Mac日常運維操作說明

測試遠程端口

測試端口失敗示例
localhost:~ mac$ nc -vz -w 2 219.159.12.30 1522
nc: connectx to 219.159.12.30 port 1522 (tcp) failed: Connection refused

測試端口成功示例
localhost:~ mac$ nc -vz -w 2 219.159.12.30 1521
found 0 associations
found 1 connections:
     1: flags=82<CONNECTED,PREFERRED>
        outif en0
        src 10.75.104.222 port 64294
        dst 219.159.12.30 port 1521
        rank info not available
        TCP aux info available

Connection to 219.159.12.30 port 1521 [tcp/ncube-lm] succeeded!