サーバと通信できない時に試すコマンド。
TCP
1 | nc -vz <host or ip_address> <port> |
具体例
1 2 3 4 5 6 7 8 | # 成功例 nc -vz www.google.com 80 Connection to www.google.com 80 port [tcp/http] succeeded! # 失敗例 nc -vz www.google.com 88 nc: connect to www.google.com port 88 (tcp) failed: Connection timed out nc: connect to www.google.com port 88 (tcp) failed: Network is unreachable |
UDP
1 | nc -uvz <host or ip_address> <port> |
ncコマンドがない時
yumやaptでインストールしてください。
1 | yum install nc |
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宮崎県在住。
プログラムを書いて暮らしています。趣味はルアーフィッシング、ギター。