It also implements SSL and the ability for users to set a fixed IP range from the admin panel.

它也提供SSL链接，用户也可以从管理员面板上设置固定的IP地址范围。

youdao

The "fixed IP" addresses that have to be included are the real (not virtual) addresses of the servers.

必须包含的“固定ip”是服务器的真实(而不是虚拟)地址。

youdao

The problem is that the original version of Internet Protocol (IPv4), on which the bulk of the Internet has been built thus far, has a fixed capacity of 4.3 billion IP addresses.

FORBES: The Internet Gets Its First Global Upgrade: Happy World IPv6 Day