sshd_config on two machines A and B in the same way such that connection is possible in local network with password : Match address 10.0.0.0/8,172.16.0.0/12,192.168.0.0/16 ...
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Fail to ping/ssh from single machine to another specific machine

I'm using Google Cloud, there are 2 machines on the cloud which can't ping each other, A can't ping B, and B can't ping A too; all other machines can ping to A&B as usual. But it happens only on ...
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Setting DHCP and DNS servers

This is the topology I'm working with: enter image description here I have configured the routers like this: Router_1_Mikrotik ip address add address=192.168.10.10/25 interface=ether1 add address=...
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What issues would arise if I decide to move my local network to IPv6?

I am managing a small corporate network, and actively investigate the possibility of getting rid of IPv4 entirely, at least on the LAN level. I intend to disable IPv4 DHCP and connect to each machine ...
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iptables Firewall for others pc

I have a VM (called 1) with an easy iptables configuration. iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE iptables -A FORWARD -i enp0s3 -j ACCEPT I want to set this VM like the firewall of ...
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Can't get IP from DHCP on MacPro

In little office, with 4 people, I'm setting a LAN with these equipment : NAS Printers Router cisco RV130W 4 Macintosh Pro 1 Windows 10 laptop Internet modem When the Mac are on modem network, DHCP ...
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Limiting network logins to local subnet windows server 2008 r2

I have an internet facing Windows Server 2008 R2 install. Lets say it's on 70.0.0.74. On 70.0.0.73 is our NAT/firewall that hands out IP addresses from 192.168.1.XXX. I want to be configure the ...
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1answer
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Pinging computers on the network (request timed out vs. cannot find host)?

I am working in an IT office where I have to do remote file transfers and software upgrades over the network. So before I start working on a computer, I ping the computer name (e.g., AB395729) in ...
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IBM x3250 M5 ethernet suddenly off

I have IBM x3250 M5 with Ubuntu 14.04 running for 4 years with no issue, but yesterday the ethernet is suddenly off. No ethernet LED is on. I've tried changing the cable, resetting the bios, ...
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How Elastic / Static IP addresses work, specifically why they need one per “region”

I am looking at Google Cloud and AWS and when you select "reserve static IP address" essentially, it requires you to specify a region like us-east-1, etc. I understand that regions are different data ...
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Netxms “no grace logins allowed” error

I am using netxms server on my local machine in LAN. I was able to login using management console only in the LAN using other or that machine. After some time, I was suddenly unable to login as it is ...
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1answer
157 views

Ubuntu: Multiple interfaces, one lan only

I have 2 interfaces: wlan0: Connected to normal network with DHCP (has internet) eth0: Connected to LAN only. Used for PXE boot and NFS The network-manager service is not installed on this machine. ...
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131 views

MySQL query is very slow over internet

I'm having an issue with a very slow query in an C# WPF application. The application connects to a MySQL-server. As long as the application is used on my LAN, everything is going fast. When i use the ...
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Can a SSL certificate be used on a locally hosted website?

I tried to install Let's Encrypt on my local server. But I could not because it threw errors that I need a fully qualified domain name (FQDN). I use server.arch.local as my hostname. Does it not ...
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Unable to ping interface IP due to Routing Tables

I have a instance/VM having 3 interfaces as below eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 inet 10.34.154.3x netmask 255.255.254.0 broadcast 10.34.155.255 ...
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I can't conect to my R610 iDRAC web interface

I'm a complete networking idiot and I've fallen at the first hurdle. I have an R610 here, just hooked it all up and powered it on. Checked the iDRAC settings (made sure it was using the shared NIC, ...
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1answer
66 views

BIND DNS lookup shows a wrong IP for the domain name

I have a BIND DNS server in a LAN with hostname --short : server hostname --domain : unisof.com hostname --fqdn : server.unisof.com hostname --ip-address : 192.168.1.100 /etc/bind/named.conf....
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Network fault tolerance for LAN clients

Goal: Provide fault tolerance for LAN clients so access to a service with a service-level agreement (SLA) is not interrupted in the event of an incident with a physical switch. Question: Is there a ...
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My 2 PCs got same MAC addresses, how to fix?

I have several PCs in my small shop, are connected as a LAN. I really don’t what this happened but today I noticed that one of PC’s softwares (teamspeak) cannot connect to other PC which runs a team ...
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What should the gateway address (“route”) be set to if there is no gateway on the network?

I currently have a LAN-only network configuration with several devices including a Linux based controller. This network features a single managed switch but no router. My Linux device can't seem to ...
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1answer
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Network connected devices not visible from a workstation solved - but why?

The problem was that devices on the network were not visible in Windows Explorer's Network folder. The devices were accessible using Remote Desktop Connection, and in many cases, the devices could be ...
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Load Dynamic Network Configuration Files

is it possible to load a dynamic networking config file? I have multiple VMs and i want to configure all at once and not every single VM. Every VM has a eth0 interface and i want to configure a fix ip ...
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Handle traffic over network bridge

I have 2 network, LAN1 connected with some hosts and the second LAN2 with proprietary Hardware, similar to PLCs. This kind of PLC is connected via Ethernet and is used for home automation (ie Light ...
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Multicast UDP traffic flow in the distribution layer using VSS

We have a campus with 2 different building with few floors on each building and 100's of systems in different VLANS at each floor. At the Access layer we have Layer 2 switches at each floor connecting ...
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1answer
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How to monitor data transfer speed and volume between two computers on same network

My application on Win2012 Server stores its cache on a ZFS appliance in the local network, during peak load we are seeing some performance degradation, this only happens in the production environment ...
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1answer
369 views

DNSmasq on 2 interfaces

SysInfo: ubuntu 18.04 external access point (with its own internal linux system) => interface ap1, IP: 192.168.13.1 external access point (USB stick) => interface ap0, IP: 192.168.12.1 hostapd ...
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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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2answers
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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 ...