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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No layer 2 traffic in an Open vSwitch bridge
I see no traffic in layer 2 and above in an OVS bridge, but I do see layer 1 traffic.
I have the following setup:
I have created a Linux VirtualBox VM with three adapters: NAT with port forwarding the ...
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share two network interfaces on linux
I have a Linux PC (ubuntu 22.04) with a network layout as below:
Internet <-> Router <-> PC <-> edge device <-> Switch <-> APs <-> devices
And with two Lan ...
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Splitter switch with multiple network
With an increase in informatics insecurity in companies, I try to increase the security of my network, but I encountered a problem trying to set up my ideas. Right now, each person in my company is on ...
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Devices appearing and disappearing from the network
I have recently noticed a weird problem where clients and servers are only sometimes visible to browse on the network. All connectivity is good, I might add, and all devices can be browsed to by UNC ...
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Portable router doesn't forward broadcast MDNS IPv6 messages
I have a device (a motec ECU) that is connected throught a wired eth, which uses IPV6 with MDNS broadcast messages (ff02::fb) to get discoved in the network.
If I connect a laptop directly to the ecu ...
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HP dl360 gen7 connected to internet but can't see the lan
My HP 360 gen7 computer had been running Fedora for years but yesterday after(during dnf update) a kernel update, it has started acting weird. It is the same kind of behavior that started during that ...
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Can't connect to local website on a specific device
I've created a website which I host on a home server in my local network. When I'm not in my local network I can access the website with the external IP address and the domain. When I'm in my local ...
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Set up a reverse proxy for local domains
My web server (apache2) is accessible on my LAN with its host name, let's say, jarvis (url: http://jarvis/).
I have a Gitea instance running in my local network which is accessible via http://jarvis:...
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How does Windows recognize the Ethernet Networkname?
I try to understand, how Windows recognize the correct LAN\Ethernet Networkname shown on the Network Tray Icon or in the Network Settings.
On the DHCP Server the "015 DNS Domain Name Option" ...
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UFW logs - connections to closed port
I'm probably missing something easy to understand:
I've a tiny homeserver where there are some docker containers inside it, running on 192.168.1.10.
On top of them I've NGINX which works as a reverse ...
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What is causing large TCP messages to have low throughput in one direction when using ethernet-to-wifi bridge?
I have two computers, Orin and NUC, which are connected via ethernet cable directly.
NUC is connected to a router with internet via WiFi (for completeness, not relevant to problem, I hope), and is ...
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What to do with DNS if IP address is changed?
I'm working with Windows Server 2016 Essentials. Someone in the organization installed a Linksys mesh network into the router that our server was once plugged into. The Linksys parent node's DHCP is ...
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How to troubleshoot spotty connection to a LAN computer
I have a Windows 11 Pro machine (192.168.2.40 - WiFi Intel Wireless-AC 9560) that having spotty access issue to a local Linux SAMBA server in (192.168.2.33 - wired to the router). Pinging sometime ...
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Localhost NGINX server returns 403 Forbidden, but works on host machine
I have a NGINX setup serving a React app and an API on my local network, with a valid SSL certificate generated by letsencrypt.
My domain is provided by domain.com, I'm going to refer to it as ...
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Configure an OpenVPN client for LAN traffic only
We have a server where we want to connect other servers and clients via VPN. In some circumstances, I want full network traffic to be routed, so that the client's public IP address becomes the same as ...
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How to properly setup a Guest Network on the TP-Link EAP115 AP?
I have a TP-Link EAP115 Access Point. I would like to setup a guest network, so that people who come to my house and use the WiFi cannot port scan the rest of my network. And I really only care about ...
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Access to specific domain from specific IP in local network
I have in my local network some docker containers with firefox that running on different ports like 5801, 5802, etc.
So that only the device from which the launch was requested was accessible, i used ...
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routing or redirecting a specific url traffic to different server
Our LAN is connected to the internet through a local squid proxy setup (10.1.0.139:3128). All users on LAN used to access the internet through this proxy server.
Recently our head office has made a ...
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Host ID's on Network not in succession of 'active' or established devices?
Disclaimer: I am new to networking.
I ran a arp -a command on Terminal to establish what devices are currently active on the network. I was returned a number of devices with Host ID's that were not in ...
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DHCP Discover Packets don't reach server
I have a dumb IoT device that simply asks for a DHCP lease and gets no answer. I figured out that the request never reaches my routers DHCP server and I have no clue on why that happens. If I run a ...
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macOS: How do I expose a localhost port to the LAN IP on the same computer?
On a Raspberry PI I have, whatever I run on, say, http://localhost:8080, is automatically visible to other computers on my local network at http://192.168.0.xxx:8080 or http://pi.local:8080.
This ...
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Where does Ubuntu log TCP connections?
When doing some network security checks (on which I am an amateur) for my office PC, I discovered a few unknown tcp6 connections (with netstat -nt):
Active Internet connections (w/o servers)
Proto ...
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How to delete shared network folder
I am the administrator and have all the necessary access rights but not able to delete. What should I do?
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OpenVPN permanently add LAN device
I have an OpenVPN server running on a Debian computer that I can currently connect to no problem. However, I am trying to add a local LAN computer to the VPN network. I know about pushing routes, ...
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Telnet succeed but sending request with postman failed with `Error: read ECONNRESET`
Using telnet, I was able to check connection was established with port 443 on another PC (IP xx.xx.xx.xx) in my LAN. But sending a request with postman to https://xx.xx.xx.xx, I received ECONNRESET. ...
