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CentOSでポート開放確認する時のメモ

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Last updated at Posted at 2017-05-19

telnetをインストールするのが面倒な時は

curl -v telnet://<ipアドレス>:<ポート番号>

# 疎通確認出来ればこんな感じで表示されます
Connected to xxx.xxx.xxx.xxx (xxx.xxx.xxx.xxx) port 22 (#0)

# 失敗するとこんな感じで表示されます
Failed to connect to xxx.xxx.xxx.xxx port 22: Operation timed out

でOKです。

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