The client's IP address must be allowed to connect to the PIX before PIX Device Manager (PDM) can be loaded in the client's browser.
From the command-line interface of the PIX, you must enter the IP address of the client(s) that are permitted to connect to this PIX using PDM.
Use the http ip_address [netmask] [if_name] command to add the client's IP address to the list of IP addresses allowed to connect to the PIX on PDM.
PIX sylog indicates, PIX-6-605001: HTTP daemon interface int_name: connection denied from IP_addr
Connectivity to the device
Troubleshoot software feature
Firewall management applications