# 네트워크장비 취약점 진단 분석 평가 방법

## 네트워크장비 취약점 진단 분석 평가 방법&#x20;

![그림. 네트워크장비 취약점 진단 리스트   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FkyH9Rs4JrqQNHvnHlCzK%2Fimage.png?alt=media\&token=3580528b-ebf7-4c15-9161-0bb9462880b0)

## 1. 계정 관리

### 1.1 패스워드 설정   &#x20;

![그림. 1.1 패스워드 설정   .](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FmB7xXc8fF6QHA6wfUrot%2Fimage.png?alt=media\&token=0b636085-7923-4197-9202-b43ae6f871d0)

![그림. 1.1 패스워드 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FIiQgdXfrKgR09deaASGn%2Fimage.png?alt=media\&token=b2cfe46d-7f32-47c6-92aa-1a6924640f14)

![그림. 1.1 패스워드 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FXVW06BHk0Hk6agqt8uj5%2Fimage.png?alt=media\&token=cf68d6e3-e7d0-418e-931a-e1fd1b1a4d33)

![그림. 1.1 패스워드 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FlVi1imHYZs1Z2kAdB1wu%2Fimage.png?alt=media\&token=3e327b55-ef08-4590-83e9-9ab0653b20e3)

### 1.2 패스워드 복잡성 설정   &#x20;

![그림. 1.2 패스워드 복잡성 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FGF6eEbRagw31aQEI09PR%2Fimage.png?alt=media\&token=26e8db3e-5655-4308-b504-9cf893ff443c)

![그림. 1.2 패스워드 복잡성 설정  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FqavjKIYmVqFTzjTEgTtn%2Fimage.png?alt=media\&token=33e0709b-ba46-43e5-80a4-2b34d75dac75)

### 1.3 암호화 된 패스워드 사용   &#x20;

![그림. 1.3 암호화 된 패스워드 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F6ptsckN2Y99RpYukk3a2%2Fimage.png?alt=media\&token=c81b07e6-5295-418a-ba8d-a5ce3442d057)

![그림. 1.3 암호화 된 패스워드 사용  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F76r7lmLJnsaTQ8oIyc3Q%2Fimage.png?alt=media\&token=853e0bb4-ff60-406c-82bd-4fd9b358d60c)

### 1.4 사용자 명령어별 권한 수준 설정     &#x20;

![그림. 1.4 사용자 명령어별 권한 수준 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FGDCMIgkLup0fa0ijs19S%2Fimage.png?alt=media\&token=b7d2551b-a97e-463e-8253-a2cd58967da3)

![그림. 1.4 사용자 명령어별 권한 수준 설정](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FNdrH4NDdWUQhTbSJEIxo%2Fimage.png?alt=media\&token=bc6c711c-697a-4018-8e56-d0834ee6af4c)

![그림. 1.4 사용자 명령어별 권한 수준 설정](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F0gWT7tAR3OIPGFjrqsAn%2Fimage.png?alt=media\&token=ebf63f52-7075-4021-8189-ba57e35c2ab3)

![그림. 1.4 사용자 명령어별 권한 수준 설정](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fehv6DgEV3R0dI49cEPib%2Fimage.png?alt=media\&token=f051b285-510b-4d53-b780-f7bf7d07aa12)

## 2. 접근 관리  &#x20;

### 2.1 VTY 접근(ACL) 설정 &#x20;

![그림. 2.1 VTY 접근(ACL) 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FKayT2HHuLG1gSiPPDAKq%2Fimage.png?alt=media\&token=880f1705-dc4c-480a-b763-2b753e6ba525)

![그림. 2.1 VTY 접근(ACL) 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fv2OljF4DRSYEHEOz9uBc%2Fimage.png?alt=media\&token=eb620863-aa70-42c6-9889-c21114b48b03)

![그림. 2.1 VTY 접근(ACL) 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fzo26hmW0fgBqw0Rm4Rhs%2Fimage.png?alt=media\&token=f5dcf814-0798-4122-a088-5f5577b511cf)

