A router is a device that forwards data packets across multiple networks. Questions tagged with router can cover router hardware, software, and network configuration.

learn more… | top users | synonyms (1)

124
votes
1answer
225k views

What is port forwarding and what is it used for?

There are a lot of questions on 'port forwarding' but there doesn't seem to be one that clearly states what it is and what it's used for. So: What is Port Forwarding? What is it used for, and why ...
42
votes
2answers
16k views

What's the maximum actual bit rate of an 802.11g connection?

Using a wired connection, I get a 38 Mbit/s download speed. When I switch to wireless one (Linksys WRT54GL router with Tomato firmware), the speed drops to 23 Mbit/s even if the distance between the ...
27
votes
6answers
85k views

Why does just splitting an Ethernet cable not work?

I thought the Ethernet is logically a one-line communication bus (for argument's sake, I am excluding hubs). All machines attached on the bus hears the same signals and the machines themselves try to ...
20
votes
7answers
10k views

How to extend Wi-Fi signal across rooms?

I moved into a new place and my old Wi-Fi router just doesn't have the range to get into all the rooms. I've been investigating a lot of options and I'm wondering what other folks have done here. ...
23
votes
4answers
22k views

DD-WRT: How to allow port forwarding to apply to requests originating from inside the LAN?

With the original firmware of my router I had port forwarding defined from port 80 to the server in the LAN, which I used in conjunction with an external dynamic DNS service. I've now upgraded to DD-...
10
votes
3answers
33k views

How can I speed up data transfer between local computers on a WiFi network?

I have a router with ADSL Pentagram Cerberus 6331-42. Is it normal to have transfer speeds between two computers of max 1MB/s (not 1 Mbit)? How can I set my router up to make it faster at transferring ...
7
votes
4answers
1k views

What's the best way to increase the range of my 802.11g router?

I have cable broadband, and as such the router has to be attached to a cable modem which also has to connect to the TV. That means the router is stuck in the corner of my house. This is good when I'm ...
39
votes
2answers
16k views

How does Router know where to forward packet

If several computers with local addresses (192.168.0.#) are connected to a router and each computer opens a web browser and requests a page over HTTP, when these TCP:80 packets are sent out, the ...
44
votes
2answers
7k views

Why would the Wi-Fi connection on my smartphone perform better than the same connection on my laptop?

The download speeds while connected on Wi-Fi to the same router—an ADSL2+ Wireless N300 Modem Router—seems to be significantly faster on my phone than on my laptop. This problem doesn’t occur all the ...
8
votes
2answers
46k views

Setting up wifi router as a switch for Internet Connection Sharing

Can my laptop with a 3G connection share its Internet via a Wifi router (Dlink DIR-615)? If so, what should I set on my laptop, on my router or on the devices connecting to the router?
8
votes
2answers
2k views

How can I configure my wireless network for the strongest security?

There seem to be many security features in wireless routers from MAC address filtering to the authentication type and data encryption. WPA or WPA2 PSK? AES or TKIP? When I set up a new wireless ...
4
votes
1answer
8k views

Accessing a website via the webservers public IP from a PC within the same LAN

If two machines reside on the same LAN (a PC and a Webserver) why is it necessary to enable ‘NAT loopback’ on the router in order for the PC to access the website hosted on the webserver using the ...
10
votes
4answers
3k views

Can I use more than one internet provider at the same time?

Usually a home router has only one uplink connection, enabling a single internet provider at a time. But suppose I hack my router (ie. installing linux), could I use 2 internet providers then?
8
votes
7answers
28k views

How can I make my home PC a web server?

I am running Apache Tomcat on my PC. My PC is connected to a router in my house and the router is connected to my ISP. Now I want to run a server on my pc so that my frined can view my site hosted on ...
1
vote
2answers
12k views

What can I do about “ping flooding”?

Recently I have started getting period of poor connections on my home LAN. So, today after my connection was unresponsive for a while once again, I decided to take a look at what was the problem. The ...
10
votes
4answers
8k views

If a computer is connected to internet via wireless and lan both, which way Internet traffic would flow?

How does this actually work? How different ip addresses on ethernet adapter and wireless adapter are handled for internet data? I know these ip are translated in NAT table but the whole process ...
3
votes
7answers
8k views

Connecting a ADSL router to a wireless router. What am I doing wrong?

