想着开个 frp，开启客户端时候，无论怎么配置一直出现这个
login to server failed: dial tcp xxx.xxx.xxx.xxx:8290: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
dial tcp xxx.xxx.xxx.xxx:8290: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
看起来像是端口没放行，但我确实是放行了，网上找了好久没结果， 今天进宝塔面板突然发现一个防火墙，原来是安全组和宝塔里都要放行……
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