![그림. 2.1 VTY 접근(ACL) 설정  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FbLaVTFvvZMBlEm1gG2zn%2Fimage.png?alt=media\&token=70c116da-4d78-4c98-bf79-9e9301ddb2a8)

### 2.2 Session Timeout 설정 &#x20;

![그림. 2.2 Session Timeout 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FZQ3N81v9snmQLK36XvSg%2Fimage.png?alt=media\&token=108b2953-c26d-4d07-8f34-ea6ce4b03790)

![그림. 2.2 Session Timeout 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FADbQnYZUcvNsyCzkOQbF%2Fimage.png?alt=media\&token=15249ec8-31f8-483f-9bf6-fcf5b0d9e0cd)

### 2.3 VTY 접속 시 안전한 프로토콜 사용     &#x20;

![그림. 2.3 VTY 접속 시 안전한 프로토콜 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FvyRiEwdaWtg5A5sixcwZ%2Fimage.png?alt=media\&token=1a35503c-2683-4509-b4d6-160d62c5a66b)

![그림. 2.3 VTY 접속 시 안전한 프로토콜 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F1BJHX06Q4cF9vMNdKRWc%2Fimage.png?alt=media\&token=2a40529e-f0d1-4028-a5fc-f2b4c289b7d0)

![그림. 2.3 VTY 접속 시 안전한 프로토콜 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fl4tvljEALctwyQH0UeEm%2Fimage.png?alt=media\&token=8f3768f4-8bec-4d7a-be86-91e257bd8585)

### 2.4 불필요한 보조 입출력 포트 사용 금지    &#x20;

![그림. 2.4 불필요한 보조 입출력 포트 사용 금지    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FP3GYiu0jq2Q1DurTTiIj%2Fimage.png?alt=media\&token=d41cc60f-2f07-4153-9a40-3be821a4c147)

![그림. 2.4 불필요한 보조 입출력 포트 사용 금지   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fw64wseOpDvX0yU1DrIe6%2Fimage.png?alt=media\&token=eeafb25b-dd78-49de-ac8c-e200b311b612)

### 2.5 로그온 시 경고 메시지 설정    &#x20;

![그림. 2.5 로그온 시 경고 메시지 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fug8u3r85zZJLVqqckNhD%2Fimage.png?alt=media\&token=8a39aa93-1278-497f-ab75-6d4014791b76)

![그림. 2.5 로그온 시 경고 메시지 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FBiBCMd1Bc3RzMvuL1f2f%2Fimage.png?alt=media\&token=a57b194d-23fc-4dc7-9ee9-c4e1bccee1ba)

## 3. 패치 관리  &#x20;

### 3.1 최신 보안 패치 및 벤더 권고사항 적용       &#x20;

![그림. 3.1 최신 보안 패치 및 벤더 권고사항 적용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FmZFLiULq1wfmNloi76rT%2Fimage.png?alt=media\&token=7f213c8a-1aa3-43a9-9ce1-e1a3d3379b5c)

![그림. 3.1 최신 보안 패치 및 벤더 권고사항 적용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FKckH7SMpKv64B0BmJjjb%2Fimage.png?alt=media\&token=0db61304-8b33-4958-9639-3b33b1e71979)

## 4. 로그 관리 &#x20;

### 4.1 원격 로그서버 사용   &#x20;

![그림. 4.1 원격 로그서버 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FKKmVXn9GCpaljlncQUAu%2Fimage.png?alt=media\&token=8190254a-ce83-4d8e-a10a-542727074326)

![그림. 4.1 원격 로그서버 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FArdAKeJrW9HBuxigFsis%2Fimage.png?alt=media\&token=cd6cf2e7-00b5-4da4-86cf-4a013c68effd)

![그림. 4.1 원격 로그서버 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FE3WuufuAAXTY8DDGbDTZ%2Fimage.png?alt=media\&token=47d867cc-d652-455b-8bac-73dc01987584)

