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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta
name="viewport"
content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"
/>
<title>동아리방에 지금 누가 있나요? | Who is at the club room?</title>
<link rel="stylesheet" href="dist/reset.css" />
<link rel="stylesheet" href="dist/reveal.css" />
<link rel="stylesheet" href="dist/theme/maxswjeon.css" />
<!-- Theme used for syntax highlighted code -->
<link rel="stylesheet" href="plugin/highlight/monokai.css" />
<script src="plugin/notes/notes.js"></script>
<link
rel="stylesheet"
as="style"
crossorigin
href="https://cdn.jsdelivr.net/gh/orioncactus/[email protected]/dist/web/variable/pretendardvariable.css"
/>
<script src="https://cdn.tailwindcss.com"></script>
<script>
tailwind.config = {
important: true,
};
</script>
<script
src="https://kit.fontawesome.com/6a0c65fb34.js"
crossorigin="anonymous"
></script>
<script>
// Enable Click to all sildes
window.addEventListener("load", function () {
[...document.querySelectorAll("section")]
.filter((e) => !e.classList.contains("no-click"))
.forEach((slide) => {
slide.addEventListener("click", Reveal.next);
});
});
</script>
</head>
<body>
<div class="reveal">
<div class="slides">
<section class="cover flex justify-between items-center no-click">
<div>
<h1 class="leading-[0.75]">
동아리방에 지금 누가 있나요?<br />
<span class="sub text-4xl">Who is in the club room?</span>
</h1>
<p>
Freeradius부터 ARP Scanner까지<br />
<span class="sub">From Freeradius to ARP Scanner</span>
</p>
</div>
<div>
<div onclick="Reveal.next()" class="door">
<div class="door-front">
<div class="knob"></div>
</div>
<div class="door-back"></div>
</div>
</div>
</section>
<section>
<h1 class="text-left">
발표자 소개
<span class="sub text-4xl">Speaker Information</span>
</h1>
<div class="flex gap-6 items-center">
<img
alt="Sangwan Jeon's Profile Picture"
src="/assets/profile.jpg"
class="max-w-[300px]"
/>
<div class="flex flex-col h-[384px]">
<div class="flex w-[500px]">
<div>
<h2 class="text-left">
전상완 <span class="sub text-2xl">Sangwan Jeon</span>
</h2>
<ul class="text-lg">
<li>연세대학교 전기전자공학부 학부생</li>
<li>YCC (Yonsei Computer Club) 임원진</li>
</ul>
</div>
<div class="grow"></div>
<div>
<img
alt="https://app.sli.do/event/eMg1YyHjegm9KN9qpbB5T5"
src="/assets/slido.png"
class="max-w-[150px]"
/>
<p>Q&A</p>
</div>
</div>
<div class="grow"></div>
<ul class="text-lg list-none m-0">
<li>
<i class="fa-solid fa-envelope"></i>
<a href="mailto:[email protected]">[email protected]</a>
</li>
<li><i class="fa-brands fa-github"></i> maxswjeon</li>
<li><i class="fa-brands fa-instagram"></i> maxswjeon</li>
<li><i class="fa-brands fa-linkedin"></i> maxswjeon</li>
<li>
<i class="fa-solid fa-square-rss"></i>
<a href="https://blog.codingbear.kr" target="_blank"
>https://blog.codingbear.kr</a
>
</li>
</ul>
</div>
</div>
</section>
<section>
<h1>발표 주제 <span class="sub text-4xl">Presentation Topic</span></h1>
<div class="flex justify-between align-center">
<img alt="Demo Site Screenshot" src="/assets/demo.jpg" class="w-[400px]" />
<div class="flex flex-col justify-center">
<ol class="inline-block text-2xl">
<li>동아리방에 있는 WiFi에 802.1x을 적용하는 방법</li>
<li>
WiFi를 이용해 동아리방에 누가 있는지<br />
실시간으로 확인할 수 있는 서비스를 구축하는 방법
</li>
</ol>
<ol class="inline-block sub text-xl mt-3">
<li>Applying 802.1x to the WiFi in the club room</li>
<li>
Making a service that can check <br />
who is in the club room in real time using WiFi
</li>
</ol>
</div>
</div>
</section>
<section>
<h1 class="leading-[0.75]">
그런게 왜 필요했는데?<br />
<span class="sub text-2xl">Why did you need a such a thing?</span>
