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繥һԭͷʲô
 ͷ֣20 - ʱ䣺2008-5-15 19:20
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ߣ Ҷ - ϰħʦ  Ѵ
أhttp://download.csdn.net/source/274376 
繥ԭ 

1.1 TCP SYNܾ񹥻 

һ£һTCPӵĽҪֵḶ́ 

1 ĿһTCP SYNģ 

2 ĿյSYNĺڴдTCPӿƿ飨TCBȻ߻һTCP ACKģȴߵĻӦ 

3 յTCP ACKĺٻӦһACKģTCPӾͽˡ 
̣һЩĹ߿ԽνTCP SYNܾ񹥻 

1 ĿһTCP SYNģ 

2 Ŀյĺ󣬽TCPӿƽṹTCBӦһACKȴߵĻӦ 

3 ĿӦACKģĿһ´ڵȴ״̬ 
ԿĿյTCP 
SYNģûյߵĵACKӦһֱȴ״̬İܶ࣬ĿԴTCBƽṹTCBһ޵ģľӦTCP 


1.2 ICMPˮ 

£Ϊ˶ϣһЩϳ򣬱PINGȣᷢICMPӦģICMP ECHOռյICMP 
ECHO󣬻ӦһICMP ECHO 
ReplyġҪCPUģе»ĵԴ紦ƬʱĿʹICMP 
ECHOģICMPˮĿæڴЩECHOģ޷ݱģҲһ־ܾ񹥻DOS 

1.3 UDPˮ 

ԭICMPˮƣͨʹUDPĸĿĿæڴЩUDPĶ޷ıġ 


1.4 ˿ɨ 

TCPЭ淶һ̨յһTCPӽģTCP SYNʱĴ 

1 TCP˿ǿŵģӦһTCP ACKģTCPӿƽṹTCB 
2 TCP˿ûпţӦһTCP RSTTCPͷеRST־Ϊ1ģ߷ö˿ûпš 

ӦأIPЭջյһUDPģ´ 

1 ñĵĿ˿ڿţѸUDPϲЭ飨UDPӦκαģϲЭݴӦı⣩ 
2 ñĵĿ˿ûпţ߻ӦһICMPɴﱨģ߷߼UDPĵĶ˿ڲɴ 

ԭ߼ͨͺʵıģжĿЩTCPUDP˿ǿŵģ£ 

1 ˿ںŴ0ʼεTCP SYNUDPģ˿ںһ16ص֣Ϊ65535ޣ 
2 յTCPĵRSTģUDPĵICMPɴﱨģ˵˿ûпţ 
3 ෴յTCP 
SYNĵACKģûнյκԸUDPĵICMPģ˵TCP˿ǿŵģUDP˿ڿܿţΪеʵпܲӦICMPɴﱨģʹUDP˿ûпţ 


ȥԺ׵жϳĿЩTCPUDP˿ڣȻԶ˿ڵľ֣һνĶ˿ɨ蹥 

1.5 ƬIPĹ 

Ϊ˴һIPģIPЭջҪ·ӿڵMTUԸIPĽзƬͨʵIPͷеķƬָʾֶΣռԺ׵İЩIPƬװ 

ĿڴЩƬĵʱ򣬻ȵķƬĻȻһֱȴķƬģ̻ĵһڴ棬ԼһЩIPЭջݽṹ߸ĿֻһƬƬģеķƬģ߼һֱȴֱһڲʱʱ߷˴ķƬģͻĵĿԴ²ӦIPģҲһDOS 



1.6 SYNغFINͬʱ 

TCPĵıͷУм־ֶΣ 
1 SYNӽ־TCP SYNľǰ־Ϊ1ӣ 
2 ACKӦ־һTCPУ˵һģTCP SYN⣬бĶøֶΣΪһĵӦ 
3 FIN־һ̨յһFIN־TCPĺ󣬻TCPӣ 
4 RSTλ־IPЭջյһĿ˿ڲڵTCPĵʱ򣬻ӦһRST־õıģ 
5 PSH֪ͨЭջTCPύϲ 

