ddos: http floods (waf)
XSS, SQL injection: (waf)
[AWS WAF(7L), Shield(3, 4L)]
3, 4 Layer: (`udp floods, ssl abuse, udp reflection, sloworis, syn floods`)
7 Layer: (`xss, http floods, SQL injection, Application exploits, Crawlers, Content scrapers, scanners/probes`)
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[AWS 보안 툴](https://aws.amazon.com/ko/products/security/?nc1=h_ls)
[AWS 유튜브 멀티 어카운트](https://www.youtube.com/watch?v=3QJ-RA5R0Jk)
[AWS GuardDuty](https://d1.awsstatic.com/webinars/jp/pdf/services/20180509_AWS-BlackBelt_Amazon-GuardDuty.pdf)
[serverless 무료 redis (upstash)](https://upstash.com/)
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VPC 접속을 위한 IAM 역할
AWSLambdaVPCAccessExecutionRole
lambda -> VPC
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```
다수의 로그파일에서 검색
find /path/to/log/로그.* | xargs zcat | grep -F "찾을 거"
```
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```
부하 테스트
ab -n 3000 -c 1 https://URL/
-n 성능을 검사하기위해 보내는 요청수
-c 동시에 요청하는 요청수
```
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