要学习的知识
DNS:域名解析,BIND:Berkeley Internet Name Domain
SSL/TLS:http-->https,OpenSSL,CA,Digital Certificate,PKI
HTTP:http协议,Apache,LAMP,Nginx(Engeer X) ,LNMP,MySQL,PHP,varnish(与Web缓存相关的)
CDN:DNS(view)+varnish
File Server:NFS,SMB/CIFS,FTP
Netfilter(文件过滤器):iptables(filter,nat,mangle,raw) ;tcp warpper
NSSwitch:framework,platform;PAM
SMTP/POP3/IMAP4:Mail Server
SElinux: Security Enhanced Linux
C2-->SElinux-->B2
MySQL:
DNS :Domain Name Service
域名:www.dearamaze.com(主机,Full Qualified Domain Name ,完全限定域名)
DNS:名称解析,Name Resolving,名称转换(背后有查询过程,数据库)
FQDN<-->IP
NSSwitch:libnss_files.so libnss_dns.so
hosts:files dns
file:/etc/hosts
dns:DNS
stub resolver:名称解析器
hosts:
IPADDR FQDN Ailances
172.16.0.1 www.dearamaze.com fdl
IANA:IP,FQDN
ICANN:
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