|Hi found this hope it helps?|
Answer thanks to Tesserax.
It sounds like the problem may be the AirPort settings on the MacBook that is the problem. If you temporarily connect your MacBook to the AEBSn using an Ethernet cable, can you access these secure sites now?
If yes, then let's double-check your MacBook's AirPort settings ...
System Preferences > Network > AirPort
o Location: Automatic
o In the left column, verify that an AirPort option exists. If it does not, click "+" to create one. (Note: If you are unable to create an AirPort configuration, the AirPort card in your computer either doesn't exist or it is not recognized.)
o Verify that AirPort is "On." Click "Turn AirPort On" button if not.
o Ask to join new networks: (enabled)
o Show AirPort status in menu bar: (enabled)
Systems Preferences > Network > AirPort > Advanced
o Remember any network this computer has joined: (enabled)
o Disconnect from wireless networks when logging out: (enabled)
o Require Administrator password to control AirPort: (disabled)
o Configure IPv4: Using DHCP
o Configure IPv6: Off
o DNS Servers: <if required, add your desired DNS server IP address(es) here>
o Search Domains: <if required, add your desired DNS Search Domain(s) here>
o Enter desired WINS info or leave the defaults
o Make AppleTalk Active: (disabled)
o Enter desired 802.11X info or leave the defaults
o Enter the desired Proxies info or leave the defaults
If this doesn't help check your firewall Port 433 to see if its not allowing connections to http sites?
And then check your firewalls IPv4 configuration settings for any changes.