What is the correct way to do it? This are the steps I have taken: Disable DHCP in Wireless router Setup a fixed IP (192.168.1.2) and telling that the default Gateway is 192.168.1.1 (the ADSL router)...
3
votes
2answers
3k views

Convert a router to a switch?

I have a couple of modem/routers that came with ISP services that are no longer being used. At the moment I have the current ISP's router running the wireless network and a wired portion to a couple ...
2
votes
1answer
851 views

Bizarre and very specific Internet connection loss

Yesterday (Friday, September 21, 2012), my Internet connection started acting up. After some testing, I confirmed a very specific and baffling set of symptoms: Internet connection goes away every 25-...
18
votes
2answers
67k views

How to route only specific subnet (source ip) to a particular interface?

How to route only specific subnet (source ip) to a particular interface? OS: Linux I know I can do easily by destination IP by using something like route add 1.2.3.4/24 dev eth4 but I do not ...
20
votes
5answers
20k views

Difference between wifi router and access point?

I see both terms used, and I was wondering what the difference is between a wifi router, and a wifi access point. Does the latter only create a LAN, with no way to connect the wifi box with a second ...
9
votes
4answers
50k views

How can I capture packets going from my router to a specific server?

I have a small local network in my house that has two computers connected to a modem-router. I want to capture the packets going from the router to a specific server (I know the IP address of the ...
5
votes
1answer
17k views

Two internet connections, two routers, one network

So here is my situation. We recently got another internet connection setup here at home, which means we have two now. Each internet connection has its own router (both routers have a built in modem, ...
10
votes
2answers
7k views

Will using a 10/100 router stunt gigabit switch speeds for an internal network?

I have a 10/100 Verizon router. 3 computers are connected to this via Ethernet. I'd like to put a gigabit switch between the computers and router to enable gigabit speeds on the intranet. If the ...
7
votes
4answers
5k views

What is a router? What is a switch? and What is a hub?

I always mess up with the basic concepts in networking. This are the very basic questions. What is a router, its functions and what is meant by routing? What is a switch, its functions? Many time I ...
4
votes
1answer
5k views

What information can my ISP see from my router?

I installed a new router today and saw my IP address change because the new router has a different MAC address and I am just curious on what information my ISP can see from my network. I know they ...
3
votes
3answers
2k views

How can I unite two LAN connections on one network?

The small flat in which I live is designed for two students. I manage to pay the entirety of the rent myself, so I'm living by myself, but I have 2 LAN outlets in the flat. I wish to configure a local ...
3
votes
4answers
45k views

How can I bridge a Verizon mobile hotspot modem/router to a Linksys router?

I recently purchased a Verizon mobile hotspot (MiFi 4510L) and was wondering if I could configure my Linksys wireless/wired router (similar, but not the exact model: Linksys router) to use the MiFi as ...
2
votes
5answers
8k views

Optimizing wireless router speed and minimizing interference

I've been experiencing problems with my wireless connectivity lately, and want to make sure that it's not related to the abundance of other wireless routers here in my building. So, what I'm looking ...
2
votes
1answer
936 views

Using Remote Desktop to connect to different computers behind same IP

I'm trying to connect my computer from home to two computers in my office. The office has a router and I already forward the port for computer A. I can successfully connect to my computer A at my home ...
1
vote
3answers
15k views

How do I filter out addresses using HTTPS for a D-Link router?

I recently got a new router, a DRL-600L Router from D-Link, and was setting up some filters to block out certain websites. One problem I am having is blocking out addresses that use https instead of ...
6
votes
3answers
9k views

how to debug epicly slow wifi but fast lan

How can I debug a problem where my wifi is REALLY slow(it takes a minute for this page to load...even my router's admin page - 192.168.0.1)? I've tried upgrading my hardware firmware(using a DIR-600 ...
4
votes
3answers
1k views

Buying another router and use as a “signal repeater” in bridge mode?

I asked about using a pc almost as a "router" and although it's a solution, I tought about just buying a second router to act as a "bridge" between my connection. (Reason: I don't want to have to keep ...
2
votes
2answers
868 views

How does Http server distinguish between computers behind a router

HTTP servers usually operate at port 80. Yet NAT routers as most are these days assign port to outgoing requests so they would know when request is returned that which computer connected to it, it's ...
2
votes
2answers
23k views

How can I minimize the amount my router slows down my Internet connection speed?