### 4.2 로깅 버퍼 크기 설정  &#x20;

![그림. 4.2 로깅 버퍼 크기 설정    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FSGYmsZ3vPHQw2B6Az6o0%2Fimage.png?alt=media\&token=d5d81d46-c484-4cea-9c11-b26d73389c68)

![그림. 4.2 로깅 버퍼 크기 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F7zOHtO5LIiuDsq5ZrE88%2Fimage.png?alt=media\&token=9cb526f1-f7ad-4df8-9e66-d5c59fcde711)

### 4.3 정책에 따른 로깅 설정    &#x20;

![그림. 4.3 정책에 따른 로깅 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FnbJoWdw0Unwye8V9mgqn%2Fimage.png?alt=media\&token=4c2caa22-8a81-4320-97b7-c35b36bf940c)

![그림. 4.3 정책에 따른 로깅 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fe0gVUxqmwxnKtmKc6Cv0%2Fimage.png?alt=media\&token=03e13e3d-ebd8-4c40-9447-d8299e3a5b44)

### 4.4 NTP 서버 연동 &#x20;

![ 그림. 4.4 NTP 서버 연동   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FBPbZNFmXeD7QJE1voPi8%2Fimage.png?alt=media\&token=78e8a107-45aa-4cbf-b742-4f3dcd37ba88)

![그림. 4.4 NTP 서버 연동   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F49vJy2AW7RkWASiI8m5D%2Fimage.png?alt=media\&token=7c717556-06a6-4d76-b03a-34125ea9e576)

### 4.5 timestamp 로그 설정 &#x20;

![그림. 4.5 timestamp 로그 설정           ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FyzZbTsLxuqfQyiWw72X5%2Fimage.png?alt=media\&token=37eaddec-c3d6-4f7a-9a75-1b85e31cc715)

## 5. 기능 관리&#x20;

### 5.1 SNMP 서비스 확인    &#x20;

![그림. 5.1 SNMP 서비스 확인   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FMBU3SZoiTU6skcWUsskl%2Fimage.png?alt=media\&token=ff30292e-8454-4a51-add4-8c962e9fed0e)

![그림. 5.1 SNMP 서비스 확인   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F92XD51X3RlFx6yiERhfT%2Fimage.png?alt=media\&token=23e3fe78-7476-4ec2-b574-0688a4757f2f)

### 5.2 SNMP community string 복잡성 설정  &#x20;

![그림. 5.2 SNMP community string 복잡성 설정  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FgxsrxnRLG4OeOSCebgoi%2Fimage.png?alt=media\&token=47c10220-2ca6-47fb-bbb0-16e130038e70)

![그림. 5.2 SNMP community string 복잡성 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FbuoBEQl2r0xxQolmy75C%2Fimage.png?alt=media\&token=caab6ee1-d1bf-4870-80af-becf9c6bc641)

### 5.3 SNMP ACL 설정 &#x20;

![그림. 5.3 SNMP ACL 설정  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F5tegINPt2X3RSNuN1hBu%2Fimage.png?alt=media\&token=824ede93-d295-4200-aacf-c5a8ccc208d8)

![그림. 5.3 SNMP ACL 설정  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FVFg9OGBJPWfG2JUg6buD%2Fimage.png?alt=media\&token=a53acd24-5ffb-4edb-9116-5bc9721810fd)

![그림. 5.3 SNMP ACL 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FrZideUH1YjW10189FjPJ%2Fimage.png?alt=media\&token=858e6989-bf4b-4a00-8d79-c27c1fa4fa0d)

### 5.4 SNMP 커뮤니티 권한 설정   &#x20;

![그림. 5.4 SNMP 커뮤니티 권한 설정  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FNAw7mjilDkgWvIMq1BXU%2Fimage.png?alt=media\&token=4fd04bef-9aef-473e-9c45-434838163af0)

![ 그림. 5.4 SNMP 커뮤니티 권한 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F8MvbfpzwyqBN2QI9eUTz%2Fimage.png?alt=media\&token=6945fa9d-e5d2-4d86-9b04-59fa921ec0cc)

