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donchan922/port.sh

Created October 12, 2019 14:25
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port.sh
# 使用方法
# -v: 詳細な情報を出力する
# -z: データを送信せずにポートのスキャンのみ行う
$ nc -vz [hostname or IP] [port]
# リモートサーバのポートが空いている場合
$ nc -vz 192.168.1.2 22
Connection to 192.168.1.2 port 22 [tcp/ssh] succeeded!
# リモートサーバのポートが閉じている場合
$ nc -vz 192.168.1.3 22
nc: connectx to 192.168.1.3 port 22 (tcp) failed: Connection refused
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