</h1>
<h2 class="text-left">Reason 1</h2>
<div class="flex gap-12 items-center h-[320px]">
<img
alt="Yonsei Computer Club Notice Kakao Talk Room"
src="/assets/chatroom.jpg"
/>
<div>
<p>회원수 188명의 대형 동아리</p>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide03">
<h1 class="leading-[0.75]">
그런게 왜 필요했는데?<br />
<span class="sub text-2xl">Why did you need a such a thing?</span>
</h1>
<h2 class="text-left">Reason 1</h2>
<div class="flex gap-12 items-center h-[320px]">
<div class="w-[426px] flex justify-center">
<img
alt="Yonsei Computer Club Talking about the WiFi Password Leak"
src="/assets/leak.jpg"
/>
</div>
<div>
<p>비밀번호 유출 사건의 발생</p>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide03">
<h1 class="leading-[0.75]">
그런게 왜 필요했는데?<br />
<span class="sub text-2xl">Why did you need a such a thing?</span>
</h1>
<h2 class="text-left">Reason 1</h2>
<div class="flex gap-12 items-center h-[320px]">
<div class="w-[426px] flex justify-center">
<img
alt="Yonsei Computer Club Talking about the WiFi Password Leak"
src="/assets/leak.jpg"
/>
</div>
<div class="text-left">
<p>비밀번호 유출 사건의 발생</p>
<p>=> 주기적으로 비밀번호를 바꾸는 방법</p>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide03">
<h1 class="leading-[0.75]">
그런게 왜 필요했는데?<br />
<span class="sub text-2xl">Why did you need a such a thing?</span>
</h1>
<h2 class="text-left">Reason 1</h2>
<div class="flex gap-12 items-center h-[320px]">
<div class="w-[426px] flex justify-center">
<img
alt="Yonsei Computer Club Talking about the WiFi Password Leak"
src="/assets/leak.jpg"
/>
</div>
<div class="text-left">
<p>비밀번호 유출 사건의 발생</p>
<p>=> 주기적으로 비밀번호를 바꾸는 방법</p>
<p>=> 아니면, 부원마다 다른 비밀번호를?</p>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide03">
<h1 class="leading-[0.75]">
그런게 왜 필요했는데?<br />
<span class="sub text-2xl">Why did you need a such a thing?</span>
</h1>
<h2 class="text-left">Reason 2</h2>
<div
class="flex flex-wrap justify-around items-center h-[320px] bg-[#bacee0]"
>
<img alt="A chat asking who is at the club room 1" src="/assets/who1.png" />
<img alt="A chat asking who is at the club room 2" src="/assets/who2.png" />
<img alt="A chat asking who is at the club room 3" src="/assets/who3.png" />
<img alt="A chat asking who is at the club room 4" src="/assets/who4.png" />
<img alt="A chat asking who is at the club room 5" src="/assets/who5.png" />
<p class="text-4xl font-bold text-[#2b2b2b] w-[364px] text-center">
반복되는 질문
</p>
</div>
</section>
<section>
<h1>
비밀번호 유출 문제 해결하기<br />
<span class="sub text-2xl">Solving the password leak problem</span>
</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide04">
<h1>해결 방법들 <span class="sub text-2xl">Solutions</span></h1>
<ol>
<li>주기적으로 비밀번호를 바꾼다</li>
</ol>
</section>
<section data-auto-animate data-auto-animate-id="slide04">
<h1>해결 방법들 <span class="sub text-2xl">Solutions</span></h1>
<ol>
<li><s>주기적으로 비밀번호를 바꾼다</s></li>
</ol>
</section>
<section data-auto-animate data-auto-animate-id="slide04">
<h1>해결 방법들 <span class="sub text-2xl">Solutions</span></h1>
<ol>
<li><s>주기적으로 비밀번호를 바꾼다</s></li>
<li>부원마다 다른 비밀번호를 부여한다</li>
</ol>
</section>
<section data-auto-animate data-auto-animate-id="slide05">
<h1>
WiFi 인증 방식<br />
<span class="sub text-2xl">WiFi Authentication Methods</span>
</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide05">
<h1>
WiFi 인증 방식<br />
<span class="sub text-2xl">WiFi Authentication Methods</span>
</h1>
<h2 class="text-left">Open</h2>
<div class="flex gap-12 items-center h-[320px]">
<div class="w-[426px] flex justify-center">
<img alt="A WiFi network with no password" src="/assets/open.jpg" />
</div>
