It is very easy to configure IBM HMC to allow web based access. You have to just modify firewall settings on HMC to " Allow Remote Access".
This can be done in following way:
Go to HMC management console: Select " HMC Management" ---> "Change Network Settings" ----> Select Ethernet Adapter ( one with public IP Address) ---> Then select "Secure Remote Access" option and enable it.
You have to restart HMC to make these changes effective
