1. Install a Firewall A firewall helps protect your PC by preventing unauthorized users from gaining access to your computer through the Internet or a network. It acts as abarrier that checks any information coming from the Internetor a network, and then either blocks the information orallows it to pass through to your computer.
2. Change the Administrative Password on your WirelessRouters Each manufacturer ships their wireless routers witha default password for easy initial access. These passwordsare easy to find on vendor support sites, and shouldtherefore be changed immediately.
3. Change the Default SSID Name and Turn Off SSIDBroadcasting This will require your wireless client computersto manually enter the name of your SSID (Service SetIdentifier) before they can connect to your network, greatlyminimizing the damage from the casual user whose laptop isconfigured to connect to any available SSID broadcast itfinds. You should also change the SSID name from thefactory default, since these are just as well-known as the default passwords.
4. Disable DHCP For a SOHO network with only a few computers, consider disabling DHCP (Dynamic Host Configuration Protocol) on your router and assigning IP addresses to your client computers manually. On new wireless routers, you can even restrict access to the routerto specific MAC addresses.
5. Replace WEP with WPA WEP (Wired Equivalent Privacy) isa security protocol that was designed to provide a wireless computer network with a level of security and privacy comparable to what is usually expected of a wired computer network. WEP is a very weak form of security that uses common 60 or 108 bit key shared among all of the device son the network to encrypt the wireless data. Hackers canaccess tools freely available on the Internet that can crack aWEP key in as little as 15 minutes. Once the WEP key iscracked, the network traffic instantly turns into clear text –making it easy for the hacker to treat the network like anyopen network. WPA (Wi-Fi Protected Access) is a powerful,standards-based, interoperable security technology forwireless computer networks. It provides strong data protection by using 128-bit encryption keys and dynamicsession keys to ensure a wireless computer network'sprivacy and security. Many cryptographers are confidentthat WPA addresses all the known attacks on WEP. It alsoadds strong user authentication, which was absent in WEP.
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