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Old 05-06-2003, 10:53 AM   #1
Registered: Mar 2003
Location: Chicago, IL
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Wireless - Routers - Firewalls - Slack 9


I've been using a 4 port switch/router by Linksys BEFSR41 for my home network, and it's been working excellent. I just added an access point Linksys WAP54G and I've been hearing a lot about security when using a wireless network. I know that my linksys router has a firewall, but doesn't protect people from hacking into the wireless network. I have no clue about firewalls and was wondering if there is something in linux that I can use to protect myself from others either getting into the network or stealing my signal.
Old 05-06-2003, 07:47 PM   #2
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From what I have been able to determine, look into MAC address filtering in the access point. It may not be 100% full proof, but if anybody wants to steal some bandwidth at least make 'em work for it. I think a MAC address is easy to spoof, but difficult to determine an acceptable address.

I have found that WEP is difficult to implement with equipment from different manufacturers. So I have left it disabled. But I think this security measure is intended more to prevent eavesdropping issues.

Most equipment also allows an option to disable the broadcast of the ESSID value. I haven't tried this as yet. But once your wireless LAN is established, you might try turning it off.

In reference to Slack 9 though, it really doesn't have anything to do with it. Unless of course the access point is connected directly to a dedicated NIC in the Slack box and it then becomes the gateway for the wireless network. Firewall rules would still be the same as any other network. In addition, even DHCP services can be configured to assign only to certain MAC addresses from the Linux server.

Perhaps it has been of some help.


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