dd-wrt或者openwrt都有parental control支持，需要将这台路由器配置为网关。
https://wiki.dd-wrt.com/wiki/index.php/Parental_control
https://www.bitbull.ch/notes/tag/parentalcontrol/
https://openwrt.org/docs/guide-user/firewall/fw3_configurations/fw3_parent_controls
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