<div class="text-left">
<p>비밀번호가 없는 WiFi</p>
<p>- 누구나 접속 가능</p>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide05">
<h1>
WiFi 인증 방식<br />
<span class="sub text-2xl">WiFi Authentication Methods</span>
</h1>
<h2 class="text-left">PSK (Pre-Shared Key)</h2>
<div class="flex gap-12 items-center h-[320px]">
<div class="w-[426px] flex justify-center">
<img alt="A WiFi network with pre-shared key" src="/assets/psk.jpg" />
</div>
<div class="text-left">
<p>비밀번호가 있는 WiFi</p>
<p>- 비밀번호를 알면 접속 가능</p>
<p>- 비밀번호 유출 시 제지할 수 있는 수단이 없음</p>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide05">
<h1>
WiFi 인증 방식<br />
<span class="sub text-2xl">WiFi Authentication Methods</span>
</h1>
<h2 class="text-left">EAP (Extensible Authentication Protocol)</h2>
<div class="flex gap-12 items-center h-[320px]">
<div class="w-[426px] flex justify-center">
<img alt="A WiFi network with EAP" src="/assets/eap.jpg" />
</div>
<div class="text-left">
<p>로그인 방식의 WiFi</p>
<p>- 개인에게 할당된 비밀번호가 다름</p>
<p>- 비밀번호 유출 시 제지할 수 있는 수단이 있음</p>
</div>
</div>
</section>
<section>
<h1>802.1x</h1>
<p>
로컬 영역 네트워크에서 상대 기기와 연결하는 기기에 대한 인증을 제공하는
방식을 정의한 표준
</p>
</section>
<section>
<img alt="An ipTime router setup page" src="/assets/ipTime.jpg" />
</section>
<section data-auto-animate data-auto-animate-id="slide07">
<h1>RADIUS?</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide07">
<h1>RADIUS?</h1>
<p>Remote Authentication Dial In User Service</p>
</section>
<section data-auto-animate data-auto-animate-id="slide07">
<h1>RADIUS?</h1>
<p>Remote Authentication Dial In User Service</p>
<p>
네트워크 자원에 대한 접근을 인증(Authenticate)하고 허가(Authorize)하며
관리(Accounting)
</p>
</section>
<section data-auto-animate data-auto-animate-id="slide07">
<h1>RADIUS?</h1>
<p>Remote Authentication Dial In User Service</p>
<p>
네트워크 자원에 대한 접근을 인증(Authenticate)하고 허가(Authorize)하며
관리(Accounting)
</p>
<p>802.1x 위에서 인증을 담당하는 서버</p>
</section>
<section data-auto-animate data-auto-animate-id="slide08">
<div class="flex justify-between h-[400px]">
<div class="flex justify-around items-center w-1/6"></div>
<div class="flex justify-around items-center w-1/6"></div>
<div
data-id="RADIUS Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-blue-500"
>
RADIUS Server
</div>
<div class="w-1/6"></div>
<div class="w-1/6"></div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide08">
<div class="flex justify-between h-[400px]">
<div class="flex justify-around items-center w-1/6"></div>
<div class="flex justify-around items-center w-1/6"></div>
<div
data-id="RADIUS Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-blue-500"
>
RADIUS Server
</div>
<div class="flex justify-center items-center w-1/6" data-id="arrow-2">
<i class="fa-solid fa-arrow-right"></i>
</div>
<div
data-id="802.1x Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-gray-500"
>
802.1x
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide08">
<div class="flex justify-between h-[400px]">
<div class="flex justify-around items-center w-1/6">
<div
data-id="File Box"
class="flex justify-center items-center w-full h-12 rounded-lg bg-yellow-500"
>
File
</div>
</div>
<div class="flex justify-center items-center w-1/6" data-id="arrow-1">
<i class="fa-solid fa-arrow-right"></i>
</div>
<div
data-id="RADIUS Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-blue-500"
>
RADIUS Server
</div>
<div class="flex justify-center items-center w-1/6" data-id="arrow-2">
<i class="fa-solid fa-arrow-right"></i>
</div>
<div
data-id="802.1x Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-gray-500"
>
802.1x
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide08">
