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AP-5131 Introduction
1-13
For detailed information on WPA2-CCMP configurations, see Configuring WPA2-CCMP (802.11i) on
page 6-22.
1.2.8.7 Firewall Security
A firewall keeps personal data in and hackers out. The AP-5131 firewall prevents suspicious Internet
traffic from proliferating the AP-5131 managed network. The AP-5131 performs network address
translation (NAT) on packets passing to and from the WAN port. This combination provides enhanced
security by monitoring communication with the wired network.
For detailed information on configuring the AP-5131 firewall, see Configuring Firewall Settings on
page 6-25.
1.2.8.8 VPN Tunnels
Virtual Private Networks (VPNs) are IP-based networks using encryption and tunneling providing
users remote access to a secure LAN. In essence, the trust relationship is extended from one LAN
across the public network to another LAN, without sacrificing security. A VPN behaves like a private
network; however, because the data travels through the public network, it needs several layers of
security. The AP-5131 can function as a robust VPN gateway.
For detailed information on configuring VPN security support, see Configuring VPN Tunnels on page
6-34.
1.2.8.9 Content Filtering
Content filtering allows system administrators to block specific commands and URL extensions from
going out through the AP-5131 WAN port only. Therefore, content filtering affords system
administrators selective control on the content proliferating the network and is a powerful screening
tool. Content filtering allows the blocking of up to 10 files or URL extensions and allows blocking of
specific outbound HTTP, SMTP, and FTP requests.
For detailed information on configuring content filtering support, see Configuring Content Filtering
Settings on page 6-50.
1.2.9 VLAN Support
A Virtual Local Area Network (VLAN) is a means to electronically separate data on the same AP-5131
from a single broadcast domain into separate broadcast domains. By using a VLAN, you can group by
logical function instead of physical location. There are 16 VLANs supported on the AP-5131. An
administrator can map up to 16 WLANs to 16 VLANs and enable or disable dynamic VLAN