This value is a list of ports, seperated by whitespace, which the proxy will
allow HTTPS access to. If a user tries to access a port that is not listed
here then access will be denied. This is done for security purposes.
Please note that in order for ports listed here to be permitted through the proxy, the port must have a cooresponding entry in the Permitted Ports box.
The following ports are always permitted for SSL:
- 443 -- HTTPS
- 563 -- NNTP over SSL