<div class="flex justify-between h-[400px]">
<div class="flex flex-col justify-around items-center w-1/6">
<div
data-id="LDAP Box"
class="flex justify-center items-center w-full h-12 rounded-lg bg-yellow-500"
>
LDAP
</div>
<div
data-id="File Box"
class="flex justify-center items-center w-full h-12 rounded-lg bg-yellow-500"
>
File
</div>
<div
data-id="SQL Box"
class="flex justify-center items-center w-full h-12 rounded-lg bg-yellow-500"
>
SQL Database
</div>
</div>
<div class="flex justify-center items-center w-1/6" data-id="arrow-1">
<i class="fa-solid fa-arrow-right"></i>
</div>
<div
data-id="RADIUS Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-blue-500"
>
RADIUS Server
</div>
<div class="flex justify-center items-center w-1/6" data-id="arrow-2">
<i class="fa-solid fa-arrow-right"></i>
</div>
<div
data-id="802.1x Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-gray-500"
>
802.1x
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide08">
<div class="flex justify-between h-[400px]">
<div class="flex flex-col justify-around items-center w-1/6">
<div
data-id="LDAP Box"
class="flex justify-center items-center w-full h-12 rounded-lg bg-yellow-500 border-8 border-red-500"
>
LDAP
</div>
<div
data-id="File Box"
class="flex justify-center items-center w-full h-12 rounded-lg bg-yellow-500"
>
File
</div>
<div
data-id="SQL Box"
class="flex justify-center items-center w-full h-12 rounded-lg bg-yellow-500"
>
SQL Database
</div>
</div>
<div class="flex justify-center items-center w-1/6" data-id="arrow-1">
<i class="fa-solid fa-arrow-right"></i>
</div>
<div
data-id="RADIUS Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-blue-500"
>
RADIUS Server
</div>
<div class="flex justify-center items-center w-1/6" data-id="arrow-2">
<i class="fa-solid fa-arrow-right"></i>
</div>
<div
data-id="802.1x Box"
class="flex justify-center items-center w-1/6 rounded-lg bg-gray-500"
>
802.1x
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide09">
<h1>LDAP</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide09">
<h1>LDAP</h1>
<p>Lightweight Directory Access Protocol</p>
</section>
<section>
<h1>Why LDAP?</h1>
<p>RADIUS를 포함한 여러 서비스들이 User Federation 용도로 사용</p>
</section>
<section>
<img
class="w-2/3 m-auto"
alt="Screenshot of a Keycloak LDAP configuration"
src="/assets/keycloak.png"
/>
</section>
<section>
<h1>LDAP Entry Structure</h1>
<img
class="w-2/3 m-auto"
alt="Screenshot of a LDAP entry"
src="/assets/LDAP.jpg"
/>
</section>
<section data-auto-animate data-auto-animate-id="slide10">
<h1>컨테이너 구조 <span class="sub text-2xl">Container Structure</span></h1>
<div
class="flex flex-wrap justify-around p-12 border-4 border-solid border-[#2496ed] rounded-xl w-4/5 h-[600px] m-auto gap-12"
>
<div
class="flex justify-center items-center border-4 border-solid border-white rounded-lg w-2/5"
data-id="slide11-container-certbot"
>
<h2 class="text-2xl">Certbot</h2>
</div>
<div
class="flex justify-center items-center border-4 border-solid border-white rounded-lg w-2/5"
data-id="slide11-container-postgres"
>
<h2 class="text-2xl">PostgreSQL</h2>
</div>
<div
class="flex justify-center items-center border-4 border-solid border-white rounded-lg w-2/5"
data-id="slide11-container-openldap"
>
<h2 class="text-2xl">OpenLDAP</h2>
</div>
<div
class="flex justify-center items-center border-4 border-solid border-white rounded-lg w-2/5"
data-id="slide11-container-freeradius"
>
<h2 class="text-2xl">FreeRadius</h2>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide10">
<h1>컨테이너 구조 <span class="sub text-2xl">Container Structure</span></h1>
