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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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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Port forwarding doesnt work when connected through LAN (RJ-45)

I have a Zyxel eircom F1000 router. I have set up a port forward on it for a port 80 and pointing to my local server. The port forward works when I use WiFi however when I connect the web server ...
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41 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
48 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
16 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
66 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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85 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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33 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
45 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
27 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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55 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
44 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
84 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
87 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
63 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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122 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
37 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
35 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
107 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 ...
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1answer
47 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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38 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
92 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
730 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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102 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 ...
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1answer
147 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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1answer
42 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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54 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
210 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
42 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 ...
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3answers
777 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
186 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
30 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 ...
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94 views

Access switch on the LAN from a WLAN connection Sonicwall TZ205

I have a setup like the following Modem >>> Sonicwall TZ205 >>>> Linksys 8 port smart POE switch >>>> Linksys LRT224 When I am on the LAN through a wired connection ...
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1answer
40 views

Low Upload Bandwidth Issues

I'm fairly new to the networking world, so please bare with me. On my companies LAN, we are experiencing low upload bandwidth. Download bandwidth is fine. We have a 10 Mbps up and down through our ...
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2k views

pfSense no access from lan to wan

Can anyone please help me ? Probably the answer is already somewhere in the forum, but unfortunately I have not found it until now. Since two days I fight to have access to the internet across a ...
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1answer
274 views

postfix - connection refused from behind NAT

When attempting to telnet postfix from a different host in the same LAN through the FQDN (and thus the LAN's public IP), the following error occurs: root@mailer:/var/log# telnet mail.domain.com 25 ...
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122 views

Lazarus + Postgres Log: Could not receive data from client: unexcpected EOF on client connection

I'm writing an application that runs on a LAN. Workstations: Windows Server: Ubuntu server 12.04 Programming language: Lazarus I can run the program from my XP machine. It connects to the server ...
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1answer
33 views

Varnish to Vsites on Apache servers

Can anyone advise of a VCL conf that redirects (inside LAN & LAN DNS) to get to multiple named hosts? i.e. http://x.ourdomain.com = IP of Varnish Server = redirects to LAN host (i.e. 10.0.5.1) ...
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25 views

Configuring sendmail for local delivery

First, I've probably worded that improperly, because Googling keywords like that has gotten me nowhere. What I want to be able to do is deliver mail to various hosts on a LAN. So let's say I have ...
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1answer
110 views

Dual LAN on one NIC and routing

I'm trying replace three Windows XP workstations with new ones running Windows 7 Pro, on a network which I did not setup and can't change. The old workstations had one NIC each with the following IPv4 ...
2
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0answers
122 views

Debian server - DNS stopped working after static IP reassignment

Due to changes in the LAN router, I had to modify the static IP of one of our servers. It still succeeds in finding the external world (ping google.com), but only temporarily - when I access one of ...
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2answers
69 views

2 lans on the same switch safe? [closed]

I have a modem with 5 ports. Each port gets a static IP address from the web. Basically if i ping one of those static IP addresses from home i am pinging directly one of those ports. On the first ...
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1answer
302 views

Easiest routing solution for a typical firewall with WiFi routers setup - WAN-2-hops-away network

Suppose a local network connected to the internet via a single firewall router. Devices that connect directly (= using only layer 2 devices) to that router are: hosts WiFi routers providing the ...
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3answers
78 views

VLAN subset of LAN? [closed]

I'm reading up on VLAN and came across this "VLAN's allow a network manager to logically segment a LAN into different broadcast domains" If I'm understanding this correctly VLAN is always less than ...
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1answer
255 views

Restrict network connection to virtual machine alone-VMWare

Is there a way to restrict a Ethernet/Wifi Connection to the virtual machine alone and not to the host operating system? I am using VMWare workstation on windows with centOS and Ubuntu as my guest OS ...
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1answer
266 views

“Destination Host Unreachable” and ARP returns no addresses over LAN

I am currently trying to setup LAN over two machines with a network mask of 255.255.255.0 however I am receiving the following message when trying to communicate between them both; [root@alpha ~]# ...
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1answer
468 views

Nginx geoipblocking & allowing LAN IPs

I'd like to block IPs with geoip except whitelisted countries AND the local area network. The first part works flawless, the second one not. Somwehere searching the internet I found the codes LH ...
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1answer
204 views

One IP for whole LAN, provide access to local server outside the LAN [closed]

I have a LAN with multiple PCs and some servers. I would like to provide access to one of the servers from outside the LAN. The problem for me is I have one IP address for the whole LAN. The server is ...
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26 views

Jumphost VM not able to communicate with LAN

I have setup a jumphost VM on WinXP. It has 2 NICs. NIC1, which is the LAN, has the following IP settings: IP: 10.0.0.1 /24 (No default/ DNS configured) NIC2, which has external connections, has ...
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1answer
37 views

Router connect same 2 ports? [closed]

What it will happen if 'accidentally' i will connect 2 ports with the same utp cable? I'm asking here since i don't find anyware such a stupid and silly question but i'm curios about it, the router ...