두 네트워크 끝점 간의 연결을 확인하는 방법이 궁금하십니까? 시스템 관리자의 일반적인 작업 중 하나는 연결을 확인하여 네트워킹 문제를 해결하는 것입니다. 애플리케이션이 백엔드 서비스에 연결할 수 없음, 외부 URL에서 데이터를 가져올 수 없음, 흐름이 열려 있는지 확인 등이 될 수 있습니다. 무엇이든 다음 유틸리티/명령이 도움이 될 것입니다. 그들은 CentOS에서 테스트되었으며 다른 Linux 배포판에서 작동하 ...
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or ncat Raw SMTP # telnet localhost smtp # ncat localhost 25 Trying 127.0.0.1... Connected to... " on a line by itself >Hey >This is test email only >Thanks >. 250 2.0.0 r9M95xgc014513...
Example 8. Ncat as mail client ; $ ncat -C mail.example.com 25 220 mail.example.com ESMTP · 250 mail.example.com Hello client.example.com · 250 OK · 250 Accepted · 354 Enter message, ending with "." on a line by itself · 250 OK · 221 mail.example.com closing connection
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So, we get order to open a remote shell with ncat command in a... command ncat -lvp 200***** 225(Ipv4 adreses) 443 and return me the following message: ncat: establish conection to 200...