<div
class="flex flex-wrap justify-around p-12 border-4 border-solid border-[#2496ed] rounded-xl w-4/5 h-[600px] m-auto gap-12"
>
<div
class="border-4 border-solid border-white rounded-lg w-full p-6"
data-id="slide11-container-certbot"
>
<h2 class="text-2xl text-left">Certbot</h2>
<p class="text-left text-xl">
OpenLDAP의 TLS 설정에 필요한 Certificate를 발급하고 갱신한다<br />
<span class="sub">
Issues and Renews Certificate for TLS settings of OpenLDAP
</span>
</p>
<div class="mt-3">
<h3 class="text-xl text-left">Entrypoint</h3>
<p class="text-base text-left">/docker-entrypoint.sh</p>
<ol class="text-base text-left w-full">
<li>Certificate 존재 확인</li>
<li>Certificate이 없으면 발급</li>
<li>Container 상태를 Healthy로 변경</li>
<li>24시간마다 인증서 갱신 시도</li>
</ol>
</div>
<div class="mt-3 flex gap-6">
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Volume Mounts</h3>
<ul class="text-base w-full">
<li>./data/certbot​:/etc/letsencrypt</li>
<li>./data/certs​:/certs</li>
<li>
./scripts/certbot/docker-entrypoint.sh​:/docker-entrypoint.sh
</li>
</ul>
</div>
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Port Exposure</h3>
<p class="text-base text-left">None</p>
</div>
</div>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide10">
<h1>컨테이너 구조 <span class="sub text-2xl">Container Structure</span></h1>
<div
class="flex flex-wrap justify-around p-12 border-4 border-solid border-[#2496ed] rounded-xl w-4/5 h-[600px] m-auto gap-12"
>
<div
class="border-4 border-solid border-white rounded-lg w-full p-6"
data-id="slide11-container-postgres"
>
<h2 class="text-2xl text-left">PostgreSQL</h2>
<p class="text-left text-xl">
FreeRadius의 인증 기록과 Accounting 기록을 저장한다<br />
<span class="sub">
Stores FreeRadius authentication and accounting records
</span>
</p>
<div class="mt-3 flex gap-6">
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Volume Mounts</h3>
<ul class="text-base w-full">
<li>./data/database​:/data</li>
<li>
./scripts/database/initdb.d<br />:/docker-entrypoint-initdb.d
</li>
</ul>
</div>
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Port Exposure</h3>
<ul class="text-base w-full">
<li>5432</li>
</ul>
</div>
</div>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide10">
<h1>컨테이너 구조 <span class="sub text-2xl">Container Structure</span></h1>
<div
class="flex flex-wrap justify-around p-12 border-4 border-solid border-[#2496ed] rounded-xl w-4/5 h-[600px] m-auto gap-12"
>
<div
class="border-4 border-solid border-white rounded-lg w-full p-6"
data-id="slide11-container-openldap"
>
<h2 class="text-2xl text-left">OpenLDAP</h2>
<p class="text-left text-xl">
FreeRadius을 통해 접근할 수 있는 유저들의 정보를 저장한다<br />
<span class="sub">
Stores user information that can be accessed through FreeRadius
</span>
</p>
<div class="mt-3">
<h3 class="text-xl text-left">Entrypoint</h3>
<ol class="text-base text-left w-full">
<li>기본 Organization과 Readonly User 생성</li>
<li>Samba Schema 적용</li>
</ol>
</div>
<div class="mt-3 flex gap-6">
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Volume Mounts</h3>
<ul class="text-base w-full">
<li>./data/ldap​:/var/lib/openldap</li>
<li>./config/ldap​:/etc/openldap/slapd.d</li>
<li>./data/dhparam​:/dhparam</li>
<li>./scripts/ldap​/assets/custom-scripts</li>
</ul>
</div>
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Port Exposure</h3>
<ul class="text-base w-full">
<li>389</li>
<li>636</li>
</ul>
</div>
</div>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide10">
<h1>컨테이너 구조 <span class="sub text-2xl">Container Structure</span></h1>
<div
class="flex flex-wrap justify-around p-12 border-4 border-solid border-[#2496ed] rounded-xl w-4/5 h-[600px] m-auto gap-12"
