waterfall
-what are disadvantages?
feedback loop :
- asking stakeholder if it's going alright
plan, implement, test, build, deployment
Scrum . standup meeting .
block : = " I need help"
Scrum disadvantages
Kanban -> doesn't work well if there's changes often
미드 Silicon Valley
AWS - vpc , default vpc, subnet, CIDR , public subnet, private subnet
jump box (bastion host - Medusa, Zilla, Zupakabra) ,
EC2 family(i, d, m, ), AMI , ubuntu/Amazon Linux , keys (SHA256 , PEM, ) , chmod ,
Security Group(source, destionation, port) ,
-> source: 0.0.0.0. (anywhere from internet) or x.x.x.x/32
-> to public IP : xxx.xxx.xxx/32
-> Port : 22
ubuntu. ->. ubuntu@
amazon. ->. ec2-user@.
*what is private IP ?
* what is gateway then?
*what are firewall productrs then?
* difference between encryption and hashing?
* symmetric / asymmetric(public key, private key)