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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Why the discrepancy between devolo cockpit and iperf [on hold]

I have set up a Devolo dlan 1200+ network in my home. According to the devolo Cockpit software my bandwidth is displayed at > 200 Mbit/sec. However when I do an iperf test between two computers on the ...
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15 views

Smaller subnet mask to “merge” VPN-connected LANs?

I have two LANs connected to different internet connections (in different cities, in fact): ISP1 -> LAN 1: 192.168.10.0/24 ISP2 -> LAN 2: 192.168.11.0/24 On each LAN is a router. Both routers ...
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1answer
36 views

Capture traffic to/from a network node

I would like to capture all traffic to/from a network node. I don't know much about the network setup there, here's what I know: The target node is a Linux server, which has no access to internet, ...
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1answer
51 views

Network maps, best admin practises and how them saved your ass?

I am reviewing the security of a (quite large) network. There are a some thousands switches, several hundred routers, several hundred access points, tenths of FW, IPS, and so on. PCs and servers are ...
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2answers
83 views

Can't resolve hostname by ip address over nslookup [closed]

I've got an Ubuntu Server on my LAN. I can fully use it (samba, ssh, apache2, xmpp...) by using it's ip address. But I want to use the hostname to connect (e.g. ssh). When I do a nslookup with the ip ...
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1answer
39 views

How to get my router MAN IP address (assigned by ISP via DHCP) [closed]

My router has a MAN IP address which is assigned via DHCP by my ISP. This is different from my lan/wan IP addresses of course. In my router settings page I can read it: 10.245.134.71, and MAN gateway ...
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1answer
61 views

extremly slow lan speed between the working station and the server [closed]

when you are transfer a file to our server it takes realy long time but when you are on the server and transfer a file from a drive to another it just do it immediately i had tried a ping test and ...
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0answers
31 views

dnsmasq use LAN ip for resolvable LAN hosts, forward to external DNS otherwise?

This may be a duplicate but I was unable to find the exact answer, so I apologize in advance if it is. I have a dnsmasq instance running on my router, as well as some hosts which are accessible on ...
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2answers
37 views

Local network for websites

I'm a student doing an internship at the moment. I mainly develop websites using virtualbox and vagrant. I was wondering if i could like make the websites i build accessible for everyone in my ...
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2answers
70 views

Win 2012 server will not resolve domains using web browser, PING or NSLOOKUP, yet services on server are working

This is a windows 2012 server running SQL 2014. The server does not seem to be able to resolve IP address when given a domain name. The problem first showed itself when I tried to go to a web page ...
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1answer
37 views

How to Connect a Core Switch with an Edge/Client Switch using SFP+ Ports

I am not sure if this is the correct site to post this question and I am more a software type of guy that needs to get started with Networking, so please bear with me if this sounds stupid... Having ...
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1answer
48 views

Route LAN traffic and Internet Windows Server 2012 R2

I have a Windows Server 2012 R2 (AD, DNS, DHCP, IIS). MY internet connection is 10 0Mbps Up, 10 Mbps Down. Whenever I transfer files between computers in my local network it transfers via internet at ...
2
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1answer
60 views

Server 2012 R2 - Features on Demand - role not actually being removed

This is for learning purposes: I'm running a Server r2 machine and I'm trying to remove feature WINS. I run uninstall-windowsfeature WINS -restart -remove, I then restart, and then run ...
1
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1answer
36 views

Cannot access website but others can

My problem is that, I have just set up a server on my internal LAN and now it is in a datacenter. Everyone else can access the server and use it as normal. I however, cannot. When I ping the domain ...
0
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1answer
33 views

Connecting 3 server blades to the internet and a non-internet connected LAN simultaneously

I just got a new position where my primary function is software development. As some side work they have me doing a little networking and a little administration. The latter I have some experience ...
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0answers
35 views

When a computer wants to send a IP packet to another computer in the same network, how does it know the destinamion MAC address of that host? [closed]

So I know that switches are better than hubs because they can forward an Ethernet frame exactly to the host that has that specific destination MAC address. However, when two computers communicate, ...
2
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2answers
812 views

