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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iptables: when to use input or output with LAN connections?

In a SSH server/firewall (192.168.2.3) that has a LAN behind it, say 192.168.2.1/30, will the connection attempts made by the internal machines of the 192.168.2.1/30 network be interpreted by the ...
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1answer
27 views

how to connect 2 networks with different routers

I have a TP-Link TL-ER6120 VPN router and a Cisco RV-180 VPN router. I want to have 2 networks with two routers connecting each other. My network is the following: Internet -----> TL-ER6120 ...
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1answer
19 views

Map ports from 2 switches to simulate a straight through physical link [on hold]

Is it possible configure 2 brocade ISX 6430 switches connected together to directly map a port on switch 1 to another port on switch 2 so that whatever is plugged into the port is treated the same as ...
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1answer
70 views

Redirect DNS requests for 8.8.8.8 to a local DNS inside a LAN

I have a local network (10.0.0.0/24) with a gateway (I'll call it G, IP 10.0.0.1), a device (I'll call it N, IP 10.0.0.31) making DNS requests directly to 8.8.8.8 completely ignoring DHCP setting for ...
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1answer
13 views

how to connect wifi devices to local server without external router? [closed]

I have a server running on a laptop which I use for live presentations (server is usb web server, on windows 10 TP), I want to be able to connect to it with tablets, cell phones, etc via wifi, but ...
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1answer
22 views

IPTables from public ip and port to lan ip

I own 3 public IPs for my server and I have multiple VMs that have their own 'job'. The server has 1 NIC. Public IPs: XX.XX.9.247 (MAIN) XX.XX.21.141 (additional) XX.XX.21.142 (additional) LAN ...
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3 views

Cannot ping 10.0.0.105/255.255.255.0 from 10.0.0.2/255.255.255.0 until some considerable time has passed [migrated]

My questions are can anyone tell me why I cannot successfully ping 10.0.0.105 from 10.0.0.2 until some considerable time has passed? Can anyone tell me how I can configure things so that I can always ...
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3answers
44 views

Must a L3 switch always have an IP address?

I have 3 L3 switches connected as shown below: All devices are in the same subnet and have IP addresses : 192.168.150.X/24 Shouldn't the switches be able to forward traffic without requiring IP ...
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2answers
37 views

Extend wireless LAN with several access points?

To extend the area of my wireless LAN I thought on buying a couple of wireless access points and giving them the same SSID + Security (WPA2) + Channel and all connecting them by LAN with the same ...
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1answer
34 views

How to efficiently subnet a network [duplicate]

I have base ip address 10.6.0.0/16. I need to divide this network into 12 subnets, and I need at least 80 computers in one network. Please explain how to calculate correctly subnets. I understand that ...
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1answer
37 views

Multicast and duplicate IP addresses

I've developed a Multicast UDP client/server application, which allows a user to remotely change the network configuration of devices belonging to the same multicast group. But what if a device was ...
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1answer
38 views

How to connect to external server using router from VLAN's

I am newbie. I am trying to build network system in Packet Tracer. Now I have such network layout. I have different VLAN's Accounting and Sales. I have configured this using subinterface in ...
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1answer
35 views

STP fixes non-looped network. Dumb switches kill network. Can anyone decipher this wireshark readout for me?

Greets long story short we had a power outage here and when the network came back online it would crash out to a flood of ARP requests. This would lead to packet storm/network loop, but after ...
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0answers
18 views

Diskless cluster using Perceus: nodes don't boot

I'm constructing diskless cluster using Perceus. Few days ago, I succeed Clustering using Perceus. Nodes are booted well and i can use ssh to nodes. Even i run mpi program. Today, I tried to ...
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3answers
108 views

LAN access with Cisco AnyConnect Secure Mobility Client v. 3.0.4235

Whenever I connect to a VPN server using the Cisco AnyConnect Secure Mobility Client v. 3.0.4235 (probably also with other versions) I lose access to my LAN. I hope to remedy this by manually adding ...
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40 views

Windows VPN Server on Amazon EC2 Instance

we are small software company. Our web/db servers were in different networks. Recently we decided to create small network on Amazon EC2 and move all those servers to EC2. I have created several ...
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4answers
73 views

Server nics on two subnets: gateway?