£SYN־־FIN־Ӳ־ǲͬʱһTCPеġRFCҲûй涨IPЭջδĻαģˣϵͳЭջյıĺĴʽҲͬ߾ͿͨSYNFINͬʱõıģжϲϵͳͣȻԸòϵͳнһĹ 


1.7 ûκα־TCPĹ 

£κTCPĶSYNFINACKRSTPSH־еһ־һTCPģTCPģSYN־ĶACK־еЭջļ裬ûԲκα־TCPĵĴ̣ˣЭջյıģܻص㣬Ŀй 


1.8 FIN־ȴûACK־TCPĹ 

£ACK־ڳ˵һģSYNģ⣬еıĶãTCPӲģFIN־õıģеĹȴĿFIN־ȴûACK־TCPģܵĿ 


1.9 ֮PING 

TCP/IP淶ҪIPĵĳһΧڣ磬064KеĹĿ64KȵPINGģĿIPЭջ 


1.10 ַ²⹥ 

˿ɨ蹥ƣͨĿַ仯ĴICMP ECHOģжĿǷڡյ˶ӦECMP ECHO 
REPLYģ˵ĿǴڵģԸüһĹ 

1.11 ι 

һЩIPҪзƬͣΪӭ·MTU䵥ԪҪ󡣱磬һ4500ֽڵIPMTUΪ1500·ϴʱ򣬾ҪֳIP 

IPͷһƫֶκһƬ־MFMF־Ϊ1IPһIPƬϣƫֶָƬIPеλá磬һ4500ֽڵIPзƬMTUΪ1500ƬƫֶεֵΪ015003000ն˾ͿԸЩϢɹװIP 


һߴƫֶóɲȷֵܳغϻϿͿܵĿϵͳ磬ƫΪ013003000νι 


1.12 Դ·ѡIP 

ΪʵһЩӹܣIPЭ淶IPͷѡֶΣֶοѡЯһЩݣָм豸·ĿЩIPĽжĴ 


Դ·ѡһоͿԿԴ·ѡĿģָм豸·תݱĵģȷָ˱ĵĴ·磬һIPȷľ̨·R1R2R3Դ·ѡȷָ·Ľӿڵַ̨·ϵ·ɱΣIPľͻξR1R2R3ЩԴ·ѡIPڴĹУԴַϸı䣬ĿַҲϸı䣬ˣͨʵԴ·ѡ߱αһЩϷIPַɻ硣 


1.13 ¼·ѡIP 

¼·ѡҲһIPѡЯ˸ѡIPģÿһ̨··ԼĽӿڵַѡֶ档ЩڵĿĵصʱѡ¼˸ñľ· 

ͨıĿԺ׵жϸñľ·Ӷʹ߿Ժ׵ѰеĹ㡣 

1.14 δ֪ЭֶεIP 

IPͷУһЭֶΣֶָ˸IPĳ˺Э 
磬ֵֶΪ1IPĳICMPģΪ6TCPȵȡĿǰ£ѾĸֶεֵС100ģˣһ100ЭֶεIPģܾǲϷģıĿܶһЩϵͳЭջƻ 



1.15 IPַƭ 

һ£·תĵʱֻݱĵĿĵַ·ɱܱĵԴַʲôˣ 
һΣգһһ̨ĿһģѱĵԴַдΪһIPַڵĿĿ֪ĵӦνIPַƭ 


ȽSQL Server没ǲԭòΪһߣһ̨SQL 
ServerķһUDPģñĵԴַдΪһ̨SQL ServerSQL Server 
2000Ժ汾ķSQL Server һ©ͿʹøUDP̨֮յ·̱ 

1.16 WinNuke 

NetBIOSΪһֻԴʽӿڣ㷺Ӧļӡ̼ͨţIPCԼͬϵͳ֮ݽһ£NetBIOSLLC2·Э֮ϵģһֻ鲥ʽӿڡΪTCP/IPЭջʵNetBIOSRFC涨һϵн׼ԼõTCP/UDP˿ڣ 


139NetBIOSỰTCP˿ڣ 
137NetBIOSַUDP˿ڣ 
136NetBIOSݱUDP˿ڡ 

WINDOWSϵͳڰ汾WIN95/98/NTļȣǽNetBIOS֮ϵģˣЩϵͳ139˿ڣ°汾WINDOWS 
2000/XP/2003ȣΪ˼ݣҲʵNetBIOS over TCP/IPܣ139˿ڣ 

WinNukeWINDOWSϵͳһ©139˿ڷһЩЯTCP⣨OOBݱģЩЯOOBݱĲͬǣֶָݵʵλòغϣWINDOWSϵͳڴЩݵʱ򣬾ͻ 


1.17 Land 

LANDTCPӽֹ̣ͨһĿһTCP SYNģӽģɶĿĹTCP 
SYNĲͬǣLANDĵԴIPַĿIPַͬģĿIPַĿյSYNĺ󣬾ͻñĵԴַһACKģһTCPӿƽṹTCBñĵԴַԼˣACKľͷԼ߷㹻SYNģĿTCBܻľղҲһDOS 