Background I'm working with what I assume is a pretty common Internet setup: a cable modem, a wireless router and a few Internet-connected devices. Lately, I've started being more demanding on my ...
1
vote
2answers
2k views

how can i forward requests to my own IP address to a local IP address in my network (possibly using named)?

My setup I have a linux server running in my basement. I currently have my router looking to that server for DNS lookup, so I can use named to spoof a bunch of domain names to point to my local ...
0
votes
3answers
165 views

Trying to set up a home webserver using Ubuntu and Apache2

The steps I’ve taken: Installed Ubuntu on old laptop. Given the laptop a static IP address in local network of 10.1.1.12. Add a service to Netgear DG834GU router for port 80 TCP/UDP Set up a ...
0
votes
1answer
1k views

192.168.1.1 randomly switching between accessing VDSL modem, and accessing the wireless router.

I'm having trouble with my home network, since I've started using a new wireless router. The setup is a Zyxel VDSL Modem pluged into the wall, and connected to a TP-LINK modem via the ethernet ports. ...
152
votes
9answers
23k views

Is it really possible for most enthusiasts to crack people's Wi-Fi networks?

Can most enthusiastic users (even if they are not professionals) use well-known techniques to break through the average home router's security? Some basic security options are: strong network ...
32
votes
10answers
26k views

Can I make two wireless routers communicate using the wireless?

I want to make a setup like this: cable modem <-cable-> wireless router 1 <-wireless-> wireless router 2 in another room <-cables-> PCs in another room Basically, I want to extend my ...
14
votes
2answers
17k views

Why do some WiFi routers block multicast packets going from wired to wireless?

I have worked with dozens of consumer grade WiFi routers, and they have been really hit-or-miss with this, though it seems to be getting better. Example of issue: A device that can be discovered ...
8
votes
4answers
4k views

How can I set my computer up for remote SSH access?

I have a Linux machine that I can access by SSH from my laptop when I am inside my house, but when I am using another Internet connection, I can't connect. What do I need to do? I have Verizon DSL ...
37
votes
4answers
75k views

What does “On-link” mean on the result of “route print” command?

I'm using Windows 7. When I type "route print" under command prompt, I get a IPv4 Route Table with several "On-link" values under the Gateway column. For example, like this one: IPv4 Route Table =====...
23
votes
5answers
5k views

Can my landlord access my personal network because he controls the upstream connection?

Can my landlord access the things on my personal router's network because he controls the upstream connection? For example: the DLNA on my NAS, a public file share on my NAS, or the media server ...
19
votes
2answers
13k views

Does All LAN Traffic Travel Through A Router

I have a very simple question: if I have a router (DHCP enabled - leasing IP addresses between 192.168.0.2 and 192.168.0.254) with a switch plugged in, and I plug two computers into the switch, will ...
14
votes
3answers
8k views

Can dd-wrt or tomato keep track of GB usage per billing period per device?

I want to be able to track the usage of each device connecting to our router so we can split up the ISP bill by usage. Can dd-wrt or tomato provide the stats I'd need to do this? Update: After a bit ...
16
votes
5answers
92k views

Why does my Internet slow to a crawl unless I reboot my router every few days?

A few weeks ago, I noticed that my Internet connection had slowed down to a crawl. I waited a few days hoping it would go away on its own, but it didn't get better. So I asked this question about how ...
8
votes
5answers
15k views

Wireless router that supports Bonjour between wire- and wireless- connected machines

At home I have an ADSL modem that I use also as router. For the record, it is a DavoLink DV-2020 provided by Tele2 in the Netherlands. It turns out that if a computer is connected with a cable to the ...
7
votes
2answers
25k views

How can I setup a win 7 PC as a router?

I have an industrial PC with 4 Ethernet port, I would like to use this PC as a router on windows 7. Before we used Ubuntu so there is an open source solutiosn, but unfortunately the UPS power supply ...
4
votes
2answers
866 views

Connect Router with Access Point by WiFi

Is it possible to connect a Router with an Access Point by pure WiFi?