Server is connected two two separate, isolated subnets via two physical nics. Is there any way the server can act as a gateway for the two networks to communicate? To clarify, I don't want any ...
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1answer
36 views

Access domain from internal network [closed]

I have a domain, example.com and it has a A record pointing to my external IP. Port 80 is forwarded to my server. However, when I try to access it from inside the local network (behind the external ...
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35 views

openswan inside a lan

I need to create an encrypted channel between two computers inside a lan using openswan, so I can show how the encrypted traffic is using wireshark. I installed openswan in both computers (running ...
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2answers
97 views

Restrict access to apache tomcat in local network [closed]

I am setting up an apache tomcat webserver for my local network and I want to block any external access from outside of the local network (the internet) for security reasons. Can I configure tomcat ...
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1answer
57 views

How to scan ipv6 enabled hosts on my LAN?

I want to discover all my neighbors who enabled ipv6 protocol and still alive. I tried ip -6 neighbor show but it shows nothing. Can someone recommend a tool and show some examples? Thanks.
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1answer
85 views

Setup Windows Server Local DNS on WAN

I inherited a WAN with centrally hosted DNS,AD Servers. I have clients connecting to Application Servers hosted locally on site. Problem is when the WAN link goes down clients can't connect to ...
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1answer
20 views

WebServer - moving MySQL to another server on LAN for gaining more processing power?

I have website with high traffic hosted on dedicated machine. This machine running out of resources. Will moving MySQL database to another dedicated machine on LAN give more resources to website ...
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1answer
123 views

NTttcp shows slower throughput on loopback (127.0.0.1) than on network

I am using NTttcp to find a baseline for what throughput I can expect between a client and server on windows. When I ran the client and server on two different machines on our LAN I got the following ...
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228 views

pfsense access openvpn client´s lan

I want to cover the following case: pfsense server´s LAN: 10.1.0.0/24 openvpn client network: 10.2.0.0/24 Local network of one openvpn client: 192.168.2.0/24 Working: Access the network ...
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45 views

How can I troubleshoot my router NOT routing between LAN PCs?

I have a FiOS router, which has 3 PCs connected to it. One of the PCs used to run several servers/services; that I previously (using a different router from different ISP) successfully connected to ...
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1answer
52 views

What type of switch should I get to implement a site with around 140 desktop machines, plus around 20 SIP phones? [closed]

We're moving to a new office and we will be needing to setup a network closet. I'm estimating that we will have around 140 ethernet ports and will be using CAT6a cabling for 1Gbps connections. I'm ...
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0answers
67 views

vigor 2960 won't start after firmware upgrade

I tried to upgrade the firmware of a Vigor 2960 through their interface. Everything was working fine until the reboot. The upgrade was from 1.0.7.0 to 1.0.8.2. It rebooted for a while and now I ...
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104 views

Nodejs website not accessible from LAN

I've deployed two nodebb instances. One on default port 4567, the other on 12001. The first site works well and is accessible from LAN, while the other doesn't. I expect that the problem to be due to ...
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1answer
58 views

Possible to auto assign static IP after first DHCP? [closed]

I'm building networks with 256 devices that can't be pre configured (they all must start from the same configuration, it's not possible to give them static ip beforehand). Is there anyway from a ...
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3answers
105 views

Encrypt communications on local network

I'm developing a web application that runs on a server local to the same network as the client- basically, instead of a central web server, each customer site will have its own server hosted on the ...
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2answers
219 views

sonicwall-multiple IP's for same interface

I am new to sonicwall.Is there any way to add multiple ip's to a sonicwall interface ?. In my lab there are two local networks connected to same switch (networks are overlapped). I need to communicate ...
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1answer
64 views

Securing a LAN whose wires cross over public hallway? [closed]

I want to record video in rooms (A B C) and start/stop/monitor the recordings from (only) room D. There is a public hallway separating D from the rest, and the data is sensitive. Preliminary setup ...
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158 views

Remote client (android) can't connect to OpenVPN sever behind LAN

My plan is to connect over tunnel (via Internet) android phone with my LAN at home. I set up OpenVPN server behind (router) lan (ip adress is 192.168.1.3). There is also my laptop. Port 1194 UDP on my ...
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1answer
38 views

