Wireless network/Newbie questions - Printable Version
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Wireless network/Newbie questions by alegator on 06-08-2011 at 08:43 AM
Hi, I'm currently using a Win XP SP3 PC connected to the internet using a Cisco ADSL modem physically connected via a network cable to the PC's network card (so no wireless). I bought a netbook that has WiFi that I plan to use in my home. So I also bought a Cisco WRT54GL wireless router. My plan is to keep the PC physically connected to the internet and the Netbook accessing ADSL via wireless. So the basic config would be:
RE: Wireless network/Newbie questions by mezzanine on 06-08-2011 at 10:58 AM
1) You can do that manually via the router's web interface; the wireless access point can be disabled when you're not using it. If security is your concern, there are multiple mechanisms you can configure to prevent unauthorized access, including MAC address based filtering. The access point also automatically adjusts its transmitting power based on the number and position of connected devices.
RE: RE: Wireless network/Newbie questions by alegator on 06-08-2011 at 12:30 PM
quote:Thanks messanine. Regarding security, I also read I have the choice of either WEP or WPA (I read WPA is better), and also the ability to use encryption. Are all of the security options that you mention manageable through the router's web interface? Is the MAC address unique to each hardware or can it be cloned? I guess I can also unscrew the two antennas from the back of the unit when wireless is not in use for an added security. Thanks
RE: Wireless network/Newbie questions by matty on 06-08-2011 at 12:50 PM
If you really want to add as many possible layers as possible consider doing the following:
If you really want to screw with people then leave your WIFI open/unsecured and have a radius server that you must authenticate to
RE: Wireless network/Newbie questions by Menthix on 06-08-2011 at 01:31 PM
quote:Of all those WPA2 WPA2 (AES+TKIP) is the only one really adding security. Others don't add much security for the reasons you already pointed out, although they don't hurt if you want to put up with the hassle. What matters most is your passkey. WPA2 can still be bruteforced, same rules apply as with a password:
- Mixing types of characters
RE: Wireless network/Newbie questions by matty on 06-08-2011 at 02:36 PM
Straight from Microsoft: http://www.microsoft.com/security/online-privacy/passwords-create.aspx
RE: Wireless network/Newbie questions by foaly on 06-08-2011 at 05:31 PM
quote:then again, if they can break WPA2, they will know how to get around all the other measures
RE: Wireless network/Newbie questions by matty on 06-08-2011 at 06:01 PM
quote:I don't disagree with you, however I don't know if WPA2 has been cracked yet. I know WEP and WPA have been.
RE: Wireless network/Newbie questions by foaly on 06-08-2011 at 06:05 PM
quote:TKIP has been IIRC, but WPA2 TKIP+AES not yet...
RE: Wireless network/Newbie questions by alegator on 06-08-2011 at 06:10 PM
Does the WRT54GL router support WPA2? If not, will flashing the firmware with either Tomato or DD-WRT provide WPA2 suppport?
RE: Wireless network/Newbie questions by matty on 06-08-2011 at 06:19 PM
quote:If you check in the Wireless Settings do you see support for WPA2? If not then there is your answer.
DD-WRT does support it yes.
RE: Wireless network/Newbie questions by alegator on 06-08-2011 at 06:26 PM
And if I flash the firmware say to any 3rd party (Tomato, etc), can I revert back to Cisco's factory firmware?
RE: Wireless network/Newbie questions by matty on 06-08-2011 at 06:27 PM
Usually. That is something to look for on the DD-WRT forums. I know with my old WRT54G it was possible.
RE: Wireless network/Newbie questions by prashker on 06-08-2011 at 07:51 PM
quote:Yes, just get the original firmware file (available on the retail website as an "update" or something, .bin, .trx, whatever)
Tomato(USB) > DD-WRT.
RE: Wireless network/Newbie questions by Adeptus on 06-09-2011 at 12:16 AM
quote:One thing that no one so far has mentioned is that you should make sure your ADSL modem isn't already acting as a NAT router. If it is and you stack another one behind it, you will have two stacked layers of NAT and it may appear to work at first. However, you will have all sorts of problems with anything more complicated than basic web browsing with such a setup. Router functionality in ADSL modems is not uncommon.
If you haven't changed anything yet, the easiest way to tell is to check what IP address your computer gets when directly connected to the modem. If it is any of the following, the modem is doing NAT already:
172.16.*.* - 172.31.*.*
If you are getting an address in one of those ranges, you will want to either disable the router function in the modem (if you can) when you introduce your wireless router, or configure the wireless router differently.
We will get to the details of that if needed.
RE: RE: Wireless network/Newbie questions by alegator on 06-09-2011 at 01:58 AM
quote:For the use I'm going to give to the router, is it worth it upgrading the firmware to a 3rd party? I mean, the wireless on/off switch is convenient, but I can also do it from the web browser with the factory installed one.
quote:Thanks, I just checked the IP address but the first numbers do not coincide with any of the numbers that you mention, so should I disregard the modem acting as a NAT router?
RE: Wireless network/Newbie questions by Adeptus on 06-10-2011 at 01:14 AM
quote:If you want to keep it simple, nothing about your intended use requires third party firmware. However, if you want to tinker, it may offer some options of interest.
One that comes to mind is the ability to adjust the transmitter power. Most people want to boost it above the default to increase the range. Since you seem concerned about turning the wireless off entirely when not used (whether for security reasons or because you think it causes cancer), perhaps you would like to reduce it to the minimum needed when you use it. Third party firmware lets you do such things.
It is also worth noting that WRT54GL was made primarily for users of third party firmware, so you are almost wasting it if you don't.
quote:You should and this makes it much easier. Good news.