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1、.TCP/UDP端口TCP/UDP端口TCP和UDP都是IP層的傳輸協(xié)議,是IP與上層之間的處理接口。TCP和UDP協(xié)議端口號(hào)被設(shè)計(jì)來區(qū)分運(yùn)行在單個(gè)設(shè)備上的多重應(yīng)用程序的IP地址。由于同一臺(tái)機(jī)器上可能會(huì)運(yùn)行多個(gè)網(wǎng)絡(luò)應(yīng)用程序,所以計(jì)算機(jī)需要確保目標(biāo)計(jì)算機(jī)上接收源主機(jī)數(shù)據(jù)包的軟件應(yīng)用程序的正確性,以及響應(yīng)能夠被發(fā)送到源主機(jī)的正確應(yīng)用程序上。該過程正是通過使用TCP或UDP端口號(hào)來實(shí)現(xiàn)的。在TCP和UDP頭部分,有“源端口”和“目標(biāo)端口”段,主要用于顯示發(fā)送和接收過程中的身份識(shí)別信息。IP地址和端口號(hào)合在一起被稱為“套接字”。IETFIANA定義了三種端口組:公認(rèn)端口(WellKnownPor
2、ts)、注冊(cè)端口(RegisteredPorts)以及動(dòng)態(tài)和/或私有端口(Dynamicand/orPrivatePorts)。·公認(rèn)端口(WellKnownPorts)從0到1023?!ぷ?cè)端口(RegisteredPorts)從1024到49151?!?dòng)態(tài)和/或私有端口(Dynamicand/orPrivatePorts)從49152到65535。部分TCP/UDP端口端口號(hào)協(xié)議服務(wù)名稱別名注釋頁.7TCPecho?Echo7UDPecho?Echo9TCPdiscardsinknullDiscard9UDPdiscardsinknullDiscard13TCPdaytime?Day
3、time13UDPdaytime?Daytime17TCPqotdquoteQuoteoftheday17UDPqotdquoteQuoteoftheday19TCPchargenttytstsourceCharactergenerator19UDPchargenttytstsourceCharactergenerator20TCPftp-data?FileTransfer21TCPftp?FTPControl頁.23TCPtelnet?Telnet25TCPsmtpmailSimpleMailTransfer37TCPtime?Time37UDPtime?Time39UDPrlpres
4、ourceResourceLocationProtocol42TCPnameservernameHostNameServer42UDPnameservernameHostNameServer43TCPnicnamewhoisWhoIs53TCPdomain?DomainName53UDPdomain?DomainNameServer67UDPbootpsdhcpsBootstrapProtocolServer68UDPbootpcdhcpcBootstrapProtocolClient頁.69UDPtftp?TrivialFileTransfer70TCPgopher?Gopher79T
5、CPfinger?Finger80TCPhttpwww,httpWorldWideWeb88TCPkerberoskrb5Kerberos88UDPkerberoskrb5Kerberos101TCPhostnamehostnamesNICHostNameServer102TCPiso-tsap?ISO-TSAPClass0107TCPrtelnet?RemoteTelnetService109TCPpop2postofficePostOfficeProtocol-Version2110TCPpop3postofficePostOfficeProtocol-Version3111TCPs
6、unrpcrpcbindSUNRemoteProcedureCall頁.portmap111UDPsunrpcrpcbindportmapSUNRemoteProcedureCall113TCPauthidenttapAuthenticationSevice117TCPuucp-path?UUCPPathService119TCPnntpusenetNetworkNewsTransferProtocol123UDPntp?NetworkTimeProtocol135TCPepmaploc-srvDCEendpointresolution135UDPepmaploc-srvDCEendpo
7、intresolution137TCPnetbios-nsnbnameNETBIOSNameService137UDPnetbios-nsnbnameNETBIOSNameService138UDPnetbios-dgmnbdatagramNETBIOSDatagramService頁.139TCPnetbios-ssnnbsessionNETBIOSSessionService143TCPimapimap4InternetMess