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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Lightning/surge risk of Ethernet cable run inside an exterior wall [on hold]

In a previous question, I had planned a Cat6 (Ethernet) cable run outside a home, adjacent to a coax run. I was advised against it, and I'm interested in taking that advice. Now I'm considering ...
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1answer
26 views

Binding local network machines to global doman names via dnsmasq. Possible?

In my current setup, I've got a Thomson TWG870UG modem-router(internal DHCP server disabled) with a couple of home network machines connected to it via both ethernet and wlan. One of these machines ...
0
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0answers
11 views

Local web application as a captive portal with out authentication?

We are in the final stages of developing an in-browser mobile app which will run in a non Internet-connected environment (on a submarine). We are running a server inside the submarine (Windows 8 ...
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1answer
21 views

Public Wi-Fi with Individual Authentication and Time limit for Internet Access [on hold]

I would like to change the way that my costumers access to the internet. I would like to enable two ways for sharing my internet: With my wireless network as public, I would like to give a username ...
0
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0answers
29 views

Windows 7 Network Adapter Periodically Shows Disconnected

Description: My company is currently working on a project that utilizes 2 servers, and 1 client, running on an isolated network. Periodically, one or both of the servers will lose network ...
2
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1answer
69 views

Surge protection for outdoor network cable run

I'm going to have a network cable run between floors of a home, and most of the run will be outdoors, up the side of the building. I ordered a spool of shielded UV-rated waterproof Cat6 cable. From ...
1
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4answers
88 views

How to access a machine with a wrong network address?

I have a Windows Active Directory network in a LAN of addresses 192.168.10.0/24. I have another site that has addresses of 192.168.11.0/24, where all AD servers are in the 192.168.10.0/24 site (I ...
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0answers
11 views

IPv6 dead before receiving ICMPv6 ping

TCPv6 and UPDv6 are dead until server received ICMPv6 ping. Further analysis shows that actually TCP and UDP packets won't even come to the server. But after receiving ICMPv6 ping, everything starts ...
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1answer
18 views

Local Server Website Doesn't respond as soon as lose Internet Connectivity

I have hosted a local website in my organisation where student are accessing the local website locally from IIS server windows 2012 r2 Server,and we have 24 x 7 internet connectivity where the same ...
0
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1answer
37 views

Only second ping succeeds - maybe arp?

i tried to set up a local network without any routers etc. Components are one notebook (Win7), a compact embedded 2013 board with two lan interfaces and a pc(Win 7) with also two lan interfaces. The ...
1
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2answers
61 views

Where should the preferred DNS server be in a LAN?

I had a hard time formulating this question’s title, but I think I’ve stated it correctly. My question may stem from a misunderstanding, so I will explain what happened to cause me to think I might ...
0
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0answers
20 views

Cisco 2621XM Configuration with Comcast Business Modem

I have a Cisco 2620xm router that I have ran into trouble getting it to connect to a comcast modem/gateway for internet service. The router and modem used by Comcast is a DPC3... The interfaces on the ...
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0answers
35 views

How can I create routes between two separate LANs

I have a ASUS RT-AC66U with merlin firmware, how can i create a connection between 2 different subnets, whitout using Vlan's ? My Server subnet is 10.10.1.0 255.0.0.0.0 Asus router and client ...
0
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1answer
47 views

dns bind not working nslookup gives servfail

I am connected to a reliance wifi connection obtained a 192.168.0.101 ip. 192.168.0.1 as primary dns. I configured dns bind to give name to my server process. To test that locally i changed the ...
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0answers
20 views

Fallback to backup server upon failure of main server without third machine

I will soon need to setup a database server on a budget. We are planning to use Postgres on Ubuntu (most likely) and we'd like to have a backup server. For replication, I think I'll just use ...
1
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1answer
26 views

CISCO SSL VPN (multiple Sites) [closed]

I'm having a small issues and I'm sure it's NAT related. Our Users connect to SSL VPN in Ft. Worth. We also have a site up in Dallas. There is a current Site to Site connection there with full ...
2
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1answer
172 views

IPv6: No NAT / Local Addressing + ISP Offline

I've been reading some articles about IPv6 and I'm currently playing with some addresses on a VPS. Recently I was thinking on a typical home/office IPv4 network. We're used to have a local DHCP ...
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1answer
81 views