>
<div
class="border-4 border-solid border-white rounded-lg w-full p-6"
data-id="slide11-container-freeradius"
>
<h2 class="text-2xl text-left">FreeRadius</h2>
<p class="text-left text-xl">
802.1x 인증을 위한 RADIUS 서버<br />
<span class="sub"> RADIUS server for 802.1x authentication </span>
</p>
<div class="mt-3">
<h3 class="text-xl text-left">Entrypoint</h3>
<ol class="text-base text-left w-full">
<li>기본 설정 덮어씌우기</li>
<li>ldap, counter, sql 모듈 활성화</li>
<li>환경변수에서 설정 적용</li>
</ol>
</div>
<div class="mt-3 flex gap-6">
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Volume Mounts</h3>
<ul class="text-base w-full">
<li>./config/freeradius​:/config</li>
<li>./scripts/freeradius/init.d<br />:/docker-entrypoint.d</li>
<li>
./scripts/freeradius/docker-entrypoint.sh​:/docker-entrypoint.sh
</li>
<li>./data/certs/freeradius​:/certs</li>
</ul>
</div>
<div class="w-1/2 grow-0 shink-0">
<h3 class="text-xl text-left">Port Exposure</h3>
<ul class="text-base w-full">
<li>1812</li>
<li>1813</li>
</ul>
</div>
</div>
</div>
</div>
</section>
<section>
<h1>Done?</h1>
</section>
<section data-auto-animate>
<h1>Nope</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>Password Hash</h1>
<img
class="m-auto"
alt="Supported hash types by authentication methods"
src="/assets/password.jpg"
/>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>Password Hash</h1>
<img
class="m-auto"
alt="Windows Supported hash types"
src="/assets/windows.jpg"
/>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>Password Hash</h1>
<img
class="m-auto"
alt="Supported hash types by authentication methods"
src="/assets/password.jpg"
/>
<p>NT Hash를 따로 저장해야 함</p>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>Password Hash</h1>
<img
class="m-auto"
alt="Supported hash types by authentication methods"
src="/assets/password.jpg"
/>
<p>NT Hash를 따로 저장해야 함</p>
<p>Where? How?</p>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>Password Hash</h1>
<img
alt="List of attributes with password in the attribute name"
src="/assets/attributes.jpg"
/>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>SAMBA?</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>SAMBA?</h1>
<p>윈도우의 파일공유 프로토콜인 SMB 프로토콜을 재 구현한 것</p>
<p class="sub">
Re-implementation of the SMB networking protocol<br />which is a protocol
for Windows file share
</p>
</section>
<section data-auto-animate data-auto-animate-id="slide11">
<h1>SAMBA?</h1>
<img class="w-2/3 m-auto" alt="samba schema" src="/assets/samba.png" />
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h1>동방에 누구?</h1>
<span class="sub text-2xl">Who's in the club room?</span>
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h1>동방에 누구?</h1>
<h2>RADIUS Accounting</h2>
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h2>RADIUS Accounting</h2>
<img class="w-2/3 m-auto" alt="Blank Database" src="/assets/database.png" />
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h2>RADIUS Accounting</h2>
<img class="w-2/3 m-auto" alt="radpostauth" src="/assets/radpostauth.png" />
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h1>Summary</h1>
<div class="flex">
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we know</h2>
</div>
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we don't know</h2>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h1>Summary</h1>
<div class="flex">
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we know</h2>
<ul class="w-full">
<li class="mb-3">
접속 시간<br />
<span class="sub">Access Time</span>
</li>
</ul>
</div>
