Linksys router - DHCP Client List - Application available?

Nothing that I am aware of that would interface w/ a Linksys router. Perhaps a solution would be to write a batch script or some other program that will ping each available address on your network, or perhaps a list of specific addresses that are likely to be handed out by DHCP, and create some sort of alert based on that.

Hmm.

The easiest fix would be to secure your network. The set-up software that came with your Linksys router will allow you to do this (it is commonly known as setting up WEP encryption). Doing this will create a network key that must be used before anyone can connect to your wireless network. Naturally, if you have more than one wireless device connected to your network, you would need to write down the key that the router software produced in order to enable the other wireless devices on your network able to access the internet.

Generally, once you input a network key for the devices you want on your network, you won't have to enter it again for you to access the internet. It's generally "click it and forget it." Still, it's not a bad idea to keep the key (once generated) somewhere you can find it again in case you need it.

Linksys routers do not support what you want to do (i.e., show a client list) with the stock firmware that comes installed on the router. There is open-source router firmware out there that will allow you to do this (e.g., WRT or Tomato), but you need to have a certain type of router, as well as some technical know how, in order to get it working.

If you're worried about folks hijacking your signal, the easiest way to prevent it is to enable WEP encryption (which all Linksys routers are able to do.)

There is no application that I know about. Your wireless router or access point is the best source for that information. Just log into the access point and look for "attached devices", "DHCP clients", something along those lines.

If you're concerned that unauthorized people are using wireless networks, there are things that you can do to make it very hard for them to break in.

First, and most importantly, encrypt your wireless using WPA or WPA2. Don't use WEP, it can be broken easily. For your WPA passphrase, come up with something that is at least 20 characters long. Think of a complete sentence, such as "ilovetoplayguildwars" that people would not think of when they are trying to break your wireless network. Then change one or more characters in that phrase into a number or special character, for example "il0vetopl@yguildWar5". Your passphrase should have at least 1 capital letter, one number, and one special character. Now you have a passphrase that is statistically impossible to break. You can write the passphrase down and tape it to the bottom of your wireless access point, if you're worried about forgetting it.

Second, use the MAC filter on your wireless access point to only allow devices with specific MAC IDs to connect. Make sure you add all the wireless devices in your house to the list of allowed devices.

Third, turn off the SSID broadcast. This may not do much, but every little bit helps.

Fourth, if possible, adjust the signal strength of your wireless access point to just enough to cover your house, so that it's harder for passersby to pick it up. This is if you're really paranoid, but that 's not a bad habit to get into, when it comes to security.

That's probably all you can do with most wireless access points, but it's enough to make it just about impossible to break into your network.

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