Need I deal these errors?

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2017/10/26 17:27:01 http: TLS handshake error from 218.30.116.9:63491: tls: client offered an unsupported, maximum protocol version of 301
2017/10/26 17:27:31 http: TLS handshake error from 183.131.17.228:5785: EOF
2017/10/26 17:27:46 http: TLS handshake error from 220.181.124.109:13908: tls: first record does not look like a TLS handshake
2017/10/26 17:28:01 http: TLS handshake error from 106.120.173.148:12611: tls: client offered an unsupported, maximum protocol version of 301
2017/10/26 17:28:08 http: TLS handshake error from 114.246.213.244:65007: EOF
2017/10/26 17:28:08 http: TLS handshake error from 221.226.11.218:2075: EOF
2017/10/26 17:28:18 http: TLS handshake error from 101.226.66.181:25993: EOF
2017/10/26 17:29:49 http2: server: error reading preface from client 121.35.2.166:13347: timeout waiting for client preface
2017/10/26 17:30:14 http: TLS handshake error from 101.86.31.48:63064: tls: client offered an unsupported, maximum protocol version of 301
2017/10/26 17:30:34 http: TLS handshake error from 101.226.33.216:45169: EOF
2017/10/26 17:31:03 http: TLS handshake error from 106.38.241.150:17153: tls: client offered an unsupported, maximum protocol version of 301
2017/10/26 17:31:24 http2: server: error reading preface from client 220.168.91.206:36593: timeout waiting for client preface
2017/10/26 17:31:39 http: TLS handshake error from 113.16.63.254:27040: EOF
2017/10/26 17:31:47 http2: received GOAWAY [FrameHeader GOAWAY len=33], starting graceful shutdown 2017/10/26 17:32:07 http: TLS handshake error from 116.236.228.74:54655: EOF
2017/10/26 17:32:07 http2: received GOAWAY [FrameHeader GOAWAY len=33], starting graceful shutdown
2017/10/26 17:32:55 http: TLS handshake error from 171.221.217.11:9216: EOF
2017/10/26 17:33:04 http: TLS handshake error from 106.120.173.142:38259: tls: client offered an unsupported, maximum protocol version of 301
2017/10/26 17:33:17 http: TLS handshake error from 101.226.33.221:48190: EO

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Hi @polaris1119,

No, you don’t need to deal with those.

They are failed access attempts. Clients with old, unsupported protocols. Currently Caddy rejects them and logs it to let you know.

You could configure Caddy to accept them instead, but it’s best not to unless it’s absolutely necessary to support an older client.

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