How do I “connect” one wireless network interface to anothet [closed]

Basically I have two dd wrt routers(TP-LINK and ASUS) working in "LAN-WAN" infrastructure(so they both gateways, gateway-router infrastructure doesn't suit to me) and I want to somehow "connect" ...
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0answers
37 views

Most secure way to encrypt critical data to be shared, edited and seen (must ALWAYS be secure)

This question does not rely on time... so it's not about keeping data on tape or anything similar. I have 3 distinct PCs with critical information. PCs are running Windows OS. They all hold critical ...
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0answers
334 views

How to access the setup wizard on Sonicwall TZ 100 firewall

I am trying to setup a TZ 100 firewall. I am following these instructions and I have attempted to follow these instructions: "Connect your computer to the LAN (X0) port on the SonicWALL. Connect an ...
2
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1answer
55 views

Is there a better way than VPN tunnels to access local tools in remote DCs?

I have created a fancy interface which pretends to be an unified interface to access to different local tools located inside different datacenters. These tools are not accesible from the outside. To ...
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50 views

Configure freeradius as a linux service

I install freeradius-2.2.0-7 on CentOS 7, and I finished configuring it, for the test on the same Linux host, he replied "access-accept" but when I repeated the same test from another host on the ...
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1answer
120 views

“dig +trace fqdn” and “dig fqdn” do not give the same result on a LAN with windows DNS server, why?

in my company LAN I have a Ubuntu 14.04 server running in Virtualbox (as guest) on a Windows 7 (the host) with network interface bridged (so the Ubuntu server belongs to the LAN, with its ip: ...
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1answer
1k views

How configure 2 Lan cards in Windows 7/8 pc one to connect to Internet and other to Local Network [closed]

    I am about to install a dedicated VOIP server in our office. It is a 3CX pbx system on Windows 7/8 machine. The environment currently is a Windows SBS 2011 with 8 client machines. I want ...
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133 views

Can't seem to see local network on Wine

I'm trying to use Wine on Ubuntu to use a proprietary Windows program that looks for a proprietary device on the local network. I don't know where it's looking, which protocol, port or IP address it's ...
2
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1answer
224 views

Windows ignores which interface to use in routing table

Hi i'm running windows 7 and i have 2 network cards, one wireless with internet connection and one wired with local lan connection. I want to use both at the same time so i set the lan card to 1st ...
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votes
1answer
45 views

What is the difference between an accelerated LAN port and a regular non-accelerated port? [closed]

Can someone explain the difference for me? Wondering more about the difference for the end user, but a technical description would also be helpful.
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71 views

How do I set up Munin to ping all devices in my LAN and alert me if anything is offline?

So I managed to set up Munin, which was tearful because it was my first encounter with Linux. But it now works and generates colorful little graphs. The real purpose of that exercise, however, was to ...
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1answer
326 views

How to ensure Netgear GS724TP is not blocking Dropbox Lan Sync - port 17500

We're a small company using Drop Box for business but have noticed that Lan Sync refuses to work on our network (it works fine at home). After trouble shooting the issues on the Dropbox forums, it's ...
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1answer
51 views

HDD performance testing over LAN [closed]

Do you know some utility that allow me for HDD performance testing over lan. The issue - I have a shared drive with shared file database. Performance of the database is low and I assume that ...
2
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3answers
2k views

Should I use rsync compression over a gigabit LAN?

I normally use rsync's -z option to enable compression when transferring files over the internet. However, if I am on my own (idle) gigabit LAN, do I still want compression? Or will it be faster ...
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2answers
447 views

Ping another IP on LAN resolves my own IP [closed]

I have no network, computers attached to a router with DHCP enabled. I have two computers, both access the internet just fine... Typing into console ipconfig I get my IP: IPv4 Address. . . . . . . ...
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1answer
35 views

OpenVZ Local Network

I recently aquired 7 OpenVZ Virtual Private Servers for a load balanced website. 2 Load Balancers 3 Web Servers + MySQL API Server + MySQL Storage Server 2 Storage Servers (For PHP Sessions and ...