AuthServer {
Hostname (Mandatory; Default: NONE)
SSLAvailable (Optional; Default: no; Possible values: yes, no)
SSLPort (Optional; Default: 443)
HTTPPort (Optional; Default: 80)
Path (Optional; Default: /wifidog/ Note: The path must be both prefixed and suffixed by /. Use a single / for server root.)
LoginScriptPathFragment (Optional; Default: login/? Note: This is the script the user will be sent to for login.)
PortalScriptPathFragment (Optional; Default: portal/? Note: This is the script the user will be sent to after a successfull login.)
MsgScriptPathFragment (Optional; Default: gw_message.php? Note: This is the script the user will be sent to upon error to read a readable message.)
PingScriptPathFragment (Optional; Default: ping/? Note: This is the script the user will be sent to upon error to read a readable message.)
AuthScriptPathFragment (Optional; Default: auth/? Note: This is the script the user will be sent to upon error to read a readable message.)
}
# Listen on this port
GatewayPort 2060
# Parameter: CheckInterval
# Default: 60
# Optional
#
# How many seconds should we wait between timeout checks. This is also
# how often the gateway will ping the auth server and how often it will
# update the traffic counters on the auth server. Setting this too low
# wastes bandwidth, setting this too high will cause the gateway to take
# a long time to switch to it's backup auth server(s).
CheckInterval 60
# Parameter: ClientTimeout
# Default: 5
# Optional
#
# Set this to the desired of number of CheckInterval of inactivity before a client is logged out
# The timeout will be INTERVAL * TIMEOUT
ClientTimeout 5
AuthServer是Portal服务器的配置项；GatewayPort是Wifidog监听的地址，默认是2060，一般保持默认即可；CheckInterval是心跳时长，单位是秒，什么是心跳呢，客户端认证成功之后，如果有网络访问动作，Wifidog getway就会每隔一段时间访问Portal服务器的一个脚本，用于认证计费，当然，如果客户使用超时或超流量，也可以通过心跳强制客户端下线。ClientTimeout是用户一次认证成功后的网络访问时长，超过这个时间需要重新认证，这个时长并非由ClientTimeout单独决定，取决于INTERVAL * TIMEOUT。详细的配置信息可以访问：http://dev.wifidog.org/browser/trunk/wifidog/wifidog.conf。
重点讨论Portal服务器的配置项，Hostname是Portal服务器的ip或者是域名，SSLAvailable和SSLPort是SSL加密配置，如果你的Portal服务器有配置HTTPS加密，则需要配置这两项；Path是指你的脚本路径(举例，http://a.com/to/，则a.com是域名，/to/是路径)，注意路径必须以“/”开头和结尾，如果是根路径，则填一个“/”即可；接下来的5个配置指明你的脚本名，这说明了我们需要写五个脚本，我会详细说明。(以下文中涉及的“第几步”均是指Wifidog认证过程的步骤)
LoginScriptPathFragment配置项配置的是登陆脚本，它通过GET方式接受传入参数gw_address、gw_port、gw_id、mac和url，gw_address是AP Getway的ip地址；gw_port是Wifidog监听的端口，即上面介绍的wifidog.conf中的GatewayPort配置；gw_id是AP Getway的id，配置文件wifidog.conf中可以配置，默认值是default，这个值的作用是当存在
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