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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Multiple static WAN IP addresses to single LAN subnet

Below is my home network topology. I currently have 5 static IP addresses, 3 of which are in use by 3 routers. These routers in-turn subnet internal networks and port forward. I use my SSL VPN ...
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448 views

Computer disappeared from Workgroup

I've a LAN that has 8 computers running Windows XP and only one (Computer A) running Windows Server 2003. When computer A boots, it shows up in all computers' Workgroups, but after 15-30 minutes, it ...
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525 views

DMZ - LAN and Webserver

i know that DMZ should contain servers that acts as a middle point between the trusted area like LAN and the other semi or non trusted area like internet or another DMZ. based on this declaration our ...
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194 views

Network card requires reset

One Vista PC in our small office fails to initialize networking about 1 reboot in 3. Vista's diagnostics are never able to repair the issue. However, the problem can be consistently resolved (until ...
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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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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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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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114 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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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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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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269 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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gpo set to disabled but still applied

I set the 'prohibit access to properties of a LAN connection' to 'disabled.' After forcing, I confirmed they were not applied by running a gpresult. Now I realize that there are instances where ...
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788 views

WLAN card as LAN interface?

I have a system with 2 network adapters: a wifi card (atheros) and an ethernet card. Both network adapters are recognized by pfsense 2.1 without problems, but I don't know how to configure it: I ...
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94 views

SSL Handshake takes 10 seconds in LAN but not in WAN

Here is the structure we have, 3 servers in location A (172.22.25.X) and 3 servers in location B (192.168.140.X). One of the 3 servers in each location creates an SSL connection to the other 4 ...
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203 views

LAN to PPTP VPN bridge

I am pretty new to VPN and networking stuff so please bear with me if this seems a noob question. I have a cisco linksys e2500 router running on Tomato firmware. My situation is, I have set up a PPTP ...
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58 views

Hyper-V Client for Microsoft Networks gone

I have an odd situation. I have a Hyper-V Baremetal Windows 2008 x64 (not R2) host with 4 VM's on it. I also have a server next door on the lan that is not a host just Windows2003x86 called ServerS2 ...
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416 views

DNS Server using bind on CentOS - does not resolve

I am trying to setup a DNS for a standard lan zone. I have now read every bit of info available but still the DNS server does not resolve with nslookup or dig e.g. "nslookup router.local.lan" => ** ...
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2k views

Configure multiple lan interfaces for same subnet on sonicwall

We have a sonicwall 2400, Is there any way to assign multiple interfaces to the same lan subnet? Basically, we would like to have X1 for the wan and X0, X2, X3 and X4 connected to 4 devices that would ...
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994 views

Web server not accessible to other systems on LAN

I'm trying to test a web site being served via nginx on my Mac. Things work just fine accessing the server on that same Mac, but when I try to get to it from a couple of Windows machines on the same ...
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72 views

Pass / forward 8080 port on server with masquerade

There is server machine wich is connected to ISP only with modem, no router. Server got apache on 80port. Now on other ethernet card in my server i have cable going to my router, router serve ...
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208 views

Connecting to NAS boxes/printer located on local private WAN network

The set up Here's a diagram of my network: # Building 1 (Main) --------- | MODEM | --|------ | |-[WIRED] | --|------------------------------------------ | DrayTek Vigor 2130N ...
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187 views

How to implement firewall in LAN(out of users' os) like EC2 have done?

In aws ec2, users can set up security groups which works like a firewall, usually, firewall work behind a gateway/nat server, however, I found that firewall in EC2 works in the LAN, too. For example, ...
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How can I configure my network to allow bi-directional traffic between two lans?

Here's my current setup: (and it may require reworking): 2 LAN networks - 192.168.41.0, 192.168.21.0 2 Public IP's (they are assigned to us by specifying MAC Addresses - not subnetted) ...
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304 views

2 nic cards in ubuntu PC, one to router, one to win7 pc, make connected pc on router talk to win7 on 2nd nic

There are 2 win7 pc, 2 100 mb/s routers and 1 ubuntu 12.04 pc. I scanned a diagram of the Lan setup with IP's ...
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152 views

Cisco sg100-08 connections

I have multiple computers, some have a 10/100 ethernet adapter while others have a 10/100/1000 ones. If I connect them together with the Cisco sg100-08 switch, do I keep the 1Gbit speed where possible ...
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383 views

Connecting to another subnet's machine via ssh

I want to connect to my VPS via ssh. The output of ssh is the following: "No route to host" It seems, that it's because I'm located at a LAN and have no public IP. So, my question is, how can I ...
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51 views

Comunication from Server to Client + Client LAN

I'm having some trouble with some network setup. I've tried OpenVPN, SocialVPN, Hamachi, still it is not working. This is my setup: Server A: NIC 1 with internet public address, NIC 2 to LAN Client B ...
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115 views

