反向DNS主机或网络名称：
When your client Host has Reverse Host Name (i.e. set by your ISP) then login/admin access to client Network or Host is allowed by matching reverse lookup of Host Name.
如果您的客户端主机具有反向主机名（即由您的ISP设置），则通过匹配反向查找主机名可以允许登录/管理员访问客户端网络或主机。
Attention: Reverse host name is usually different than DNS host name
注意：反向主机名通常与DNS主机名不同
Use case:
用例：
In a large country IP-GEO location may not be restrictive enough.
在大国，IP-GEO的位置可能不够严格。
Then use this filter to restrict client hosts to your ISP or IP network.
然后使用此筛选器将客户端主机限制为您的ISP或IP网络。
Optionally disable IP-Geo-Block countries by entering YY as Whitelist country code.
（可选）通过输入YY作为白名单国家/地区代码来禁用IP地理阻止国家/地区。
ie: ‘my.work.pc.example.com’
ie：‘my.work.pc.example.com’
Matches host with ‘*my.work.pc.example.com’ reverse name
匹配具有“ * my.work.pc.example.com”反向名称的主机
ie: ‘.example.com’
即：“。example.com”
Matches all hosts with reverse name ending with ‘.example.com’
匹配所有名称以“ .example.com”结尾的反向主机。
ie: www.example.com, user.example.com, my.work.pc.example.com etc.
即：www.example.com，user.example.com，my.work.pc.example.com等。
ie: ‘.adsl.isp.provider.example.net’
即：“。adsl.isp.provider.example.net”
Match only clients from your adsl provider with reverse name
仅匹配来自您的Adsl提供程序的具有反向名称的客户
ie: 12.43.55.66.adsl.isp.provider.example.net
即：12.43.55.66.adsl.isp.provider.example.net