![그림. 5.4 SNMP 커뮤니티 권한 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FWwqBhUcCIZ8nep5vcr7b%2Fimage.png?alt=media\&token=d492bf4a-53c2-4c09-bcd7-cd54fb9181dc)

### 5.5 TFTP 서비스 차단 &#x20;

![그림. 5.5 TFTP 서비스 차단    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FrXvLP1qsl1rg5o0xWFdU%2Fimage.png?alt=media\&token=a12dcc95-2ddc-4be7-b758-50a25de496a9)

### 5.6 Spoofing 방지 필터링 적용 또는 보안장비 사용      &#x20;

![그림. 5.6 Spoofing 방지 필터링 적용 또는 보안장비 사용  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F87erdENFGkh8UoFk29ig%2Fimage.png?alt=media\&token=b48ba75d-0e7c-4f35-a03b-873220916bf3)

![그림. 5.6 Spoofing 방지 필터링 적용 또는 보안장비 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FkZ6yciiQHQFEjoPvh7nb%2Fimage.png?alt=media\&token=710f314a-a0eb-4160-bcb9-c43be4624638)

![그림. 5.6 Spoofing 방지 필터링 적용 또는 보안장비 사용  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FvSvPyhe8YmcJYPq3Dbj3%2Fimage.png?alt=media\&token=6eef040e-58f0-4db2-8a53-a3006bec0412)

### 5.7 DDoS 공격 방어 설정 또는 DDoS 장비 사용      &#x20;

![그림. 5.7 DDoS 공격 방어 설정 또는 DDoS 장비 사용   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F4Wcdc6pAguGgH0vFJQkB%2Fimage.png?alt=media\&token=1d011399-43de-47ad-8032-25853f513f23)

![그림. 5.7 DDoS 공격 방어 설정 또는 DDoS 장비 사용  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FS8SpQAKNAbHpt3biQyN8%2Fimage.png?alt=media\&token=25d7b3d7-349b-464f-9d4f-31458ae00f50)

### 5.8 사용하지 않는 인터페이스의 Shutdown 설정    &#x20;

![그림. 5.8 사용하지 않는 인터페이스의 Shutdown 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fz4HI87Z2AdGYnZSzRjz0%2Fimage.png?alt=media\&token=a38696bf-d4c8-47bb-bbfe-453853a4cc77)

![그림. 5.8 사용하지 않는 인터페이스의 Shutdown 설정   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fs9AQvvq9dmCLNF11up6C%2Fimage.png?alt=media\&token=c2126926-4fa7-4c87-b7c7-38753da0d681)

### 5.9 TCP Keepalive 서비스 설정   &#x20;

![ 그림. 5.9 TCP Keepalive 서비스 설정    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FwilJlRmJsPn6z5Bcdq6o%2Fimage.png?alt=media\&token=4b6ec8d3-0749-456b-bc90-6dbb640243ab)

### 5.10 Finger 서비스 차단  &#x20;

![그림. 5.10 Finger 서비스 차단  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FXulwDsbf3JGl7H7Vt5fW%2Fimage.png?alt=media\&token=dd8abdf9-2011-452a-996f-096140be93cf)

![그림. 5.10 Finger 서비스 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FGh1TjROzm3Zl2sgMwdIU%2Fimage.png?alt=media\&token=77e767d9-7d99-420a-9d60-e034006e6b25)

### 5.11 웹 서비스 차단  &#x20;

![그림. 5.11 웹 서비스 차단    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FpsuWyNA1Lq1q70WcCRWZ%2Fimage.png?alt=media\&token=ec2f9a3c-92fd-4f69-8a64-11d1e538ea81)

![그림. 5.11 웹 서비스 차단    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F843CQfhZrwLxdMbMRAEJ%2Fimage.png?alt=media\&token=a828d849-f7cc-4523-9107-cfab527bed0c)

### 5.12 TCP/UDP Small 서비스 차단 &#x20;

![그림. 5.12 TCP/UDP Small 서비스 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FCuFuZrza7qHgXGaFghXt%2Fimage.png?alt=media\&token=7e69e790-308d-4534-bbee-e12c1a749fe7)

