Semester Conclusion pschiu Computer Center, CS, NCTU This Semester - PowerPoint PPT Presentation

Semester Conclusion pschiu

Computer Center, CS, NCTU This Semester  DNS  Web  Email  PKI  Network 2

Computer Center, CS, NCTU DNS  Not all about yourself  BIND • Child • Slave  Domain Name • Registrar • Root • DNSSEC 3

Computer Center, CS, NCTU Web  HTTP  HTTPS • SSL - Certification Authority Issuer  How to Secure • Avoid data leak 4

Computer Center, CS, NCTU Email  Service • Postfix • Dovecot  Function • SPF  DNS • DKIM  DNS • DMARC  DNS • SASL  Authentication Based 5

Computer Center, CS, NCTU Environment  Hardware issue  Network issue  Environment issue  Every issue makes you lose your point 6

How to make it stronger

Computer Center, CS, NCTU Something you should be considered  Environment Control  DRP • Disaster Recovery Planning  RBS • Remote Backup Site  SLB • Serve Load-Balancing 8

Computer Center, CS, NCTU Environment Control  Temperature  Humidity  Fire Suppression Systems 9

Computer Center, CS, NCTU Disaster Recovery Planning  Frequently Backup • Daily, Monthly, etc.  Backup Strategy • Fully Backup • Incremental Backup • Differential Backup  Restore from Backup • Practice • Always fail on this  Building Remote Backup Site 10

Computer Center, CS, NCTU Remote Backup Site  Distance • More than 50km  Network  Environment • Natural disaster  Brewing water  Debris flow  Earthquake zone • Human Factors  Power circuit  Power generator  Uninterruptible power supply (UPS)  Air Conditioner 11

Computer Center, CS, NCTU Serve Load-Balancing  Traditional SLB • Hardware Failure • Software Failure • Load balancer features  Advance SLB • Geo-location SLB • Global Content Delivery Network (CDN) 12

Computer Center, CS, NCTU Load balancer features  Asymmetric load  HTTP caching  Priority activation  Content filtering  SSL Offload and  HTTP security Acceleration  Priority queuing  Distributed Denial of  Content-aware switching Service  Client authentication  HTTP compression  Programmatic traffic  TCP offload manipulation  TCP buffering  Firewall  Direct Server Return  Intrusion prevention  Health checking system 13

Computer Center, CS, NCTU Human Errors  豬隊友 XD  Training  Alpha Stage  Release Procedure 14

Q & A Any Computer Center, CS, NCTU 15