User`s guide
  2-7
Configuring Client Services
Encryption
If you are transmitting sensitive data across wireless channels, you should enable 
encryption. Encryption requires you to use the same set of encryption keys for the 
RoamAbout R1 and all of your wireless clients. The RoamAbout supports 40-bit or 128-bit 
WEP (Wired Equivalent Privacy) encryption.
• The position of each key is important. The clients must enter the same key in the same 
position to communicate with the RoamAbout R1. 
• 40-bit encryption uses 5-pair ASCII key (or 10 hexadecimal digits). 
• 128-bit encryption uses 13-pair ASCII key (or 26 hexadecimal digits) and supports 
both 40-bit and 128-bit encryption. 
• ASCII keys are case-sensitive.
• Valid Hexadecimal digits are 0-9 or A-F. 
Configuring Client Services
The RoamAbout R1 includes a broad range of client services, including firewall protection, 
network address translation, virtual server, connection support for special applications, and 
restricted Internet access for specified clients. You can configure these functions using the 
Setup Wizard by clicking on Start, or by selecting specific items from the page.
Firewall Protection
The RoamAbout R1’s firewall can block common hacker attacks, including IP Spoofing, 
Land Attack, Ping of Death, IP with zero length, Smurf Attack, UDP port loopback, Snork 
Attack, TCP null scan, and TCP SYN flooding. The firewall does not significantly affect 
system performance, so we advise leaving it enabled to protect your network users.
Wired Equivalent Privacy (WEP) protects data transmitted between 
wireless nodes, but does not protect any transmissions over your wired 
network or over the Internet.
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