### 5.13 Bootp 서비스 차단 &#x20;

![그림. 5.13 Bootp 서비스 차단  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FUAQOtHlRcPgwxuMoYsIR%2Fimage.png?alt=media\&token=46f997c9-7769-4385-b731-6b7270d8e8ba)

![그림. 5.13 Bootp 서비스 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FhMhBZrEeWT5EZrEs1Nok%2Fimage.png?alt=media\&token=f3b137a4-2ad7-4912-869f-8c0bc57aca90)

### 5.14 CDP 서비스 차단  &#x20;

![그림. 5.14 CDP 서비스 차단  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FUfwAJVNa74B0aOtkqzMv%2Fimage.png?alt=media\&token=c0a36027-9c02-4c52-9fbc-a2ed5deac6bf)

### 5.15 Directed-broadcast 차단 &#x20;

![그림. 5.15 Directed-broadcast 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FRemkpuIyRRlyimlPbod9%2Fimage.png?alt=media\&token=9c99a62b-9058-42c4-b297-363ac0bfa3ca)

![그림. 5.15 Directed-broadcast 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FEhgUkK927bMkbdBIP0Hf%2Fimage.png?alt=media\&token=f1a42025-02c3-47dc-bf9a-36820df7fd5d)

### 5.16 Source 라우팅 차단  &#x20;

![그림. 5.16 Source 라우팅 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FWH8PTDzphp5HFmdlGf3s%2Fimage.png?alt=media\&token=20febdad-00ef-49d1-8ad1-1d5751052b4c)

### 5.17 Proxy ARP 차단 &#x20;

![그림. 5.17 Proxy ARP 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FHP6ngNXC7Uzfre82oLJO%2Fimage.png?alt=media\&token=e89ad97e-e0af-4b01-9930-5cb7d1fb7295)

### 5.18 ICMP unreachable, Redirect 차단 &#x20;

![그림. 5.18 ICMP unreachable, Redirect 차단    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FegUCF2WbbMAoOqflc9aw%2Fimage.png?alt=media\&token=3395dd97-a8ef-4f80-8fad-55071100c5a3)

![그림. 5.18 ICMP unreachable, Redirect 차단  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F6fOiyxHwzCNvolvpg2ac%2Fimage.png?alt=media\&token=e031ebd7-cc6c-439e-98ef-fe2a2c520755)

### 5.19 identd 서비스 차단  &#x20;

![그림. 5.19 identd 서비스 차단    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FgfNTdBhIUJgOE5E3Qp9A%2Fimage.png?alt=media\&token=45082273-6f41-47b7-9bc8-53dfc21fd05a)

### 5.20 Domain lookup 차단 &#x20;

![그림. 5.20 Domain lookup 차단  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FSe4LoTQpMkKynAN6NJxh%2Fimage.png?alt=media\&token=6ed83f4d-45aa-45a4-bd8f-90afea68f935)

### 5.21 PAD 차단 &#x20;

![그림. 5.21 PAD 차단   ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2Fd32Pcd6vhy56BKuXP0hb%2Fimage.png?alt=media\&token=16efe846-b6ff-44b5-9ef8-b16c3f0251f5)

### 5.22 mask-reply 차단  &#x20;

![그림. 5.22 mask-reply 차단  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FKGUILiSMFAJghrzR8LiF%2Fimage.png?alt=media\&token=b22d06ae-64b1-46da-b4b1-54d8d9ba65b1)

### 5.23 스위치, 허브 보안 강화 &#x20;

![그림. 5.23 스위치, 허브 보안 강화    ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FybhbBzD5rufgdEqK3Oix%2Fimage.png?alt=media\&token=4e3a9fd2-8a00-48ee-a1a2-2b19bfc05cc8)

![그림. 5.23 스위치, 허브 보안 강화  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FmXAuFatDUzOhCSkEf732%2Fimage.png?alt=media\&token=070c2355-3542-4fd9-ab5a-18655391605c)

