root@LEDE:~# grep -RniA3 "authentication" /etc/openclash /etc/config/openclash 2>/dev/null

/etc/openclash/47_112_97_173.yaml:5254:authentication:

/etc/openclash/47_112_97_173.yaml-5255-- Clash:ia41qSQq

--

/etc/config/openclash:305:config authentication

/etc/config/openclash-306-      option enabled '1'

/etc/config/openclash-307-      option username 'Clash'

/etc/config/openclash-308-      option password 'ia41qSQq'

上面就是密码
测试

 curl -x http://192.168.1.4:7893 -U Clash:ia41qSQq -I https://www.google.com/generate_204 --connect-timeout 10

 curl -x http://127.0.0.1:7893 -U Clash:ia41qSQq -I https://www.google.com/generate_204 --connect-timeout 10

最简单做法：关闭 OpenClash 的代理认证。你截图里已经勾了“仅允许内网”，只在家里局域网用的话可以关

uci set openclash.@authentication[0].enabled='0'

uci commit openclash

/etc/init.d/openclash restart