Can the controller behind a NAT/Firewall device at a remote office communicate with WCS at the main site?
A. If the Controller is behind a firewall, make sure that the UDP ports 161 and 162, which are used for SNMP communication between WCS and WLC, are opened. WCS cannot communicate with WLC if it is behind a NAT device. This is not a supported configuration. The WCS server needs direct IP connectivity to the controller. Q. When I attempt to access the GUI interface for my Wireless Control System or Wireless LAN Controller through Microsoft IE7 I always get the Certificate Warning in the browser. I attempt to install and update the certificate, but it does not work. I always get the “There is a problem with this Website’s security certificate” warning prompt. Why? A. This is a normal behavior. WCS uses self-sign certificates for HTTPS. Because the certificate is self-signed, Internet Explorer (IE) or any browser does not trust the certificate. Thus, it gives you a warning message, which tells you that IE has received a certificate that IE cannot verify. IE7 further tightens up the securit
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