![그림. 5.23 스위치, 허브 보안 강화  ](https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FuqBTYFC7KTIfqm47BG1D%2Fimage.png?alt=media\&token=b27d3974-efe0-4ce6-9d20-53f75cb6ab84)

### 취약점 진단 서적 -Coupang-

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h3>웹 보안 담당자를 위한 취약점 진단 스타트 가이드 [쿠팡]</h3></td><td><ul><li>ISBN: 9791158390556</li><li>저자: 우에노 센 저/양현 역</li><li>옮긴이/역자: 양현</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FbhW31HL7hbm69IkfII5g%2F%EC%B7%A8%EC%95%BD%EC%A0%90%20%EC%A7%84%EB%8B%A8%20%EC%8A%A4%ED%83%80%ED%8A%B8%20%EA%B0%80%EC%9D%B4%EB%93%9C.JPG?alt=media&#x26;token=a95bb9d0-ac21-44fd-8163-f5c768f74737">취약점 진단 스타트 가이드.JPG</a></td><td><a href="https://link.coupang.com/a/WozcG">https://link.coupang.com/a/WozcG</a></td></tr><tr><td><h3>해킹 패턴과 시스템 취약점 진단 [쿠팡]</h3></td><td><ul><li>ISBN: 9791195266715</li><li>저자: 김광진</li><li>도서형태: 단행본</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F3LE5JL2nK7qji0v4osWX%2F%ED%95%B4%ED%82%B9%20%ED%8C%A8%ED%84%B4%EA%B3%BC%20%EC%8B%9C%EC%8A%A4%ED%85%9C%20%EC%B7%A8%EC%95%BD%EC%A0%90%20%EC%A7%84%EB%8B%A8.JPG?alt=media&#x26;token=d223ecdf-021b-484b-ba8e-082fa1ef6d52">해킹 패턴과 시스템 취약점 진단.JPG</a></td><td><a href="https://link.coupang.com/a/Woz7U">https://link.coupang.com/a/Woz7U</a></td></tr><tr><td><h3>누구나 쉽게 따라 하는 웹 취약점 진단 기술 [쿠팡]</h3></td><td><ul><li>ISBN: 9791156342489</li><li>저자: 여동균 저</li><li>도서형태: 단행본</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F77JOhBAkihtyDlm9kr54%2F%EC%9B%B9%20%EC%B7%A8%EC%95%BD%EC%A0%90%20%EC%A7%84%EB%8B%A8%20%EA%B8%B0%EC%88%A0.JPG?alt=media&#x26;token=6ef1e56e-818b-48af-9c23-9bac019afcb7">웹 취약점 진단 기술.JPG</a></td><td><a href="https://link.coupang.com/a/WoAK7">https://link.coupang.com/a/WoAK7</a></td></tr><tr><td><h3>안드로이드 모바일 앱 모의해킹 [쿠팡]</h3></td><td><ul><li>ISBN: 9788960779310</li><li>시리즈: 에이콘 해킹과 보안 시리즈</li><li>도서형태: 단행본</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FiX4pP0UIzJfsmkpy6tWK%2F%EC%95%88%EB%93%9C%EB%A1%9C%EC%9D%B4%EB%93%9C%20%EB%AA%A8%EB%B0%94%EC%9D%BC%20%EC%95%B1%20%EB%AA%A8%EC%9D%98%ED%95%B4%ED%82%B9.JPG?alt=media&#x26;token=96211d83-f8d9-46d0-a8ac-97ef358f07ec">안드로이드 모바일 앱 모의해킹.JPG</a></td><td><a href="https://link.coupang.com/a/WoBFP">https://link.coupang.com/a/WoBFP</a></td></tr><tr><td><h3>Nmap NSE를 활용한 보안 취약점 진단 [쿠팡]</h3></td><td><ul><li>ISBN: 9788960774933</li><li>저자: 조정원</li><li>시리즈: 에이콘 해킹과 보안 