How to make lxd containers accessible to the LAN

If I use Virtualbox to spin up a VM, I can select "bridged" as the network adapter type and this results in the guest/virtual NIC being connected to my physical LAN and hence getting a LAN IP from my ...
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1answer
43 views

Can't discover a IPv4 link-local address when having an static IP configured

I have link-local addresses working out-of-the-box when coupled with DHCP, since when there's no DHCP, the device doesn't get an IP, only a link-local one. Still, I need to have link-local addresses ...
3
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0answers
73 views

Group Policy Application on Boot with MSTP & really really fast computers

The latest generation HP computers with solid state drives and Win 10 are booting so fast that Multiple Spanning Tree Protocol is not allowing network access in time for Group Policy to process on ...
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1answer
92 views

How to get hostname for ip on a local network? [closed]

Disclaimer: not a sys admin/network expert so please bare with me. I'm trying to get the hostname for a given ip of a computer in a local network. The current test setup I have is a few single board ...
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2answers
32 views

IPv4 assigment strategy in LAN: based on location vs. based on uniqueness of device

In our small office for many years I use IPv4 address assignment scheme based on location of user device, like: room #1: ip-range #1 room #2: ip-range #3 room #N: ip-range #N For me it has an ...
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1answer
36 views

D-LINK DSR-250N lan issues

I'm having problem with my DSR-250N router. I set-up local network with 10 computers. Some of them are connected through wire and some use wireless. The problem is, sometimes one computer cannot ...
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2answers
50 views

Apache can't change listening IP-address

I can't get Apache to listen on a specific IP address. It's a local web server, not public. I'm on CentOS 5.11 using Apache 2.2. The default configuration httpd.conf works great but only listens to ...
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1answer
28 views

DNS requests from a local server to another local server

I have two servers running in one network. External IP of main server: 1.2.3.4 (domain.com) External IP of secondary server: should not be available directly from outside Main server (dns, mx, ...
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2answers
61 views

How to know the external ip address of my gateway?

In my office network i unknowingly changed a setting of my gateway of lan network .. I had set my phone's ip address under a section in setting which states that.. Only this ip can login to the ...
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1answer
56 views

How to send lan traffic to bypass the vpn for android

How to send lan traffic to bypass the vpn, for that network 192.168.3.0/24 directly appealed to the wifi router, and do not through the VPN
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1answer
42 views

Static routing between LAN, IPSec and VPN

I got the following network setup: LAN: 10.10.2.0/24 -> IPSec -> 10.10.1.0/24 (VPN Server addr: 10.10.1.5/24) VPN: 10.10.3.0/24 IPSec connection is transparent Users between 10.10.1.0/24 and ...
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1answer
52 views

Direct server to server traffic via LAN

This may seem like a dumb question... or it may well be a dumb question (lol)... but its something I have never had to deal with and know little about. I have 15 physical servers in a datacenter, ...
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2answers
47 views

Two different locations running as one on server? [closed]

I am with a new company, and I am trying to make sure I am understanding the way it is set up on the server. There are 2 locations, and the second location is connected to the network and Server ...
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0answers
121 views

Change Windows 2012 R2 Network from Public to Domain

I upgraded the Network Card Drivers for my Domain Controller but now it is seeing the local lan as a PUBLIC network which is messing with my firewall rules. How do I switch it back to DOMAIN?
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1answer
128 views

adfs proxy and dmz configuration

I am trying to setup an ADFS proxy in a DMZ as per Microsoft's best practices, but do not really understand how this is done practically. The basic premise is that a server is placed in the DMZ and ...
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0answers
81 views

IP address change eventlog in Windows System

Domain Controller - Windows Server 2008 R2 Standard Client OS - Windows 7 prof. Recently on one of my Windows Server 2008 R2, the ip address has been changed. So i need to know how it has been ...
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0answers
75 views

SoftEther Site-to-Site VPN

I have already already setup a Site-to-Site connection via the SoftEther bridge package. (Please see attached diagram). I enabled SecureNAT on the central server, and to avoid conflict with my local ...
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0answers
11 views

PC name won't appear as it changed

I have a LAN at work. I have renamed all PCs. I mean I have changed all computer names. And when I am scanning the network with netscan, some PCs appear with old names. In Windows Network ...
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0answers
28 views

