Manual Linksys WRT150N - Wireless-N home router (page 70 of 90) (English)

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Appendix B: Wireless Security

Security Threats Facing Wireless Networks

Wireless-N Home Router

SSID. There are several things to keep in mind about the SSID:

1. Disable Broadcast

2. Make it unique

3. Change it often

Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be

more convenient, it allows anyone to log into your wireless network. This includes hackers. So, don’t broadcast

the SSID.

Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is “linksys”.)

Hackers know these defaults and can check these against your network. Change your SSID to something unique

and not something related to your company or the networking products you use.

Change your SSID regularly so that any hackers who have gained access to your wireless network will have to

start from the beginning in trying to break in.

MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only

those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with

a random MAC Address.

WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a cure-all for wireless security

concerns. This is overstating WEP’s ability. Again, this can only provide enough security to make a hacker’s job

more difficult.

There are several ways that WEP can be maximized:

1. Use the highest level of encryption possible

2. Use “Shared Key” authentication

3. Change your WEP key regularly

PSK.Pre-Shared Key (PSK) is the newest and best available standard in Wi-Fi security. PSK2 is the newer version

of Wi-Fi Protected Access with stronger encryption than PSK. PSK and PSK2 gives you a choice of two encryption

methods: TKIP (Temporal Key Integrity Protocol), which incorporates Message Integrity Code (MIC) to provide

protection against hackers, and AES (Advanced Encryption System), which utilizes a symmetric 128-Bit block

data encryption. (AES is stronger than TKIP.)

IMPORTANT: Always remember that each device

in your wireless network MUST use the same

security method and key, or else your wireless

network will not function properly.

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Linksys WRT150N - Wireless-N home router Manual

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