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How do I route all public traffic through Wireguard but not local traffic?
I know there's a series of CIDRs that I can use to cover all public CIDRs and leave out local CIDRs, but I cannot find this anywhere and I don't recall where I found it a couple of years ago when ...
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Can't connect Fedora computer to LAN via switch
I am trying to network a few computers on a LAN with a switch (no internet necessary). The networking devices I have available are a router, a managed switch, and an unmanaged switch. when I connect ...
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Send email between servers using a crossover cable and postfix
I don't know where or what I should be reading about when I want to send email between two different domains as follows and please give an example basic Postfix configuration. All conditions in the ...
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My remote server can't access from my organization while bulk user connected
We have running Linux server on Canada. On that server web application and mail services are up and running. We have used from office (India) primary internet connection (Leased line) with bulk users ...
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Office shared-disk error "We are connecting to \\server, please wait"
When browsing a fileserver direclty from Office applications as Excel/Word, it takes a long time to connect to the shared-disk, so opening/saving files are a problem (see screenshot).
error loading &...
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TrueNas- Adding another IP on different interface
I am trying to add another IP to my TrueNas on a separate interface than was initially configured, to have a dedicated interface to use for something I am running. The server has four total ethernet ...
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Accessing webserver over LAN
I have a macOS laptop running a application. The UI uses port 8081 and the API uses 3031. I can access this on the mac system using localhost:8081 and all of the API calls work through port localhost:...
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Print Infrastructure: How many LAN printers is too many?
I am a new network administrator for a larger company that is planning on moving to a new building. Currently I am working on designing a layout for each office, as well as the warehouse in terms of ...
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Can I use Laptop with one WiFi and one Ethernet Port interface to setup firewall - OPNSense?
I am trying to setup OPNsense Firewall at my residence using a spare laptop which has one WiFI and one Ethernet interface. I was able to install OPNsense and configure the interfaces to LAN and WAN. ...
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Firewall throughput and LAN Speed
A quick question, I'm considering to buy a firewall which offers throughput up to 450 Mbps and has fast Ethernet ports, my understanding is that the firewall limits the internet speed but not LAN ...
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LAN speed fluctuations
I am totally out of my depth here, but hopefully someone can at least tell me if what I am seeing is "normal" or not.
I am in the process of migrating a VM from one ESXi host to another via ...
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Can access site from external network, but not from internal network
I have registered a domain name (say leavemanager.somecompany.com), it points to a web based application (web app) hosted in a windows server machine running apache2. I have port forwarded http/s ...
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Can issues in my network infrastructure cause faults on my DSL/FTTC connection?
I hope I can explain this coherently... we have a copper wire connection to the building from a FTTC cabinet and a typical UK VDSL modem plugged in via traditional UK phone plug, providing internet ...
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ubuntu server nginx not working ufw configured
I have fresh installation of Ubuntu server 22.04.
I can't connect to my docker container.
Here is some more information:
ufw status
Status: active
To Action From
-- ...
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Load balancing ISPs without double NAT [closed]
I configures my TP-Links ER605 multi-wans router to load balance between my two ISPs (that is working). But since my Web/NAS server is behind my router on the 192.168.2.0 network, any computers on ...
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IPv6 access to site behind OpnSense
I am new to IPv6. I have dedicated server with both IPv4 (single external IP 135.x.y.z) and IPv6 network 2a01:abc:def::/64).
Within this server I have few VMs and 2 networks (WAN and LAN).
OpnSense ...
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Propagate local time over NTP to LAN
I have synchronized my L3 switch to an external time server, this is working correctly. However I'm in Europe and we have CET/CEST switching and I get UTC from the configured time server. I did setup ...
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Connecting hundreds of servers via the local network (LAN)
I'm caching lots of data in memory to a local Redis server. The server will need to connect to hundreds of other servers in the same data center (as they all need to access the same information ...
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How to block access to LAN through Open VPN running in Docker?
I'm running Open VPN server inside Docker on Debian 10. It works great.
The problem is the connected client now can access my devices on my local network. I would like to block all access to all VPN ...
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Reach LAN Web Server from Amazon ec2 OpenVPN AS Instance. Possible?
Here's my desired end state:
From a WAN connection (my phone, a PC that I happen to be using outside my home, etc.), I want to be able to enter an URL (https://example/myapp) that my web server (nginx)...
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Cant ping my PC on LAN until user is log in directly. destination host unreachable
It shows this when pinging from other devices in the local network
From 192.168.0.191 icmp_seq=1 Destination Host Unreachable
However once I log in my PC (192.168.0.191) I can ping it from other ...
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Tracking Down Source of Network Instability
If the issue happens, it happens at 10am, for about 1minute between onset and return to stability. It does not happen every day. During the minute, pings go through the roof and packets start to drop,...
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What does exactly break with double NAT?
There are many warnings about double NAT networks.
DSL---modem with router-----second router
configured by ISP inner network
first NAT second NAT
What will exactly break ...
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Did something stupid that interrupting Ethernet access for "some ports"
I have just installed Ubuntu Server 20.04 on my server, but I executed an automated script without carefully watching, and it resulted in a really weird scenario.
I also have multiple webservers ...
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Is it possible to send mails via Postfix on another machine in the same LAN without having to relay it?
I thought this was a quite common situation, but I'm struggling a bit getting this to work in the easiest way possible, and also, I'm not sure if I'm doing it in a good/recommended way by now.
I have ...
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