시리즈</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FSLKchEWf5dExe7f4XU4A%2FNmap%20NSE%EB%A5%BC%20%ED%99%9C%EC%9A%A9%ED%95%9C%20%EB%B3%B4%EC%95%88%20%EC%B7%A8%EC%95%BD%EC%A0%90%20%EC%A7%84%EB%8B%A8.JPG?alt=media&#x26;token=a25d6d8d-0f81-4157-b0ab-f21369c67f21">Nmap NSE를 활용한 보안 취약점 진단.JPG</a></td><td><a href="https://link.coupang.com/a/WoCau">https://link.coupang.com/a/WoCau</a></td></tr><tr><td><h3>보안 위협 예측 [쿠팡]</h3></td><td><ul><li>ISBN: 9788960779464</li><li>저자: 존 피어츠,데이비드 디센토,이인 데이비슨,윌 그레...</li><li>옮긴이/역자: 윤영빈</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FGLQnTsek90Iu5V2vdEEL%2F%EB%B3%B4%EC%95%88%20%EC%9C%84%ED%98%91%20%EC%98%88%EC%B8%A1.JPG?alt=media&#x26;token=e13b8637-5e10-43c8-9fd3-cd84c305e47a">보안 위협 예측.JPG</a></td><td><a href="https://link.coupang.com/a/WoCNK">https://link.coupang.com/a/WoCNK</a></td></tr><tr><td><h3>팀장부터 CEO까지 알아야 할 기업 정보보안 가이드 [쿠팡]</h3></td><td><ul><li>저자: 강은성</li><li>ISBN: 9791162245064</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FHWChcWFVwDc5dgBrn6PS%2F%ED%8C%80%EC%9E%A5%EB%B6%80%ED%84%B0%20CEO%EA%B9%8C%EC%A7%80%20%EC%95%8C%EC%95%84%EC%95%BC%20%ED%95%A0%20%EA%B8%B0%EC%97%85%20%EC%A0%95%EB%B3%B4%EB%B3%B4%EC%95%88%20%EA%B0%80%EC%9D%B4%EB%93%9C.JPG?alt=media&#x26;token=218c6d8d-e044-4b81-94bd-ebd816735d39">팀장부터 CEO까지 알아야 할 기업 정보보안 가이드.JPG</a></td><td><a href="https://link.coupang.com/a/WoDuB">https://link.coupang.com/a/WoDuB</a></td></tr><tr><td><h3>보안컨설팅과 보안실무 [쿠팡]</h3></td><td><ul><li>발행언어: 한국어</li><li>쿠팡상품번호: 5379820663 - 7988247650</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2FP6Pl2619JAmxIPOGYYZA%2F%EB%B3%B4%EC%95%88%EC%BB%A8%EC%84%A4%ED%8C%85%EA%B3%BC%20%EB%B3%B4%EC%95%88%EC%8B%A4%EB%AC%B4.JPG?alt=media&#x26;token=f4834f53-af3a-4c62-810e-f70e2dc44e0c">보안컨설팅과 보안실무.JPG</a></td><td><a href="https://link.coupang.com/a/WoDP5">https://link.coupang.com/a/WoDP5</a></td></tr><tr><td><h3>실전 정보기술 컨설팅 [쿠팡]</h3></td><td><ul><li>ISBN: 9788978125147</li><li>대학 출판부: 국민대학교</li><li>쿠팡상품번호: 7124174011 - 17844911530</li></ul></td><td><a href="https://1567468684-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fs0j0HSGvadiD7HlWa44X%2Fuploads%2F7ExJ1HhL6ZQ5CKztpEFq%2F%EC%8B%A4%EC%A0%84%20%EC%A0%95%EB%B3%B4%EA%B8%B0%EC%88%A0%20%EC%BB%A8%EC%84%A4%ED%8C%85.JPG?alt=media&#x26;token=86910861-05ca-414e-bf61-8649d8b72c35">실전 정보기술 컨설팅.JPG</a></td><td><a href="https://link.coupang.com/a/WoEcC">https://link.coupang.com/a/WoEcC</a></td></tr></tbody></table>

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