一个端口就是一个潜在的通信通道，也就是一个入侵通道。对目标计算机进行端口扫描，能得到许多有用的信息。进行扫描的方法很多，可以是手工进行扫描，也可以用端口扫描软件进行，还有就是本站的在线扫描。通过端口扫描，可以得到许多有用的信息，从而发现系统的安全漏洞，或者是系统所开放的服务。常见TCP端口：.cjdk th {background:#FFF;}.cjdk td {background:#FFF;word-break:break-all;}类型端口号注释TCP0ReservedTCP1TCP Port Service MultiplexerTCP2DeathTCP5Remote Job Entry,yoyoTCP7EchoTCP11SkunTCP12BomberTCP16SkunTCP17SkunTCP18消息传输协议，skunTCP19SkunTCP20FTP Data,AmandaTCP21文件传输,Back Construction,Blade Runner,Doly Trojan,Fore,FTP trojan,Invisible FTP,Larva,WebEx,WinCrashTCP22远程登录协议TCP23远程登录（Telnet),Tiny Telnet Server (TCP25电子邮件(SMTP),Ajan,Antigen,Email Password Sender,Happy 99,Kuang2,ProMail trojan,Shtrilitz,Stealth,Tapiras,Terminator,WinPC,WinSpy,Haebu CocedaTCP27AssasinTCP28AmandaTCP29MSG ICPTCP30Agent 40421TCP31Agent 31,Hackers Paradise,Masters Paradise,Agent 40421TCP37Time,ADM wormTCP39SubSARITCP41DeepThroat,ForeplayTCP42Host Name ServerTCP43WHOISTCP44ArcticTCP48DRATTCP49主机登录协议TCP50DRATTCP51IMP Logical Address Maintenance,Fuck Lamers BackdoorTCP52MuSka52,SkunTCP53DNS,Bonk (DOS Exploit)TCP54MuSka52TCP58DMSetupTCP59DMSetupTCP63whois++TCP64Communications IntegratorTCP65TACACS-Database ServiceTCP66Oracle SQL*NET,AL-BarekiTCP67Bootstrap Protocol ServerTCP68Bootstrap Protocol ClientTCP69TFTP,W32.Evala.Worm,BackGate Kit,Nimda,Pasana,Storm,Storm worm,Theef,Worm.Cycle.aTCP70Gopher服务，ADM wormTCP79用户查询（Finger),Firehotcker,ADM wormTCP80超文本服务器（Http),Executor,RingZeroTCP81Chubo,Worm.Bbeagle.qTCP82Netsky-ZTCP88Kerberos krb5服务TCP99Hidden PortTCP102消息传输代理TCP108SNA网关访问服务器TCP109Pop2TCP110电子邮件（Pop3),ProMailTCP113Kazimas,Auther IdnetTCP115简单文件传输协议TCP118SQL Services,Infector 1.4.2TCP119新闻组传输协议（Newsgroup(Nntp)),Happy 99TCP121JammerKiller,Bo jammerkillahTCP123网络时间协议(NTP),Net ControllerTCP129Password Generator ProtocolTCP133Infector 1.xTCP135微软DCE RPC end-point mapper服务TCP137微软Netbios Name服务（网上邻居传输文件使用）TCP138微软Netbios Name服务（网上邻居传输文件使用）TCP139微软Netbios Name服务（用于文件及打印机共享）TCP142NetTaxiTCP143Internet 邮件访问协议版本 4（IMAP4)TCP146FC Infector,InfectorTCP150NetBIOS Session ServiceTCP156SQL服务器TCP161SnmpTCP162Snmp-TrapTCP170A-TrojanTCP177X Display管理控制协议TCP179Border网关协议（BGP)TCP190网关访问控制协议（GACP)TCP194IrcTCP197目录定位服务（DLS)TCP220Internet 邮件访问协议版本 3（IMAP3)TCP256NirvanaTCP315The InvasorTCP371ClearCase版本管理软件TCP389Lightweight Directory Access Protocol (LDAP)TCP396Novell Netware over IPTCP420BreachTCP421TCP WrappersTCP443安全服务（HTTPS）TCP444Simple Network Paging Protocol(SNPP)TCP445Microsoft-DSTCP455Fatal ConnectionsTCP456Hackers paradise,FuseSparkTCP458苹果公司QuickTimeTCP513GrloginTCP514RPC BackdoorTCP531Rasmin,Net666TCP544kerberos kshellTCP546DHCP ClientTCP547DHCP ServerTCP548Macintosh文件服务TCP555Ini-Killer,Phase Zero,Stealth SpyTCP569MSNTCP605SecretServiceTCP606Noknok8TCP660DeepThroatTCP661Noknok8TCP666Attack FTP,Satanz Backdoor,Back Construction,Dark Connection Inside 1.2TCP667Noknok7.2TCP668Noknok6TCP669DP trojanTCP692GayOLTCP707Welchia,nachiTCP777AIM SpyTCP808RemoteControl,WinHoleTCP815Everyone DarlingTCP901Backdoor.DevilTCP911Dark ShadowTCP990ssl加密TCP993IMAPTCP999DeepThroatTCP1000Der SpaeherTCP1001Silencer,WebEx,Der SpaeherTCP1003BackDoorTCP1010DolyTCP1011DolyTCP1012DolyTCP1015DolyTCP1016DolyTCP1020VampireTCP1023Worm.Sasser.e