Cannot connect to LAN when VPN connection is active

I have a headless server (skynet) which I would like to connect to a OpenVPN server running on a VPS I've purchased. The VPN is up and running and when I test to it with my laptop, I have internet ...
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1answer
61 views

IPv4 SYN, ACK & RST issues

Good day, I asked this question in the Network Engineers StackExchange and was told to ask it here. I am running a roundup server (Ubuntu 12.04) and the roundup-mailgw (python script) is no longer ...
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2answers
25 views

Windows 2008 R2 Standard Edition random packet drop

My dedicated game server running Windows 2008 R2 Standard Edition drops packages randomly and this is causing a freeze for about 1 second for my players. I have no idea whats causing this. I've been ...
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2answers
150 views

How to give a computer a domain name on LAN? [closed]

I have made a web based software which runs on apache on one of the computers on the office LAN. To make it easier for people, I want to use a domain name to access the "server" instead of it's IP ...
0
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0answers
53 views

Server 2008 R2 and RRAS

Good Day, Hope someone can help. I am currently working for a private educational institute building and managing a network. I have had to fix quite a bit of this network to get everything to where ...
0
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1answer
87 views

Setting up network connectivity between 2 VirtualBox Windows VMs

I am attempting to set up a set of VMs on Virtualbox and have configured one as a DC running Windows Server 2008 R2, and it's intended to function as a primary DNS server. I have created a reverse ...
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3answers
312 views

Possible to route HTTP traffic through another server?

Noob question. I have three remote servers (S1, S2 & S3). One of them has internet connectivity (S1) and the other two (S2 & S3) can only access S1 -- for example, I have passwordless SSH set ...
0
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1answer
204 views

Pfsense Access LAN through WAN (ping, shared folders etc)

My network setup is like this {Internet} <-> (Goverment Router) <-> (pfSense with http and https interception)<->(LAN Switch) <-> Many pcs on the LAN On the goverment router there are ...
0
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1answer
68 views

CentOS 5.4 (Final) - Can not bring up eth0

I have CentOS 5.4 installed on my machine. Due to some reason I can not bring up wired connection. When I try to configure ip address through DHCP it fails and give the error "no link present. Check ...
0
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0answers
107 views

ASUS RT-AC66U WiFi Unit is blocking LAN DNS/DHCP Server

I'm using an ASUS RT-AC66U for WiFi. Decided to break out an old server to handle DNS/DHCP for local experiments. The problem seems to be that the RT-AC66U is (somehow) blocking the DNS Server. ...
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1answer
35 views

Windows 7 mapped drive - red X (one user out of 4)

This is for a client of mine. Small Windows 2008 domain. Four workstations, all Windows 7 Pro, all the same service pack and windows updates. Same AV software, no GPOs, all computers are pretty ...
2
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2answers
83 views

Win7 apache2.4.9 phpmyadmin4.5.0.2 - an not connect for LAN [closed]

Everything is working fine - hosting a couple of my own sites, but would like to be able to maintain them from other PC's on the LAN. Works fine, except for phpmyadmin. Everything is set up to be ...
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2answers
30 views

Scan LAN ports for devices other than computers

I have a fingerprint device attached to a LAN and I want to figure out the port number used. I could not figure out from its settings and configuration, so I thought to do a port scan over the ...
2
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1answer
277 views

Setting up IPSEC on LAN between two hosts (OpenBSD)

Trying to use IPSEC between two hosts on a LAN. No VPN involved Using OpenBSD 5.8 (in VirtualBox). I'd prefer to use OpenBSD's built-in support for IPSEC and not a third-party. Two hosts: 10.0.2.10 ...
2
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1answer
102 views

Interpreting PING Results

I am on Windows and LAN using the command line PING in this format: ping -a -n 5 -S <source ip> <destination ip> For the most part, it does what it is supposed to do but I have noticed 3 ...
2
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1answer
61 views

Caching POST request and GET request on a local machine to get access to content offline

I'm looking for an existing solution that would allow us to make request normally and let a sort of proxy cache everything we do. For instance when querying a REST service the proxy would write the ...