PPTslinux视频Network

Network,2020/5/24,马哥教育,page:2,A,2020/5/24,马哥教育,page:3,2020/5/24,马哥教育,page:4,,主机密钥非对称加密SecretkeyPublickey密钥交换,2020/5/24,马哥教育,page:5,中间人攻击,2020/5/24,马哥教育,page:6,root,rootp,s/p,s,2020/5/24,马哥教育,page:7,login,nsswitch/etc/nsswitch.conf,2020/5/24,马哥教育,page:8,2020/5/24,马哥教育,page:9,OSKernelprocess,2020/5/24,马哥教育,page:10,10,进程，内核,线性内存物理内存,mkdir,5ms,用户空间,内核空间,2020/5/24,马哥教育,page:11,进程进程号内存空间用户父进程CPUtime,2020/5/24,马哥教育,page:12,ContextSwitch环境,2020/5/24,马哥教育,page:13,100k*100,内核数据结构taskstructurePPID:PID:7Name:Jerry,3,2020/5/24,马哥教育,page:14,恢复现场,9,2020/5/24,马哥教育,page:15,bug,线性地址，物理地址,2020/5/24,马哥教育,page:16,MemoryManagementUnit,32bit4G（1G）Process10K,MMU,TLB,123,2020/5/24,马哥教育,page:17,processthread,2020/5/24,马哥教育,page:18,2020/5/24,马哥教育,page:19,1000,2020/5/24,马哥教育,page:20,2020/5/24,马哥教育,page:21,2020/5/24,马哥教育,page:22,2020/5/24,马哥教育,page:23,2020/5/24,马哥教育,page:24,2020/5/24,马哥教育,page:25,进程：功能,2020/5/24,马哥教育,page:26,0-139：140,进程状态父子关系优先级关系,2020/5/24,马哥教育,page:27,2020/5/24,马哥教育,page:28,2020/5/24,马哥教育,page:29,1、获得更多的CPU运行时间;2、更优先获得运行的机会；100-139:nice值：优雅的，友好的-2019100139普通用户仅能够调大自己的进程的Nice值；,2020/5/24,马哥教育,page:30,PID：ProcessIDinit:semaphore,2020/5/24,马哥教育,page:31,RAM,ROM,2020/5/24,马哥教育,page:32,/lib/modules/,/usr,/boot,/home,/proc/sys/dev,2020/5/24,马哥教育,page:33,2020/5/24,RHELClustering&StorageManagement,page:33,2020/5/24,马哥教育,page:34,2020/5/24,马哥教育,page:35,Mingettytty1Login,2020/5/24,马哥教育,page:36,makeSUBDIR=arch/makedrivers/net/ethernet/amd/pcnet32.ko,2020/5/24,马哥教育,page:37,makeSUBDIR=arch/,2020/5/24,马哥教育,page:38,2020/5/24,马哥教育,page:39,2020/5/24,马哥教育,page:40,2020/5/24,马哥教育,page:41,2020/5/24,马哥教育,page:42,2020/5/24,马哥教育,page:43,2020/5/24,马哥教育,page:44,2020/5/24,马哥教育,page:45,2020/5/24,马哥教育,page:46,OverridingAutomaticHardwareDetection,2020/5/24,马哥教育,page:47,nashswitch_root,2020/5/24,马哥教育,page:48,Network,电磁,协议：protocol,10Mbps,MByte,2020/5/24,马哥教育,page:49,线路仲裁,A,C,B,D,MAC：MediaAccessControl,MAC地址,首部，报头,CSMA/CD：CarrierSenseMultiAccessCollisionDetection载波侦听多路访问，冲突检测,Ethernet,M,冲突域,2020/5/24,马哥教育,page:50,A,B,C,网桥,2020/5/24,马哥教育,page:51,平面,交换机,A,B,C,M,N,K,2020/5/24,马哥教育,page:52,2020/5/24,马哥教育,page:53,中继器,2020/5/24,马哥教育,page:54,2020/5/24,马哥教育,page:55,总线,HUB,A,B,C,2020/5/24,马哥教育,page:56,A,C,B,D,A,B,2020/5/24,马哥教育,page:57,S1,A,B,M,N,C,S2,D,5,6,7,2020/5/24,马哥教育,page:58,Socket,ip:port,套接字,2020/5/24,马哥教育,page:59,OSI,2020/5/24,马哥教育,page:60,R1,R2,R3,R4,R5,2020/5/24,马哥教育,page:61,/24104,68-2=60001000001-01111110:4,2765-12610000001101111028,91129-19011,2020/5/24,马哥教育,page:62,2020/5/24,马哥教育,page:63,1500BYTE,2020/5/24,马哥教育,page:64,OSI,2020/5/24,马哥教育,page:65,2020/5/24,马哥教育,page:66,2020/5/24,马哥教育,page:67,TCP:TransmissionControlProtocolUDP:UserDatagramProtocol,IP,Ethernet,ppp,ATM,TCP,UDP,tom,jerry,2020/5/24,马哥教育,page:68,2020/5/24,马哥教育,page:69,2020/5/24,马哥教育,page:70,3次握手，4次断开,SYN=1,sn=100,SYN=1,ACK=1,an=101,sn=300,ACK=1,sn=101,an=301,FIN=1,2020/5/24,马哥教育,page:71,路由,UserSpace,KernelSpace,TCP/IP,2020/5/24,马哥教育,page:72,bonding,2020/5/24,马哥教育,page:73,名称,lo:本地回环以太网网卡：ethXpppX,2020/5/24,马哥教育,page:74,程序：指令+数据,text,data+bss,heap:堆,Stack:栈,.sosharedobject,2020/5/24,马哥教育,page:75,/lib,/usr/lib,glibc,apache,2020/5/24,马哥教育,page:76,500软件包管理器打包成一文件：二进制程序，库文件，配置文件，帮助文件生成数据库，追踪所安装的每一个文件,2020/5/24,马哥教育,page:77,rpm,2020/5/24,马哥教育,page:78,BIOS(ROM)MBR(bootloader),LVM,2020/5/24,马哥教育,page:79,rpm:依赖关系xyC/S:Client,Serveryumrepository文件服务ftpwebfile,2020/5/24,马哥教育,page:80,x(10,2),yum:rpm能力Client配置文件yum仓库,rpm:能力,元数据文件,2020/5/24,马哥教育,page:81,RedHatDVDrpm包元数据文件createrepo,2020/5/24,马哥教育,page:82,2020/5/24,马哥教育,page:83,iproute2,2020/5/24,马哥教育,page:84,link,networkdeviceconfigurationiplinksetchangedeviceattributesiplinkshowdisplaydeviceattributes,2020/5/24,马哥教育,page:85,iplinkset,Abbreviations:set,sdevNAME(default)NAMEspecifiesnetworkdevicetooperateonupanddownchangethestateofthedevicetoUPorDOWNmulticastonormulticastoffchangetheMULTICASTflagonthedeviceaddressLLADDRESSchangethestationaddressoftheinterfacebroadcastLLADDRESSmtuNUMBERchangetheMTUofthedevicenameNAMEchangethenameofthedevice,2020/5/24,马哥教育,page:86,iplinkshow,Abbreviations:show,list,lst,sh,ls,ldevNAME(default)NAMEspecifiesthenetworkdevicetoshowIfthisargumentisomittedalldevicesarelisteduponlydisplayrunninginterfaces.,2020/5/24,马哥教育,page:87,ipaddress,protocoladdressmanagementipaddressaddaddnewprotocoladdressipaddressdeletedeleteprotocoladdressipaddressshowlookatprotocoladdressesipaddressflushflushprotocoladdresses,2020/5/24,马哥教育,page:88,ipaddressadd,Abbreviations:add,adevNAMEthenameofthedevicetoaddtheaddresstolocalADDRESS(default)theaddressoftheinterfacebroadcastADDRESSthebroadcastaddressontheinterfacelabelNAMEEachaddressmaybetaggedwithalabelstringscopeSCOPE_VALUEthescopeoftheareawherethisaddressisvalidglobal-theaddressisgloballyvalidsite-(IPv6only)theaddressissitelocallink-theaddressislinklocalhost-theaddressisvalidonlyinsidethishost,2020/5/24,马哥教育,page:89,ipaddressdelete,Abbreviations:delete,del,ddeleteprotocoladdressCoincidewiththeargumentsofipaddraddThedevicenameisarequiredargumentTherestareoptionalIfnoargumentsaregiven,thefirstaddressisdeleted,2020/5/24,马哥教育,page:90,ipaddressshow,Abbreviations:show,list,lst,sh,ls,ldevNAME(default)nameofdevicetoPREFIXonlylistaddressesmatchingthisprefixlabelPATTERNonlylistaddresseswithlabelsmatchingthePATTERNprimaryandsecondaryonlylistprimary(orsecondary)addresses,2020/5/24,马哥教育,page:91,ipaddressflush,ThiscommandhasthesameargumentsasshowThedifferenceisthatitdoesnotrunwhennoargumentsaregivenWiththe-statisticsoption,thecommandbecomesverbose,2020/5/24,马哥教育,page:92,iproute,routingtablemanagementiprouteaddaddnewrouteiproutechangechangerouteiproutereplacechangeoraddnewoneiproutedeletedeleterouteiprouteshowlistroutesiprouteflushflushroutingtablesiproutegetgetasingleroute,2020/5/24,马哥教育,page:93,Routetypes,unicasttherouteentrydescribesrealpathstothedestinationscoveredbytherouteprefixunreachablethesedestinationsareunreachablePacketsarediscardedandtheICMPmessagehostunreachableisgeneratedblackholethesedestinationsareunreachablePacketsarediscardedsilentlyprohibitthesedestinationsareunreachablePacketsarediscardedandtheICMPmessagecommunicationadministrativelyprohibitedisgenerated,2020/5/24,马哥教育,page:94,localthedestinationsareassignedtothishostThepacketsareloopedbackanddeliveredloca