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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Cannot ping over LAN until a ping is received

I have two OSX machines on a local subnet. Pings from Machine A to Machine B consistently timeout until Machine B pings Machine A. After B pings A, A can successfully ping B, but this success is ...
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2answers
90 views

Use NGINX to present local HTTP server?

I have a CCTV server running on a local IP address. When our staff want to login remotely they first need to connect via VPN to gain access. I would like to allow access without the need for a VPN but ...
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0answers
93 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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4answers
5k views

Linux router: ping doesn't route back

I have a Debian box which I'm trying to set up as a router and an Ubuntu box which I'm using as a client. My problem is that when the Ubuntu client tries to ping a server on the Internet, all the ...
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1answer
2k views

2 router network setup. Why does ping only work in one direction?

So the setup looks like this: There is a main WLAN-router/modem which is connected to the internet and serves the lower floor with WLAN. Now upstairs I have a second WLAN-router/modem (I will call it ...
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0answers
202 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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1answer
223 views

How do I transform a LAN subnet to another? (VPN)

I've set up a VPN with a LAN behind it. VPN : 10.2.1.X LAN : 192.168.1.X When I connect from outside where the router via DHCP assigns me a similar IP to my "original LAN" (192.168.1.X) everything ...
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1answer
644 views

Remote Access Problems with DRAC 5 on Dell PowerEdge 1950

Today I received my first Dell PowerEdge 1950 server with a DRAC 5 card. On my local network I have static configurations on my Linux systems using this for instance: iface eth0 inet static ...
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2answers
553 views

Assigning static IP and domain name mapping to local server in LAN

I have developed a web application which will be deployed in a LAN environemnt. Clients will be Computers/Android Tablets/IPAD In order for communication between client and local server 1) need to ...
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votes
2answers
116 views

Which way should we choose to shorten backup time?

A company performs a full backup for its data in a daily basis for disaster recovery purposes. However, their backup process cannot be completed within the assigned backup time window. What would ...
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votes
1answer
27 views

Domains in local network for websites [closed]

I have installed XAMMP on my local win. server, how can i setup for every website a local domain like. "web1.lan, web2.lan, web3.local"? I already use static IP Adresses in my network...
3
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3answers
5k views

Access ports versus trunk ports?

Can someone please explain the difference between access ports and trunk ports on a switch? I'm starting to learn networking, and my understanding is that access ports are used to connect endpoints ...
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1answer
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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0answers
413 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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votes
3answers
106 views

“Mail server” on small LAN network [closed]

What is the best way to go about the following issue? There are about 7 machines under Win XP Pro, each has its own email client (Outlook 2007) with own accounts (eg. gmail, yahoo etc.) I want to ...
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votes
1answer
123 views

I need a 5th port on a 4-port modem [closed]

I'm managing a big building, with a lot of services/vendors and I have a DMZ'd 4-port cable modem, Model: SMC8014, that has 4 separate networks branching off each of its 4 ports. Each network has its ...
0
votes
1answer
213 views

Can't ping6 a network interface from a different Ubuntu computer

I cannot ping6 the network interface "tun0" on the host computer from a virtual machine. Using vmware, I installed a Ubuntu 12.04 virtual machine, that is connected to the host machine with NAT. ...
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1answer
85 views

How to bridge two lan but keeping their clients using/choosing their own wan?

this is my first question here so please bear with me if I haven't made it super clear So I have 2 piece of Cisco RV180W router hardware. The office is moderately big and one single Wifi router is ...
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1answer
108 views

Requiring all network traffic go through VPN in Windows 7

I have a VPN service that I can can connect to through Network and Sharing Center manually and this works great, but sometimes I forget to enable it or it goes down and then my traffic is not tunneled ...
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1answer
77 views

Private ip iptables rule

I am using Windows Azure where they allocate a private IP for you like 10.3.2.1. If I have another machine at 10.3.2.2, how can I open up the first machine(say port 3306) to let the second machine to ...
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votes
1answer
60 views

can netgear RP614 be configured to enable promisc listening? [closed]

can I confugure NetGear RP614 to be able to receive all packets (packets from and to all machines on my LAN) and inspect them in Wireshark? I enabled promisc on eth0 and in Wireshark but still can ...
2
votes
1answer
247 views

How to split LAN into two separate LANs using same internet connection

I have a router ZyXEL P-660HN-T3A and Switch ZyXEL GS1100-24 and I need to separate 2 ports on switch so clients connected to this ports can't see/access the others. I need the same thing to do with ...
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vote
1answer
482 views

TCP/IP routing: accessing a LAN device with wrong static IP configuration

I forgot to change the static IP of a network device before moving it from my datacenter network to my home LAN. Since it isn't configured properly for my LAN network, I'm not sure how to access it. ...
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0answers
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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vote
1answer
90 views

VLAN over three switches

We are connecting three offices via fiber optics. For each office we have one switch. In each office there will be one PC which has to be isolated in a VLAN A. There will be other PCs but those three ...
0
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1answer
73 views

Wake on Lan (WOL) stopped working

My wake on lan stopped working for no apaprent reason. I installed wireshark and from another machine sent a magic packet to the target computer and I could see the packet was coming through. ...
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2answers
933 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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votes
3answers
386 views

External hard drive connected to lan [closed]

Is there a way to connect an external driver to my lan network (direct connection, without having any PC opened) and then access it from any device from lan? Like a network drive? If its not ...
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votes
1answer
65 views

How to add access to a host via symbolic name?