1.18 Script/ActiveX 

ScriptһִֿеĽűһһЩűдɣ糣JAVA SCRIPTVB 
SCRIPTȡЩűִеʱҪһרŵĽ룬ɼָڱؼСֽűĺôǣͨĳдɴĹܡ 


SCRIPTһҪӦþǶWEBҳ棬ִһЩ̬WEBҳԣHTML޷ɵĹܣ籾ؼ㣬ݿѯ޸ģԼϵͳϢȡȡЩűڴǿܵͬʱҲΪṩ˷Ĺ;дһЩϵͳƻSCRIPTȻǶWEBҳУһЩҳ汻صأԵǰûȨִЩűǰûеκȨޣSCRIPTʹãЩSCRIPTƻ̶жǿνSCRIPT 



ActiveXһֿؼǽMICROSOFTģͣCOM֮ϵģCOM򼸺WindowsϵͳĻṹԼ򵥵⣬ЩؼɷԹɵģһЩһЩضݡֿؼԱӦóأȻеķԣһЩضĹܡ˵COMṩһֶƵļģͣνƼݣָǳģõı뻷ϵͳûйϵҪעǣֶؼԼִУΪûԼĽ̿ռ䣬ֻ̼أеķԣʱЩؼڼؽ̵Ľ̿ռУϵͳĿɼģ飬DLL⡣ 


ActiveXؼǶWEBҳ棬Щҳ浽غӦҲǶеActiveXؼЩؼڱ̿ռУActiveXռûԼĽ̿ռ䣬ֻ̼زãˣǰûȨжActiveXƻԱжһĹ߱дһжActiveXؼȻǶWEBҳУһûغִУƻǷǳġνActiveX 


1.19 Smurf 

ICMP ECHOϣһ̨յһĺ󣬻ĵԴַӦһICMP ECHO 
REPLYһ£ǲECHOԴַģˣһĹ߰ECHOԴַΪһ㲥ַڻָREPLYʱ򣬾ͻԹ㲥ַΪĿĵַеļ봦Щ㲥ġ߷͵ECHO 
㹻࣬REPLY㲥ľͿܰûνsmurf 