Network printers randomly print blank documents

We have two printers connected straight through Ethernet without a print server, one is a Samsung M2875FD, and the other one a Dell 1320c. Since we installed the Samsung printer, everybody noticed ...
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1answer
56 views

lan to wan connection refused by windows firewall

I have plenty of experience with LAN's and bridges however this is my first time using a WAN style setup... here is a diagram of my network WAN (public ip & 10.1.10.1)---COMP1 (10.1.10.2) ...
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0answers
58 views

Configure WiFi and LAN network to use the same Kerio DHCP server

We have a local network in the company: An Ubuntu server hosted for VPS. Kerio Control Appliance 8.5 installed on VPS as internet & DHCP server . WiFi modem connected to eth0 of Kerio. eth1 of ...
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2answers
57 views

Can I connect many switches to a switch? [closed]

I am trying to make a campus network.I haven't any experience. In campus,there are center building and many buildings.I use many switches(for pc,phone,sec-cameras) in a building.And I want to connect ...
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1answer
95 views

Accessing a samba share from a separate LAN [closed]

I have 2 LANs at home : A main LAN running behind my ISP's modem (acting as a router with an IP address of 192.168.0.1, which I'll refer to as router A). Attached to this router is a Raspberry Pi at ...
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1answer
23 views

cisco asa 5512-x policing

I have a single 100mb leased line that will be shared by three unrelated companies. We are looking to buy a cisco ASA 5512-X and I need to use policing to ensure that each company receives 1/3 of ...
0
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1answer
27 views

Accessing Local Web server on my LAN error

I have looked at the other questions related to this on SO, Googled and looked in my Window Logs. I have a local web site on a PC that is DHCP assigned. It is a MVC web site using IIS Manager. On ...
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0answers
69 views

CISCO 2960X Access Switch Issue Random Limited Connectivity Issue

I have a CISCO 2960X Access switch which is configured in 8 Stack. IOS Version 15.0.2EX4 Software Image: C2960X-UniversalK9-M The System is connected VIA the CISCO IP Phone (7942G)and and then ...
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0answers
40 views

SQL Server Connection Issue with New Router But Works With Old Router

I have an issue that really has me stumped. I have a router that is overheating and needs to be upgraded. When I connect the new router and configure it with the same DHCP settings and IP ranges as ...
0
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1answer
155 views

Captive portal popups: the definitive guide

I'm manually implementing a WiFi captive portal. I've got everything pretty much working BUT a single hitch: i want everyone to see their mobile OSs' (or computer OSs') captive portal popup for a ...
0
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1answer
144 views

How to use two different ISP on same LAN with one Ethernet switch?

Sorry if same question is asked on Stackoverflow. I searched and tried some configuration but are not working in my case. I have a LAN with 6 machines which are on same network (each other can be ...
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2answers
44 views

Is there a way to control Internet usage on LAN? [closed]

I have a network with many client PCs. I have to block Internet access for some of the users and allow it for others. Is there a way that can control Internet access, or filter and allow based on MAC ...
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1answer
110 views

Cannot connect to the Internet, Limited Access(Ethernet), Windows Server 2012

I am using a Windows Server 2012 for my institute, due to connectivity issues I uninstalled the services AD DS, DHCP, DNS. But after the uninstall the server is unable to connect to the Internet, ...
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0answers
13 views

Network Vicinity View doesn't show agent managed PCs

Network Vicinity View in my SCOM only shows other network devices+management server, but does not show any agent managed computers, why is that? Or is it supposed to be like that and i'm missing ...
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0answers
24 views

Cannot reach another station in wireless LAN

I have two stations (A and B) connected to the same wireless LAN by a wireless router (R). These stations and the router are placed in a crowded location and sometimes they fail to communicate (e.g. I ...
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0answers
84 views

Make lan ip's available to external devices over openvpn [closed]

My goal is to make my home media library available to external devices. External device ====== OpenVPN Server ====== unknown Modem ----- OpenWRT --- lan machines External devices are OpenVPN ...
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1answer
47 views

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
65 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
30 views

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

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 ...
0
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1answer
244 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
50 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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3answers
49 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 ...
3
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2answers
48 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
55 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
68 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 ...
0
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1answer
79 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 ...
0
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1answer
56 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 ...
0
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0answers
34 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 ...
1
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3answers
634 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 ...
0
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0answers
100 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 ...
0
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4answers
105 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 ...
0
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1answer
56 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 ...
0
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0answers
57 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 ...