From one LAN I have access to the host 10.0.0.*** via symbolic name say a007, which was added to my /etc/hosts as: 10.0.0.*/*/* a007 But now I need to use this host as a007 from another LAN and I ...
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3answers
93 views

Create a /16 (255.255.0.0) local network

My bare knuckles networking understanding led me to believe that if I set an IP address of, for example, 10.0.2.25 with netmask 255.255.0.0 on a machine, it should see all hosts in the subnet ...
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votes
1answer
164 views

Broke my company's network, how do I get it set back up? [closed]

My dad moved his office. The new location will only have WiFi access, but he still needs his server setup and the other machines connected to it. The server (don't laugh) is an old Windows NT 4.0. ...
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1answer
207 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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1answer
247 views

how to connect two different lans [closed]

I have in my office two different LANS with two different ISP. Lan A is faster than Lan B. We want to share files and printers and everything as if it was only one LAN, the thing is that we don't ...
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votes
1answer
1k views

no more address or address previously allocated by another server tftpd32

I am getting error Client requested address 0.0.0.70 [27/08 08:47:17.406] no more address or address previously allocated by another server [27/08 08:47:17.406] Rcvd DHCP inform Msg for IP ...
0
votes
1answer
137 views

Is Cisco Misquoting the Nexus 7000 specs [closed]

Looking at the following image: http://blogs.cisco.com/wp-content/uploads/7000-family-550x358.png Cisco is quoting the 7009 as having a 10GigE density of 336 and a backplane bandwidth of 550G/slot. ...
2
votes
1answer
339 views

Is a Fabric Module required for a Nexus 7009, or is it part of the Chassis?

I noticed that Cisco lists separate fabric modules for the Nexus 7009 switch. If I were to simply buy the Nexus 7009 Chassis (N7K-7009), what would I need at minimum? I just want to confirm, but I ...
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5answers
3k views

QoS for very basic LAN/WiFi network: Do I need SmoothWall or OpenWRT or just good advice?

Here is the basic situation/topology of the network I manage: Residential, but we are a co-op, so we have a business-class contract with ISP. The residents are college students, so there is quite ...
0
votes
1answer
152 views

Multiple WAN to single LAN

I have a block of static external IPs and I'm trying to route them to a single internal server. We have a Sonicwall TZ-210; trying to set this up results in no outbound traffic and an error warning ...
2
votes
1answer
62 views

May a low DRAM router be a bottleneck for a LAN?

I need to install a LAN that is a hybrid between a star LAN and a cascade LAN. There are two levels (I mean that the maximum number of link to go from the central switch to the most external switch is ...
2
votes
1answer
137 views

How to bind stackable switches

Let's say that I have a non modular switch, and that in future I might need to expand my LAN, connecting it to more switches. If I take stackable switches, physically how do I bind them? May I take a ...
0
votes
1answer
78 views

Adding some content to html response

I would like to know is it possible to achieve with (my guess is) a proxy server to add some content to users response? Let's say I would like to add a div to each html document which is being ...
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vote
2answers
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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4answers
131 views

LAN Load Balancing Router

Everything I find is for WAN load balancing. Our customer wants to have a setup where two servers are connected to the same router. To the outside network devices connected to the router, they think ...
0
votes
3answers
65 views

How to find to which network i'm actually connected [closed]

In our office we have both LAN and Wi-Fi network. say i have now connected to both LAN and WiFi. now when i give ipconfig. It is showing both LAN IP and also WiFi IP. I want to know, to which network ...
0
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1answer
60 views

Easy management of multiple connections

on a Windows 7 machine I need to switch back and forth two connections: the LAN connection (that works behind a proxy) and a wireless connection via a USB modem. This requires every time to activate / ...
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0answers
161 views

Clients suddenly stop receiving data from the network

I'm facing a connection problem on a small network: 10 clients connected to a Netgear WNR612v2 WiFi router with DHCP disabled; 4 clients connected to a Linksys WRT160NL router with DHCP active and ...
0
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4answers
154 views

local SSH works when using “localhost”, but not using IP address

I'm having difficulty setting up ssh for a laptop on my LAN. I think I have done all the obvious things. On the server: ps -A | grep sshd 18278 ? 00:00:00 sshd and ss -lnp shows sshd ...
8
votes
3answers
643 views

Migrate raw disk image over LAN

Here is my situation: Two dedicated servers in the same datacenter with gigabit ethernet between them. Both dedicated servers booted into a rescue environment based on Debian Squeeze with extra ...
0
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2answers
985 views

how can I block all traffic that is coming to and from an IP address using iptables

I am trying to block all traffic that is both coming and going to an internal IP address (this server acts as a router for the network). so far I have tried the following: iptables -A INPUT -s ...
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2answers
101 views

OpenVPN as a service, client physically connected to network

I've got OpenVPN running as a service on a client's computer, however oftentimes he will be in the office and able to physically connect to the network. The issue I have with this, is that even when ...