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we don't know</h2>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h1>Summary</h1>
<div class="flex">
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we know</h2>
<ul class="w-full">
<li class="mb-3">
접속 시간<br />
<span class="sub">Access Time</span>
</li>
<li class="mb-3">
MAC 주소<br />
<span class="sub">MAC Address</span>
</li>
</ul>
</div>
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we don't know</h2>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h1>Summary</h1>
<div class="flex">
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we know</h2>
<ul class="w-full">
<li class="mb-3">
접속 시간<br />
<span class="sub">Access Time</span>
</li>
<li class="mb-3">
MAC 주소<br />
<span class="sub">MAC Address</span>
</li>
<li class="mb-3">
사용자 아이디<br />
<span class="sub">User ID</span>
</li>
</ul>
</div>
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we don't know</h2>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide12">
<h1>Summary</h1>
<div class="flex">
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we know</h2>
<ul class="w-full">
<li class="mb-3">
접속 시간<br />
<span class="sub">Access Time</span>
</li>
<li class="mb-3">
MAC 주소<br />
<span class="sub">MAC Address</span>
</li>
<li class="mb-3">
사용자 아이디<br />
<span class="sub">User ID</span>
</li>
</ul>
</div>
<div class="w-1/2 h-[500px]">
<h2 class="text-2xl text-left">What we don't know</h2>
<ul class="w-full">
<li class="mb-3 text-red-500">
현재 접속 여부<br />
(연결 끊긴 시간)<br />
<span class="sub text-red-400">
Current Connection Status<br />
(Disconnecction Time)
</span>
</li>
</ul>
</div>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide13">
<h1>Ping?</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide13">
<h1>Ping?</h1>
<div class="flex justify-center gap-12">
<p>
IP가 필요함<br />
<span class="sub">Need IP</span>
</p>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide13">
<h1>Ping?</h1>
<div class="flex justify-center gap-12">
<p>
IP가 필요함<br />
<span class="sub">Need IP</span>
</p>
<p>
MAC 주소를 알 수 없음<br />
<span class="sub">Cannot know MAC address</span>
</p>
</div>
</section>
<section data-auto-animate data-auto-animate-id="slide14">
<h1>ARP!</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide14">
<h1>ARP!</h1>
<p>
네트워크 서브넷에 있는 모든 IP에 Ping을 보내고 ARP 테이블을 확인해 보자!
<br />
<span class="sub"
>Ping all the ips in the subnet and check the ARP table!</span
>
</p>
</section>
<section data-auto-animate data-auto-animate-id="slide15">
<h1>Docker</h1>
</section>
<section data-auto-animate data-auto-animate-id="slide15">
<h1>Docker</h1>
<p>
네트워크가 Host와 분리되어 있으며 ARP Cache를 Flush할 수 없다
<br />
<span class="sub"
>Network is seperated with the host and cannot flush the arp cache</span
>
</p>
</section>
<section data-auto-animate data-auto-animate-id="slide15">
<img class="w-2/3 m-auto" alt="Raspberry Pi 3B" src="/assets/rpi3.png" />
</section>
<section data-auto-animate data-auto-animate-id="slide15">
<img class="w-2/3 m-auto" alt="Raspberry Pi 3B" src="/assets/arp.png" />
</section>
<section data-auto-animate data-auto-animate-id="slide15">
<img class="w-2/3 m-auto" alt="Raspberry Pi 3B" src="/assets/service.png" />
</section>
<section data-auto-animate data-auto-animate-id="slide17">
<h1>Demo</h1>
<a href="https://ubucon.codingbear.kr">https://ubucon.codingbear.kr</a>
<img class="mt-6 w-[300px] m-auto" alt="Demo QR" src="/assets/demoqr.png" />
</section>
<section data-auto-animate data-auto-animate-id="slide18">
<h1>Thank you</h1>
</section>
</div>
</div>
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