Redirect users to internal webpage on first visit

I have a lan of maybe 20 - 30 computers, and a Windows server 2003 server on hand (I can also run any x86 Linux distro). What I am trying to do, is to redirect users to a webserver inside the LAN the ...
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429 views

postgres server works on LAN but not WAN (connection refused)

I'm trying to set up a postgres server, but I cannot access it through the Internet. It works fine on my LAN. Server is just a desktop computer using Ubuntu 12.04 desktop. disclaimer: I am not ...
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4k views

(Zywall USG 300) NAT bypassed when accessing in-house-server From LAN Via domain name

My situations is like this; i host a number of websites from within our joint network solution. On the network is basically 3 categories: the known public, registered via mac, given static dhcp ...
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560 views

Gateway Modem loses ability to DNS lookup intermittently, often under heavy load

We're using a Bell 2Wire Gateway modem/router as our only hub (with some switches attached). Intermittently, but frequently when a large download is initiated, all computers on our LAN lose the ...
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85 views

Accessing database from local network

I would like to access database running on virtual machine which resides in server connected to local network. Here's the whole situation: There is Windows Server 2008 R2 Datacenter running as ...
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267 views

how to access my lan based postgresql db from my website

We have lan based .Net application with Postgresql 8.1 , now i have task to provide interface on website to read and write two tables on LAN based database I don't know where to start Please help me ...
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Performance issues on LAN with Load balancing

I recently set up a network which is running "slow" and I can't seem to debug the situation. I'm fairly noobie at networks I'll explain the setup and hopefully you can give me possible solutions. I ...
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289 views

windows server 2003 subdomain routing to lan

I have Windows Server 2003 with two network cards. 1 network card is connected to the router and router is connected to internet. 2nd cards is connected to switch and there are another 5 PC’s ...
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Slow LAN transfer from 3rd party computer

I've got an odd problem that I'm not really sure where to start the troubleshooting process. I have a 'server' with Windows Server 2008R2 (64-bit) installed and it has a couple of hard drives. If I ...
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235 views

Auto switching between wired and wireless connections

How about this situation. Our business deals a lot with medical information. And some of our clients have demands based off HIPPA, etc. There is one now where they do not want an employee to have both ...
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231 views

PC to MAC Ethernet LAN

I'm trying to setup VNC between a (Windows XP) PC and a MAC (OS X) for semi-permanent installation in a space, but I can't even get the PC to ping the mac. I've got an ethernet cable running between ...
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630 views

How to track down connectivity drops

My company just changed it's old firewall (Zyxel ZyWALL 70) with a new one (Zyxel ZyWALL USG 300). Everything seems to be working fine but sometimes, in a non-periodic span of time, connectivity ...
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1k views

Error loading interface lanplus (ipmitool on CentOS)

I'm having trouble specifying the lanplus interface for the ipmitool program. I issue a command such as ipmitool -I lanplus -U USER -P PASSWORD -H 10.16.0.253 sol activate and I am given the ...
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937 views

How to connect 2 Physical Networks with 2 Separate WAN together

My customer has two small companies in two separate buildings that have merged. The buildings are 30ft apart, so they ran an outdoor, buried CAT6 cable between them. They want to use the main ...
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Validity of my basic Performance Testing Results on a LAN

Networking is not my main job and i am hoping you guys can comment on my test procedure so far to identify PCs best to host a few voip softphones. Our 100Mb LAN comprises of 40 Win XP/2000 PCs and a ...
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why we need VLAN in any network?

What is the use of VLAN in networking.Can any one point out a scenario where VLAN is useful
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785 views

Can't Ping host, nmap detects it?

I have a simple question that I'm trying to wrap my head around. I know this requires knowledge of my internal network, but at a glance, what do you guys think.. I cannot ping a host in my network ...
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87 views

is there a local DNS Software which uses external DNS for actual resolution?

I have a LAN with few PCs on it. I want to have them to use a local server for DNS look up, and let the local server do look up with external (actual) DNS. So, which proxy-DNS server do you suggest ...
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199 views

How to detect weak points in my lan

I am starting to "polish" the LAN here at my new work and since it's the 1st time I face sommething that big (almost 300 clients a switches, proxy) I would like to understand easily where I get weak ...
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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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What do I request from the LAN upgrade contractor to avoid simple oversights? [closed]

The company for which I work have allowed me to hire a LAN wiring contractor to completely overhaul the building LAN. Currently there are old 10MBit Ethernet cables and switches running and I ...
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HOWTO: Ring Ethernet Lan, My drawing Correct?

I have a special demand that to improve the redundancy of a network. (any of the cable between switches broken will NOT disconnect any clients) S = a switch C = a computer - = CAT5 cable ...
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269 views

Windows LAN IP addresses

How can I find all the active IP addresses on my LAN and their host names?