<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">안녕하세요!</div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;"></div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">분명 저번시간에서 ip는 아파트 동, port는 몇호실 그런 개념이라고 말씀하셨고 포트는 자율적으로 부여할 수 있는 것처럼 들렸는데, http는 80 https는 443이런식으로 정해져 버리면</div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">해당 사이트에선 포트를 자율적으로 선택하지 못하는건가요? 거의 반강제적으로 약속이 된거라고 보면 되는건가요?</div>

<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. {질문자}님, 공식 서포터즈 {답변자}입니다.\n{내용}\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:0,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:15,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:22}" data-sheets-hyperlinkruns="{&quot;1&quot;:15,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:22}" style="font-size: 12pt; font-family: Arial;">안녕하세요. 권형택님, <a class="in-cell-link" href="https://www.inflearn.com/blogs/617" target="_blank" rel="noopener noreferrer">공식 서포터즈</a> David입니다. .
<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. {질문자}님, 공식 서포터즈 {답변자}입니다.\n{내용}\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:0,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:15,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:22}" data-sheets-hyperlinkruns="{&quot;1&quot;:15,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:22}" style="font-size: 12pt; font-family: Arial;">80, 443, 21, 22 등의 port들을 well-known<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. {질문자}님, 공식 서포터즈 {답변자}입니다.\n{내용}\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:0,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:15,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:22}" data-sheets-hyperlinkruns="{&quot;1&quot;:15,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:22}" style="font-size: 12pt; font-family: Arial;">&nbsp;port라고 합니다.
<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. {질문자}님, 공식 서포터즈 {답변자}입니다.\n{내용}\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:0,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:15,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:22}" data-sheets-hyperlinkruns="{&quot;1&quot;:15,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:22}" style="font-size: 12pt; font-family: Arial;">IANA란 기관에서 권고하는 사항들인데 말그대로 권고안이기 때문에 따르지 않아도 됩니다.<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. {질문자}님, 공식 서포터즈 {답변자}입니다.\n{내용}\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:0,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:15,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:22}" data-sheets-hyperlinkruns="{&quot;1&quot;:15,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:22}" style="font-size: 12pt; font-family: Arial;">
<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. {질문자}님, 공식 서포터즈 {답변자}입니다.\n{내용}\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:0,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:15,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:22}" data-sheets-hyperlinkruns="{&quot;1&quot;:15,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:22}" style="font-size: 12pt; font-family: Arial;">더 자세한 설명은 이 글을 참고해주세요.&nbsp;<a href="https://shaeod.tistory.com/389" target="_blank" rel="noopener noreferrer">https://shaeod.tistory.com/389</a>
<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;안녕하세요. {질문자}님, 공식 서포터즈 {답변자}입니다.\n{내용}\n감사합니다.&quot;}" data-sheets-userformat="{&quot;2&quot;:1063747,&quot;3&quot;:{&quot;1&quot;:0},&quot;4&quot;:{&quot;1&quot;:2,&quot;2&quot;:16777215},&quot;9&quot;:0,&quot;11&quot;:0,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;,&quot;16&quot;:12,&quot;23&quot;:1}" data-sheets-textstyleruns="{&quot;1&quot;:0}{&quot;1&quot;:15,&quot;2&quot;:{&quot;2&quot;:{&quot;1&quot;:2,&quot;2&quot;:1136076},&quot;9&quot;:1}}{&quot;1&quot;:22}" data-sheets-hyperlinkruns="{&quot;1&quot;:15,&quot;2&quot;:&quot;https://www.inflearn.com/blogs/617&quot;}{&quot;1&quot;:22}" style="font-size: 12pt; font-family: Arial;">. 감사합니다.
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참고
* <a href="https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml" target="_blank" rel="noopener noreferrer">https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml</a>

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