˰ECHOĵԴַΪ㲥ַ⣬߻ܰԴַΪһ㲥ַڵļͿӰ졣 

1.20 նˣVTYľ 

һ豸Ĺ·ȡЩ豸Ϊ˱Զ̹һһЩTELNETû棬ûͨTELNET豸ϣЩ豸й 


һ£Щ豸TELNETûƵģ磬510ȡһͬʱͬһ̨豸510TELNETӣЩ豸Զ̹㱻ռϷûٶЩ豸Զ̹ΪTELNETԴռöʧܡ 



1.21 ·Э鹥 

豸֮Ϊ˽·ϢһЩ̬·Э飬Щ·Э·ɱĽ·Ϣķַȹܡ·ЭRIPOSPFIS-ISBGPȡЩ·Эڷ·ϢʹݵͬʱҲһЩȱݣ·ЭЩȨޣй豸·ɱңԵжϣ豸Դģ豸̱ 


оһЩ·ЭĹʽԭ 

1.21.1 RIPЭĹ 

RIP·ϢЭ飬ͨԣһΪ30S·ɸ±ά·ɱģһ̨RIP·Э·һӿϽյһ·ɸ±ģͻа·ϢԼ·ɱȽϣ·ΪЩ·ϢԼյҪЧЩ·ϢԼ·ɱС 


һһ̨RIPЭ·ΪĴƻԵ·ɸ±ģͺ׵İ··ɱңӶжϡ 

RIP·Э··ɸϢHMAC֤ɴӺ̶ܴϱֹ 

1.21.2 OSPF·ЭĹ 

OSPF·ȣһӦù㷺·״̬·Э顣·Э·״̬㷨ٶȿ죬ƽȣž·ŵ㣬ʮʺϴ͵ļʹáOSPF·Эͨڽӹϵ·ı·ϢȻγһ·״̬ݿ⣬Ըݿ⣬·ͿԺ׵ļ·ɱ 


Կһðһ̨Ϸ·еһ̨·ڽӹϵ򹥻··״̬㲥LSA·״̬ݿݵԪͻ·γɴ˽ṹӶ·ɱң̱ 


ǰ汾WINDOWS ϵͳWIN 2K/XPȣʵOSPF·Э鹦ܣһ߿Ժ׵ЩϵͳԴ·ɹģй 

RIPƣOSPF˱֤ܣHMAC֤ԴӺ̶ܴϱֹ 

1.21.3 IS-IS·ЭĹ 

IS-IS·Э飬мϵͳмϵͳISOISOCLNS·ɵһЭ飬ЭҲǻ·״̬ģԭOSPFơIS-IS·Э龭 
չIPУIPĽѡ··ЭҲͨھӹϵռ··״ֶ̬·״̬ݿͬġЭھӹϵOSPF򵥣ҲʡOSPFеһЩԣʹЭˣԸǿ 


ԸЭĹOSPFƣͨһģиЭ·ھӹϵȻ̸··״̬ݵԪLSPԵ··״̬ݿⲻһ£Ϊ··״̬ݿⶼҪͬͬ״̬Ӷ·ɱʵʹжϡ 


OSPFƣи·Э·IS-ISЭ鵥ԪPDUHMAC֤ܣԴӺ̶ܴϱֹ 


1.22 豸תĹ 

Ϊ˺޵תݣ豸һ㶼һЩĴMACַARP·ɱתԼһЩڸ౨ͷֶεı񣬱㽻ĿȡЩṹ洢豸صڴУоƬƬڴУޡһͨͺʵݱʹ豸Ĵ񣬾ͻʹ豸Ĵ洢ṹľӶתݻ 


Լֳı乥ԭ 

1.22.1 MACַĹ 

MACַһ̫ϣ̫ͨյ֡ĿMACַ鱾صMACַȻʵת 

ЩMACַһͨѧϰȡģڽյһ֡һѧϰḶ́ùģ 

a) ȡ֡ԴMACַͽյ֡Ķ˿ںţ 
MACַMACַǷڣԼӦĶ˿Ƿϣ 
c) MACַڱMACַвڣ򴴽һMACַ 
d) ڣӦĳ˿ڸյ֡Ķ˿ڲ¸ñ 
e) ڣҶ˿ڷϣһ 

̿Կһһ̨ʹԴMACַͬ֡ýͿܰԼصMACַѧһMACַ򽻻ͲܼѧϰȷMACǿܲݣʹ 


һЩԴMACַͬ֡Ƿǳ׵顣 

1.22.2 ARPĹ 

ARPIPַMACַӳϵκʵIPЭջ豸һ¶ͨñάIPַMACַĶӦϵΪ˱ARPɵĹ㲥ݱĶɳARPĽһͨ; 


1 
һ̨һ̨֪MACַļͨţüARPͨARPЭ齨ǰ̨λͬһIPϣ 

2 һ̨յһ̨ARPڱؽIPַMACַĶӦ 

ˣһͨ任ͬIPַMACַͬһ̨豸㽻ʹARP򱻹豸ܻΪARP 

ARPһܵĹ󵼼ȷARPARPЭ飬һ̨յһARPģ£üARPеԴIPַԴMACַԼARP棺 


1 ARPIPַԼصARPУ 
2 ĿIPַԼġ 

Ծһ˵̨̣ABCBѾȷACARPAǹߣʱAһARPģ죺 


1 ԴIPַCIPַԴMACַAMACַ 
2 ĿIPַAIPַ 

BյARPĺARPǹ㲥ģ豸յBARPѾԼĻУMACַյԴMACַǸARPЭ飬ʹARPԴMACַAMACַԼARP 


BARPоʹĴARPCIPַAMACַӦĽǣBCݶAյ 

1.22.3 ĿĹ 

е豸Ϊ˼ӿתЧʣν档νΪһ̨һ̵һ̨һ֮TCP/IPЭϣɣԴIPַĿIPַЭţԴ˿ںţĿĶ˿ںţԪ鹲ͬȷݱġ 


һһɸԪΪÿ豸յһIPĺ󣬻ȷIPͷѶӦԪȡһHASH㣬Ȼѯ棬ҳɹݲҵĽдʧܣ½һ·ɱ·ɱѯ棬ȻݱĽתתĿǰǴ󲢲Ҫ 


Կһ߷ԴIPַĿIPַ仯ݱģͿܵ豸ĿΪͬԴIPַͲͬĿIPַӦͬܵ 

شߣ zhoujie8077 -  ļ  5-14 23:01
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