출처 :&nbsp;<a class="tx-link" href="http://snoopybox.co.kr/1576" target="_blank">http://snoopybox.co.kr/1576</a>&nbsp;&nbsp;<a href="http://www.motolies.tistory.com/567" target="_blank">2016/10/24 - [PC/Util] - TCP/IP Socket 통신 프로그램</a><a href="https://hvy.kr/post/701" target="_blank">https://hvy.kr/post/701</a> &nbsp;&nbsp;<a class="file-link" href="/api/file/0JX8TPR1V88QV" target="_blank">tcping.7z</a>&nbsp; &nbsp;<p style="color:rgb(51, 51, 51);font-family:나눔고딕, nanumgothic, 맑은고딕, 'malgun gothic', 'lucida Grande', 'lucida Sans Unicode', dotum, gulim, appleGothic, sans-serif;font-size:13px;line-height:23.4px;margin-left:0px;margin-right:0px;padding:0px;">&nbsp; &nbsp;<div class="txc-textbox" style="background-color:rgb(219, 232, 251);border:1px dashed rgb(121, 165, 228);color:rgb(51, 51, 51);font-family:나눔고딕, nanumgothic, 맑은고딕, 'malgun gothic', 'lucida Grande', 'lucida Sans Unicode', dotum, gulim, appleGothic, sans-serif;font-size:13px;line-height:23.4px;margin:0px;padding:10px;">Usage: tcping [-t] [-d] [-i interval] [-n times] server-address [server-port] &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -t&nbsp;&nbsp; : ping continuously until stopped via control-c &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -n 5 : for instance, send 5 pings &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -i 5 : for instance, ping every 5 seconds &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -w 100 : for instance, wait 100 milliseconds for a response &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -d&nbsp;&nbsp; : include date and time on each line &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -b 1 : enable beeps (1 for on-down, 2 for on-up, &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3 for on-change, 4 for always) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -r 5 : for instance, relookup the hostname every 5 pings &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -s&nbsp;&nbsp; : automatically exit on a successful ping &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -v&nbsp;&nbsp; : print version and exit&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; If you don't pass server-port, it defaults to 80.</div> 사용법을 보시면 그냥 ping 명령어와 비슷하게 생겼는데, 특정 포트를 지정할 수 있다는 점이 가장 큰 매력입니다. 기본 포트는 80이기 때문에 웹서버를 점검하려면 뒤에 포트 없이 IP만 입력하시면 됩니다. &nbsp;&nbsp;공유 폴더는&nbsp;445, 원격 데스크톱은 3389 등을 체크해보시면 되겠죠.&nbsp;&nbsp;물론 포트가 열려있다고 해서 서비스가 정상이라 판단할 수는 없지만, 최소한 둘 사이에 방화벽은 막혀있지 않고 서비스 프로세스(데몬)가 살아있다는 결론 정도는&nbsp;내릴 수 있습니다. -t 옵션은 계속 보내는 것이고, -b 1 옵션을 붙이면 실패시 비프음이 발생하게 됩니다. 특히 -d 옵션을 붙이면 매 줄마다 날짜와 시간이 찍히기 때문에 네트웍 작업시 언제, 몇초동안 Ping이 빠졌는지 점검할 때 유용하게 쓰일 수 있습니다. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

특정 TCP 포트로 Ping 날리는 프로그램 - tcping