Questions tagged [local-area-network]

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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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 (192.168....
Zeros-8's user avatar
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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 ...
notanetworkadmin's user avatar
4 votes
1 answer
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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 ...
Marcello's user avatar
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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 IPs: ...
Maxi's user avatar
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3 answers
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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 ...
H_squared's user avatar
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4 votes
2 answers
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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 ...
Socrates's user avatar
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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 ...
cyeostoragrn's user avatar
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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 ...
H_squared's user avatar
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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 router ...
cyeostoragrn's user avatar
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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 ...
BurntSilicon's user avatar
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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 ...
Wuhtzu's user avatar
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4 answers
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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 ...
Tedwin's user avatar
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1 answer
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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 IP)...
woutwoot's user avatar
0 votes
2 answers
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Restrict access to apache tomcat in local network [closed]

I am setting up an apache tomcat webserver for my local network and I want to block any external access from outside of the local network (the internet) for security reasons. Can I configure tomcat ...
Pixelbrei's user avatar
13 votes
2 answers
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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.
Douglas Su's user avatar
1 vote
1 answer
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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 ...
Nqabeni Simela's user avatar
1 vote
1 answer
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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 (...
Roman Toasov's user avatar
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1 answer
2k 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 10.2.0.0/24 ...
WhiteIntel's user avatar
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99 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 ...
DVK's user avatar
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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 ...
dukz's user avatar
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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 can'...
pedrosousa13's user avatar
0 votes
1 answer
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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 ...
Ronan Thibaudau's user avatar
1 vote
3 answers
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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 ...
jssblck's user avatar
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2 answers
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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 ...
sareeshmnair's user avatar
-3 votes
1 answer
86 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 ...
Alex Shroyer's user avatar
0 votes
0 answers
733 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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-2 votes
1 answer
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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" ...
rea's user avatar
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1 vote
0 answers
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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 ...
Jeff Noel's user avatar
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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 ...
Jake's user avatar
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2 votes
1 answer
87 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 ...
Will's user avatar
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1 answer
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"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: 192.168....
Sulliwane's user avatar
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1 answer
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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 ...
Maharshi Raval's user avatar
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0 answers
1k 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 ...
eje211's user avatar
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3 votes
1 answer
872 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 ...
Brill's user avatar
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1 answer
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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.
Kefka's user avatar
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0 answers
322 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 ...
aag's user avatar
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0 votes
1 answer
945 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 ...
CMSCSS's user avatar
  • 113
-1 votes
1 answer
183 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 lan-...
Tigran's user avatar
  • 103
8 votes
5 answers
18k 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 ...
Corey Goldberg's user avatar
-3 votes
2 answers
5k 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. . . . . . . ...
Phill's user avatar
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1 answer
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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 ...
ImThatPedoBear's user avatar
0 votes
1 answer
182 views

Low Upload Bandwidth Issues

On my company's LAN, we are experiencing low upload bandwidth. Download bandwidth is fine. We have a 10 Mbps up and down through our ISP, but the upload has been around 1 Mbps (download around 9.7). ...
Josh_with_questions's user avatar
1 vote
0 answers
9k 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 ...
Marvin Oßwald's user avatar
0 votes
1 answer
2k 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 ...
manchine's user avatar
1 vote
1 answer
67 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) ...
Roger Williams's user avatar
0 votes
1 answer
263 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 ...
odysseas's user avatar
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2 votes
0 answers
505 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 ...
noobeana's user avatar
0 votes
2 answers
219 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 ...
sharkyenergy's user avatar
11 votes
4 answers
12k views

Windows Server 2012 R2 DataCenter The request to list features available on the specified server failed

I am trying to add the Wireless LAN Service to my server but I first had to restart it because it installed some updates a while ago. After the restart it came up with the following error: The ...
Menno van Leeuwen's user avatar
-2 votes
1 answer
5k 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 (i.e. using only layer 2 devices) to that router are: hosts WiFi routers providing the ...
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